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This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +=================================== +Traffic Generator Integration Guide +=================================== + +Intended Audience +================= + +This document is intended to aid those who want to integrate new traffic +generator into the vsperf code. It is expected, that reader has already +read generic part of :ref:`vsperf-design`. + +Let us create a sample traffic generator called **sample_tg**, step by step. + +Step 1 - create a directory +=========================== + +Implementation of trafficgens is located at tools/pkt_gen/ directory, +where every implementation has its dedicated sub-directory. It is +required to create a new directory for new traffic generator +implementations. + +E.g. + +.. code-block:: console + + $ mkdir tools/pkt_gen/sample_tg + +Step 2 - create a trafficgen module +=================================== + +Every trafficgen class must inherit from generic **ITrafficGenerator** +interface class. VSPERF during its initialization scans content of pkt_gen +directory for all python modules, that inherit from **ITrafficGenerator**. These +modules are automatically added into the list of supported traffic generators. + +Example: + +Let us create a draft of tools/pkt_gen/sample_tg/sample_tg.py module. + +.. code-block:: python + + from tools.pkt_gen import trafficgen + + class SampleTG(trafficgen.ITrafficGenerator): + """ + A sample traffic generator implementation + """ + pass + +VSPERF is immediately aware of the new class: + +.. code-block:: console + + $ ./vsperf --list-trafficgen + +Output should look like: + +.. code-block:: console + + Classes derived from: ITrafficGenerator + ====== + + * Ixia: A wrapper around the IXIA traffic generator. + + * IxNet: A wrapper around IXIA IxNetwork applications. + + * Dummy: A dummy traffic generator whose data is generated by the user. + + * SampleTG: A sample traffic generator implementation + + * TestCenter: Spirent TestCenter + + +Step 3 - configuration +====================== + +All configuration values, required for correct traffic generator function, are passed +from VSPERF to the traffic generator in a dictionary. Default values shared among +all traffic generators are defined in **conf/03_traffic.conf** within **TRAFFIC** +dictionary. Default values are loaded by **ITrafficGenerator** interface class +automatically, so it is not needed to load them explicitly. In case that there are +any traffic generator specific default values, then they should be set within class +specific **__init__** function. + +VSPERF passes test specific configuration within **traffic** dictionary to every +start and send function. So implementation of these functions must ensure, +that default values are updated with the testcase specific values. Proper merge +of values is assured by call of **merge_spec** function from **conf** module. + +Example of **merge_spec** usage in **tools/pkt_gen/sample_tg/sample_tg.py** module: + +.. code-block:: python + + from conf import merge_spec + + def start_rfc2544_throughput(self, traffic=None, duration=30): + self._params = {} + self._params['traffic'] = self.traffic_defaults.copy() + if traffic: + self._params['traffic'] = merge_spec( + self._params['traffic'], traffic) + + +Step 4 - generic functions +========================== + +There are some generic functions, which every traffic generator should provide. +Although these functions are mainly optional, at least empty implementation must +be provided. This is required, so that developer is explicitly aware of these +functions. + +The **connect** function is called from the traffic generator controller from its +**__enter__** method. This function should assure proper connection initialization +between DUT and traffic generator. In case, that such implementation is not needed, +empty implementation is required. + +The **disconnect** function should perform clean up of any connection specific +actions called from the **connect** function. + +Example in **tools/pkt_gen/sample_tg/sample_tg.py** module: + +.. code-block:: python + + def connect(self): + pass + + def disconnect(self): + pass + +.. _step-5-supported-traffic-types: + +Step 5 - supported traffic types +================================ + +Currently VSPERF supports three different types of tests for traffic generators, +these are identified in vsperf through the traffic type, which include: + + * RFC2544 throughput - Send fixed size packets at different rates, using + traffic configuration, until minimum rate at which no packet loss is + detected is found. Methods with its implementation have suffix + **_rfc2544_throughput**. + + * RFC2544 back2back - Send fixed size packets at a fixed rate, using traffic + configuration, for specified time interval. Methods with its + implementation have suffix **_rfc2544_back2back**. + + * continuous flow - Send fixed size packets at given framerate, using traffic + configuration, for specified time interval. Methods with its + implementation have suffix **_cont_traffic**. + +In general, both synchronous and asynchronous interfaces must be implemented +for each traffic type. Synchronous functions start with prefix **send_**. +Asynchronous with prefixes **start_** and **wait_** in case of throughput +and back2back and **start_** and **stop_** in case of continuous traffic type. + +Example of synchronous interfaces: + +.. code-block:: python + + def send_rfc2544_throughput(self, traffic=None, tests=1, duration=20, + lossrate=0.0): + def send_rfc2544_back2back(self, traffic=None, tests=1, duration=20, + lossrate=0.0): + def send_cont_traffic(self, traffic=None, duration=20): + +Example of asynchronous interfaces: + +.. code-block:: python + + def start_rfc2544_throughput(self, traffic=None, tests=1, duration=20, + lossrate=0.0): + def wait_rfc2544_throughput(self): + + def start_rfc2544_back2back(self, traffic=None, tests=1, duration=20, + lossrate=0.0): + def wait_rfc2544_back2back(self): + + def start_cont_traffic(self, traffic=None, duration=20): + def stop_cont_traffic(self): + +Description of parameters used by **send**, **start**, **wait** and **stop** +functions: + + * param **traffic**: A dictionary with detailed definition of traffic + pattern. It contains following parameters to be implemented by + traffic generator. + + Note: Traffic dictionary has also virtual switch related parameters, + which are not listed below. + + Note: There are parameters specific to testing of tunnelling protocols, + which are discussed in detail at :ref:`integration-tests` userguide. + + * param **traffic_type**: One of the supported traffic types, + e.g. **rfc2544_throughput**, **rfc2544_continuous** + or **rfc2544_back2back**. + * param **frame_rate**: Defines desired percentage of frame + rate used during continuous stream tests. + * param **bidir**: Specifies if generated traffic will be full-duplex + (true) or half-duplex (false). + * param **multistream**: Defines number of flows simulated by traffic + generator. Value 0 disables MultiStream feature. + * param **stream_type**: Stream Type defines ISO OSI network layer + used for simulation of multiple streams. + Supported values: + + * **L2** - iteration of destination MAC address + * **L3** - iteration of destination IP address + * **L4** - iteration of destination port of selected transport protocol + + * param **l2**: A dictionary with data link layer details, e.g. **srcmac**, + **dstmac** and **framesize**. + * param **l3**: A dictionary with network layer details, e.g. **srcip**, + **dstip** and **proto**. + * param **l3**: A dictionary with transport layer details, e.g. **srcport**, + **dstport**. + * param **vlan**: A dictionary with vlan specific parameters, + e.g. **priority**, **cfi**, **id** and vlan on/off switch **enabled**. + + * param **tests**: Number of times the test is executed. + * param **duration**: Duration of continuous test or per iteration duration + in case of RFC2544 throughput or back2back traffic types. + * param **lossrate**: Acceptable lossrate percentage. + +Step 6 - passing back results +============================= + +It is expected that methods **send**, **wait** and **stop** will return +values measured by traffic generator within a dictionary. Dictionary keys +are defined in **ResultsConstants** implemented in +**core/results/results_constants.py**. Please check sections for RFC2544 +Throughput & Continuous and for Back2Back. The same key names should +be used by all traffic generator implementations. + diff --git a/docs/testing/developer/design/vsperf.png b/docs/testing/developer/design/vsperf.png Binary files differnew file mode 100644 index 00000000..4af2ac62 --- /dev/null +++ b/docs/testing/developer/design/vsperf.png diff --git a/docs/testing/developer/design/vswitchperf_design.rst b/docs/testing/developer/design/vswitchperf_design.rst new file mode 100644 index 00000000..da7ec6fd --- /dev/null +++ b/docs/testing/developer/design/vswitchperf_design.rst @@ -0,0 +1,870 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +.. _vsperf-design: + +====================== +VSPERF Design Document +====================== + +Intended Audience +================= + +This document is intended to aid those who want to modify the vsperf code. Or +to extend it - for example to add support for new traffic generators, +deployment scenarios and so on. + +Usage +===== + +Example Connectivity to DUT +--------------------------- + +Establish connectivity to the VSPERF DUT Linux host, such as the DUT in Pod 3, +by following the steps in `Testbed POD3 +<https://wiki.opnfv.org/get_started/pod_3_-_characterize_vswitch_performance>`__ + +The steps cover booking the DUT and establishing the VSPERF environment. + +Example Command Lines +--------------------- + +List all the cli options: + +.. code-block:: console + + $ ./vsperf -h + +Run all tests that have ``tput`` in their name - ``phy2phy_tput``, ``pvp_tput`` etc.: + +.. code-block:: console + + $ ./vsperf --tests 'tput' + +As above but override default configuration with settings in '10_custom.conf'. +This is useful as modifying configuration directly in the configuration files +in ``conf/NN_*.py`` shows up as changes under git source control: + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf --tests 'tput' + +Override specific test parameters. Useful for shortening the duration of tests +for development purposes: + +.. code-block:: console + + $ ./vsperf --test-params 'TRAFFICGEN_DURATION=10;TRAFFICGEN_RFC2544_TESTS=1;' \ + 'TRAFFICGEN_PKT_SIZES=(64,)' pvp_tput + +Typical Test Sequence +===================== + +This is a typical flow of control for a test. + +.. image:: vsperf.png + +.. _design-configuration: + +Configuration +============= + +The conf package contains the configuration files (``*.conf``) for all system +components, it also provides a ``settings`` object that exposes all of these +settings. + +Settings are not passed from component to component. Rather they are available +globally to all components once they import the conf package. + +.. code-block:: python + + from conf import settings + ... + log_file = settings.getValue('LOG_FILE_DEFAULT') + +Settings files (``*.conf``) are valid python code so can be set to complex +types such as lists and dictionaries as well as scalar types: + +.. code-block:: python + + first_packet_size = settings.getValue('PACKET_SIZE_LIST')[0] + +Configuration Procedure and Precedence +-------------------------------------- + +Configuration files follow a strict naming convention that allows them to be +processed in a specific order. All the .conf files are named ``NN_name.conf``, +where NN is a decimal number. The files are processed in order from 00_name.conf +to 99_name.conf so that if the name setting is given in both a lower and higher +numbered conf file then the higher numbered file is the effective setting as it +is processed after the setting in the lower numbered file. + +The values in the file specified by ``--conf-file`` takes precedence over all +the other configuration files and does not have to follow the naming +convention. + +.. _paths-documentation: + +Configuration of PATHS dictionary +--------------------------------- + +VSPERF uses external tools like Open vSwitch and Qemu for execution of testcases. These +tools may be downloaded and built automatically (see :ref:`vsperf-installation-script`) +or installed manually by user from binary packages. It is also possible to use a combination +of both approaches, but it is essential to correctly set paths to all required tools. +These paths are stored within a PATHS dictionary, which is evaluated before execution +of each testcase, in order to setup testcase specific environment. Values selected for testcase +execution are internally stored inside TOOLS dictionary, which is used by VSPERF to execute +external tools, load kernel modules, etc. + +The default configuration of PATHS dictionary is spread among three different configuration files +to follow logical grouping of configuration options. Basic description of PATHS dictionary +is placed inside ``conf/00_common.conf``. The configuration specific to DPDK and vswitches +is located at ``conf/02_vswitch.conf``. The last part related to the Qemu is defined inside +``conf/04_vnf.conf``. Default configuration values can be used in case, that all required +tools were downloaded and built automatically by vsperf itself. In case, that some of +tools were installed manually from binary packages, then it will be necessary to modify +the content of PATHS dictionary accordingly. + +Dictionary has a specific section of configuration options for every tool type, it means: + + * ``PATHS['vswitch']`` - contains a separete dictionary for each of vswitches supported by VSPEF + + Example: + + .. code-block:: python + + PATHS['vswitch'] = { + 'OvsDpdkVhost': { ... }, + 'OvsVanilla' : { ... }, + ... + } + + * ``PATHS['dpdk']`` - contains paths to the dpdk sources, kernel modules and tools (e.g. testpmd) + + Example: + + .. code-block:: python + + PATHS['dpdk'] = { + 'type' : 'src', + 'src': { + 'path': os.path.join(ROOT_DIR, 'src/dpdk/dpdk/'), + 'modules' : ['uio', os.path.join(RTE_TARGET, 'kmod/igb_uio.ko')], + 'bind-tool': 'tools/dpdk*bind.py', + 'testpmd': os.path.join(RTE_TARGET, 'app', 'testpmd'), + }, + ... + } + + * ``PATHS['qemu']`` - contains paths to the qemu sources and executable file + + Example: + + .. code-block:: python + + PATHS['qemu'] = { + 'type' : 'bin', + 'bin': { + 'qemu-system': 'qemu-system-x86_64' + }, + ... + } + +Every section specific to the particular vswitch, dpdk or qemu may contain following types +of configuration options: + + * option ``type`` - is a string, which defines the type of configured paths ('src' or 'bin') + to be selected for a given section: + + * value ``src`` means, that VSPERF will use vswitch, DPDK or QEMU built from sources + e.g. by execution of ``systems/build_base_machine.sh`` script during VSPERF + installation + + * value ``bin`` means, that VSPERF will use vswitch, DPDK or QEMU binaries installed + directly in the operating system, e.g. via OS specific packaging system + + * option ``path`` - is a string with a valid system path; Its content is checked for + existence, prefixed with section name and stored into TOOLS for later use + e.g. ``TOOLS['dpdk_src']`` or ``TOOLS['vswitch_src']`` + + * option ``modules`` - is list of strings with names of kernel modules; Every module name + from given list is checked for a '.ko' suffix. In case that it matches and if it is not + an absolute path to the module, then module name is prefixed with value of ``path`` + option defined for the same section + + Example: + + .. code-block:: python + + """ + snippet of PATHS definition from the configuration file: + """ + PATHS['vswitch'] = { + 'OvsVanilla' = { + 'type' : 'src', + 'src': { + 'path': '/tmp/vsperf/src_vanilla/ovs/ovs/', + 'modules' : ['datapath/linux/openvswitch.ko'], + ... + }, + ... + } + ... + } + + """ + Final content of TOOLS dictionary used during runtime: + """ + TOOLS['vswitch_modules'] = ['/tmp/vsperf/src_vanilla/ovs/ovs/datapath/linux/openvswitch.ko'] + + * all other options are strings with names and paths to specific tools; If a given string + contains a relative path and option ``path`` is defined for a given section, then string + content will be prefixed with content of the ``path``. Otherwise the name of the tool will be + searched within standard system directories. In case that filename contains OS specific + wildcards, then they will be expanded to the real path. At the end of the processing, every + absolute path will be checked for its existence. In case that temporary path (i.e. path with + a ``_tmp`` suffix) does not exist, then log will be written and vsperf will continue. If any + other path will not exist, then vsperf execution will be terminated with a runtime error. + + Example: + + .. code-block:: python + + """ + snippet of PATHS definition from the configuration file: + """ + PATHS['vswitch'] = { + 'OvsDpdkVhost': { + 'type' : 'src', + 'src': { + 'path': '/tmp/vsperf/src_vanilla/ovs/ovs/', + 'ovs-vswitchd': 'vswitchd/ovs-vswitchd', + 'ovsdb-server': 'ovsdb/ovsdb-server', + ... + } + ... + } + ... + } + + """ + Final content of TOOLS dictionary used during runtime: + """ + TOOLS['ovs-vswitchd'] = '/tmp/vsperf/src_vanilla/ovs/ovs/vswitchd/ovs-vswitchd' + TOOLS['ovsdb-server'] = '/tmp/vsperf/src_vanilla/ovs/ovs/ovsdb/ovsdb-server' + +Note: In case that ``bin`` type is set for DPDK, then ``TOOLS['dpdk_src']`` will be set to +the value of ``PATHS['dpdk']['src']['path']``. The reason is, that VSPERF uses downloaded +DPDK sources to copy DPDK and testpmd into the GUEST, where testpmd is built. In case, +that DPDK sources are not available, then vsperf will continue with test execution, +but testpmd can't be used as a guest loopback. This is useful in case, that other guest +loopback applications (e.g. buildin or l2fwd) are used. + +Note: In case of RHEL 7.3 OS usage, binary package configuration is required +for Vanilla OVS tests. With the installation of a supported rpm for OVS there is +a section in the ``conf\10_custom.conf`` file that can be used. + +.. _configuration-of-traffic-dictionary: + +Configuration of TRAFFIC dictionary +----------------------------------- + +TRAFFIC dictionary is used for configuration of traffic generator. Default values +can be found in configuration file ``conf/03_traffic.conf``. These default values +can be modified by (first option has the highest priorty): + + 1. ``Parameters`` section of testcase defintion + 2. command line options specified by ``--test-params`` argument + 3. custom configuration file + +It is to note, that in case of option 1 and 2, it is possible to specify only +values, which should be changed. In case of custom configuration file, it is +required to specify whole ``TRAFFIC`` dictionary with its all values or explicitly +call and update() method of ``TRAFFIC`` dictionary. + +Detailed description of ``TRAFFIC`` dictionary items follows: + +.. code-block:: console + + 'traffic_type' - One of the supported traffic types. + E.g. rfc2544_throughput, rfc2544_back2back + or rfc2544_continuous + Data type: str + Default value: "rfc2544_throughput". + 'bidir' - Specifies if generated traffic will be full-duplex (True) + or half-duplex (False) + Data type: str + Supported values: "True", "False" + Default value: "False". + 'frame_rate' - Defines desired percentage of frame rate used during + continuous stream tests. + Data type: int + Default value: 100. + 'multistream' - Defines number of flows simulated by traffic generator. + Value 0 disables multistream feature + Data type: int + Supported values: 0-65535 + Default value: 0. + 'stream_type' - Stream type is an extension of the "multistream" feature. + If multistream is disabled, then stream type will be + ignored. Stream type defines ISO OSI network layer used + for simulation of multiple streams. + Data type: str + Supported values: + "L2" - iteration of destination MAC address + "L3" - iteration of destination IP address + "L4" - iteration of destination port + of selected transport protocol + Default value: "L4". + 'pre_installed_flows' + - Pre-installed flows is an extension of the "multistream" + feature. If enabled, it will implicitly insert a flow + for each stream. If multistream is disabled, then + pre-installed flows will be ignored. + Note: It is supported only for p2p deployment scenario. + Data type: str + Supported values: + "Yes" - flows will be inserted into OVS + "No" - flows won't be inserted into OVS + Default value: "No". + 'flow_type' - Defines flows complexity. + Data type: str + Supported values: + "port" - flow is defined by ingress ports + "IP" - flow is defined by ingress ports + and src and dst IP addresses + Default value: "port" + 'l2' - A dictionary with l2 network layer details. Supported + values are: + 'srcmac' - Specifies source MAC address filled by traffic generator. + NOTE: It can be modified by vsperf in some scenarios. + Data type: str + Default value: "00:00:00:00:00:00". + 'dstmac' - Specifies destination MAC address filled by traffic generator. + NOTE: It can be modified by vsperf in some scenarios. + Data type: str + Default value: "00:00:00:00:00:00". + 'framesize' - Specifies default frame size. This value should not be + changed directly. It will be overridden during testcase + execution by values specified by list TRAFFICGEN_PKT_SIZES. + Data type: int + Default value: 64 + 'l3' - A dictionary with l3 network layer details. Supported + values are: + 'srcip' - Specifies source MAC address filled by traffic generator. + NOTE: It can be modified by vsperf in some scenarios. + Data type: str + Default value: "1.1.1.1". + 'dstip' - Specifies destination MAC address filled by traffic generator. + NOTE: It can be modified by vsperf in some scenarios. + Data type: str + Default value: "90.90.90.90". + 'proto' - Specifies deflaut protocol type. + Please check particular traffic generator implementation + for supported protocol types. + Data type: str + Default value: "udp". + 'l4' - A dictionary with l4 network layer details. Supported + values are: + 'srcport' - Specifies source port of selected transport protocol. + NOTE: It can be modified by vsperf in some scenarios. + Data type: int + Default value: 3000 + 'dstport' - Specifies destination port of selected transport protocol. + NOTE: It can be modified by vsperf in some scenarios. + Data type: int + Default value: 3001 + 'vlan' - A dictionary with vlan encapsulation details. Supported + values are: + 'enabled' - Specifies if vlan encapsulation should be enabled or + disabled. + Data type: bool + Default value: False + 'id' - Specifies vlan id. + Data type: int (NOTE: must fit to 12 bits) + Default value: 0 + 'priority' - Specifies a vlan priority (PCP header field). + Data type: int (NOTE: must fit to 3 bits) + Default value: 0 + 'cfi' - Specifies if frames can or cannot be dropped during + congestion (DEI header field). + Data type: int (NOTE: must fit to 1 bit) + Default value: 0 + +.. _configuration-of-guest-options: + +Configuration of GUEST options +------------------------------ + +VSPERF is able to setup scenarios involving a number of VMs in series or in parallel. +All configuration options related to a particular VM instance are defined as +lists and prefixed with ``GUEST_`` label. It is essential, that there is enough +items in all ``GUEST_`` options to cover all VM instances involved in the test. +In case there is not enough items, then VSPERF will use the first item of +particular ``GUEST_`` option to expand the list to required length. + +Example of option expansion for 4 VMs: + + .. code-block:: python + + """ + Original values: + """ + GUEST_SMP = ['2'] + GUEST_MEMORY = ['2048', '4096'] + + """ + Values after automatic expansion: + """ + GUEST_SMP = ['2', '2', '2', '2'] + GUEST_MEMORY = ['2048', '4096', '2048', '2048'] + + +First option can contain macros starting with ``#`` to generate VM specific values. +These macros can be used only for options of ``list`` or ``str`` types with ``GUEST_`` +prefix. + +Example of macros and their expnasion for 2 VMs: + + .. code-block:: python + + """ + Original values: + """ + GUEST_SHARE_DIR = ['/tmp/qemu#VMINDEX_share'] + GUEST_BRIDGE_IP = ['#IP(1.1.1.5)/16'] + + """ + Values after automatic expansion: + """ + GUEST_SHARE_DIR = ['/tmp/qemu0_share', '/tmp/qemu1_share'] + GUEST_BRIDGE_IP = ['1.1.1.5/16', '1.1.1.6/16'] + +Additional examples are available at ``04_vnf.conf``. + +Note: In case, that macro is detected in the first item of the list, then +all other items are ignored and list content is created automatically. + +Multiple macros can be used inside one configuration option definition, but macros +cannot be used inside other macros. The only exception is macro ``#VMINDEX``, which +is expanded first and thus it can be used inside other macros. + +Following macros are supported: + + * ``#VMINDEX`` - it is replaced by index of VM being executed; This macro + is expanded first, so it can be used inside other macros. + + Example: + + .. code-block:: python + + GUEST_SHARE_DIR = ['/tmp/qemu#VMINDEX_share'] + + * ``#MAC(mac_address[, step])`` - it will iterate given ``mac_address`` + with optional ``step``. In case that step is not defined, then it is set to 1. + It means, that first VM will use the value of ``mac_address``, second VM + value of ``mac_address`` increased by ``step``, etc. + + Example: + + .. code-block:: python + + GUEST_NICS = [[{'mac' : '#MAC(00:00:00:00:00:01,2)'}]] + + * ``#IP(ip_address[, step])`` - it will iterate given ``ip_address`` + with optional ``step``. In case that step is not defined, then it is set to 1. + It means, that first VM will use the value of ``ip_address``, second VM + value of ``ip_address`` increased by ``step``, etc. + + Example: + + .. code-block:: python + + GUEST_BRIDGE_IP = ['#IP(1.1.1.5)/16'] + + * ``#EVAL(expression)`` - it will evaluate given ``expression`` as python code; + Only simple expressions should be used. Call of the functions is not supported. + + Example: + + .. code-block:: python + + GUEST_CORE_BINDING = [('#EVAL(6+2*#VMINDEX)', '#EVAL(7+2*#VMINDEX)')] + +Other Configuration +------------------- + +``conf.settings`` also loads configuration from the command line and from the environment. + +.. _pxp-deployment: + +PXP Deployment +============== + +Every testcase uses one of the supported deployment scenarios to setup test environment. +The controller responsible for a given scenario configures flows in the vswitch to route +traffic among physical interfaces connected to the traffic generator and virtual +machines. VSPERF supports several deployments including PXP deployment, which can +setup various scenarios with multiple VMs. + +These scenarios are realized by VswitchControllerPXP class, which can configure and +execute given number of VMs in serial or parallel configurations. Every VM can be +configured with just one or an even number of interfaces. In case that VM has more than +2 interfaces, then traffic is properly routed among pairs of interfaces. + +Example of traffic routing for VM with 4 NICs in serial configuration: + +.. code-block:: console + + +------------------------------------------+ + | VM with 4 NICs | + | +---------------+ +---------------+ | + | | Application | | Application | | + | +---------------+ +---------------+ | + | ^ | ^ | | + | | v | v | + | +---------------+ +---------------+ | + | | logical ports | | logical ports | | + | | 0 1 | | 2 3 | | + +--+---------------+----+---------------+--+ + ^ : ^ : + | | | | + : v : v + +-----------+---------------+----+---------------+----------+ + | vSwitch | 0 1 | | 2 3 | | + | | logical ports | | logical ports | | + | previous +---------------+ +---------------+ next | + | VM or PHY ^ | ^ | VM or PHY| + | port -----+ +------------+ +---> port | + +-----------------------------------------------------------+ + +It is also possible to define different number of interfaces for each VM to better +simulate real scenarios. + +Example of traffic routing for 2 VMs in serial configuration, where 1st VM has +4 NICs and 2nd VM 2 NICs: + +.. code-block:: console + + +------------------------------------------+ +---------------------+ + | 1st VM with 4 NICs | | 2nd VM with 2 NICs | + | +---------------+ +---------------+ | | +---------------+ | + | | Application | | Application | | | | Application | | + | +---------------+ +---------------+ | | +---------------+ | + | ^ | ^ | | | ^ | | + | | v | v | | | v | + | +---------------+ +---------------+ | | +---------------+ | + | | logical ports | | logical ports | | | | logical ports | | + | | 0 1 | | 2 3 | | | | 0 1 | | + +--+---------------+----+---------------+--+ +--+---------------+--+ + ^ : ^ : ^ : + | | | | | | + : v : v : v + +-----------+---------------+----+---------------+-------+---------------+----------+ + | vSwitch | 0 1 | | 2 3 | | 4 5 | | + | | logical ports | | logical ports | | logical ports | | + | previous +---------------+ +---------------+ +---------------+ next | + | VM or PHY ^ | ^ | ^ | VM or PHY| + | port -----+ +------------+ +---------------+ +----> port | + +-----------------------------------------------------------------------------------+ + +The number of VMs involved in the test and the type of their connection is defined +by deployment name as follows: + + * ``pvvp[number]`` - configures scenario with VMs connected in series with + optional ``number`` of VMs. In case that ``number`` is not specified, then + 2 VMs will be used. + + Example of 2 VMs in a serial configuration: + + .. code-block:: console + + +----------------------+ +----------------------+ + | 1st VM | | 2nd VM | + | +---------------+ | | +---------------+ | + | | Application | | | | Application | | + | +---------------+ | | +---------------+ | + | ^ | | | ^ | | + | | v | | | v | + | +---------------+ | | +---------------+ | + | | logical ports | | | | logical ports | | + | | 0 1 | | | | 0 1 | | + +---+---------------+--+ +---+---------------+--+ + ^ : ^ : + | | | | + : v : v + +---+---------------+---------+---------------+--+ + | | 0 1 | | 3 4 | | + | | logical ports | vSwitch | logical ports | | + | +---------------+ +---------------+ | + | ^ | ^ | | + | | +-----------------+ v | + | +----------------------------------------+ | + | | physical ports | | + | | 0 1 | | + +---+----------------------------------------+---+ + ^ : + | | + : v + +------------------------------------------------+ + | | + | traffic generator | + | | + +------------------------------------------------+ + + * ``pvpv[number]`` - configures scenario with VMs connected in parallel with + optional ``number`` of VMs. In case that ``number`` is not specified, then + 2 VMs will be used. Multistream feature is used to route traffic to particular + VMs (or NIC pairs of every VM). It means, that VSPERF will enable multistream + feaure and sets the number of streams to the number of VMs and their NIC + pairs. Traffic will be dispatched based on Stream Type, i.e. by UDP port, + IP address or MAC address. + + Example of 2 VMs in a parallel configuration, where traffic is dispatched + based on the UDP port. + + .. code-block:: console + + +----------------------+ +----------------------+ + | 1st VM | | 2nd VM | + | +---------------+ | | +---------------+ | + | | Application | | | | Application | | + | +---------------+ | | +---------------+ | + | ^ | | | ^ | | + | | v | | | v | + | +---------------+ | | +---------------+ | + | | logical ports | | | | logical ports | | + | | 0 1 | | | | 0 1 | | + +---+---------------+--+ +---+---------------+--+ + ^ : ^ : + | | | | + : v : v + +---+---------------+---------+---------------+--+ + | | 0 1 | | 3 4 | | + | | logical ports | vSwitch | logical ports | | + | +---------------+ +---------------+ | + | ^ | ^ : | + | | ......................: : | + | UDP | UDP : | : | + | port| port: +--------------------+ : | + | 0 | 1 : | : | + | | : v v | + | +----------------------------------------+ | + | | physical ports | | + | | 0 1 | | + +---+----------------------------------------+---+ + ^ : + | | + : v + +------------------------------------------------+ + | | + | traffic generator | + | | + +------------------------------------------------+ + + +PXP deployment is backward compatible with PVP deployment, where ``pvp`` is +an alias for ``pvvp1`` and it executes just one VM. + +The number of interfaces used by VMs is defined by configuration option +``GUEST_NICS_NR``. In case that more than one pair of interfaces is defined +for VM, then: + + * for ``pvvp`` (serial) scenario every NIC pair is connected in serial + before connection to next VM is created + * for ``pvpv`` (parallel) scenario every NIC pair is directly connected + to the physical ports and unique traffic stream is assigned to it + +Examples: + + * Deployment ``pvvp10`` will start 10 VMs and connects them in series + * Deployment ``pvpv4`` will start 4 VMs and connects them in parallel + * Deployment ``pvpv1`` and GUEST_NICS_NR = [4] will start 1 VM with + 4 interfaces and every NIC pair is directly connected to the + physical ports + * Deployment ``pvvp`` and GUEST_NICS_NR = [2, 4] will start 2 VMs; + 1st VM will have 2 interfaces and 2nd VM 4 interfaces. These interfaces + will be connected in serial, i.e. traffic will flow as follows: + PHY1 -> VM1_1 -> VM1_2 -> VM2_1 -> VM2_2 -> VM2_3 -> VM2_4 -> PHY2 + +Note: In case that only 1 or more than 2 NICs are configured for VM, +then ``testpmd`` should be used as forwarding application inside the VM. +As it is able to forward traffic between multiple VM NIC pairs. + +Note: In case of ``linux_bridge``, all NICs are connected to the same +bridge inside the VM. + +VM, vSwitch, Traffic Generator Independence +=========================================== + +VSPERF supports different vSwithes, Traffic Generators, VNFs +and Forwarding Applications by using standard object-oriented polymorphism: + + * Support for vSwitches is implemented by a class inheriting from IVSwitch. + * Support for Traffic Generators is implemented by a class inheriting from + ITrafficGenerator. + * Support for VNF is implemented by a class inheriting from IVNF. + * Support for Forwarding Applications is implemented by a class inheriting + from IPktFwd. + +By dealing only with the abstract interfaces the core framework can support +many implementations of different vSwitches, Traffic Generators, VNFs +and Forwarding Applications. + +IVSwitch +-------- + +.. code-block:: python + + class IVSwitch: + start(self) + stop(self) + add_switch(switch_name) + del_switch(switch_name) + add_phy_port(switch_name) + add_vport(switch_name) + get_ports(switch_name) + del_port(switch_name, port_name) + add_flow(switch_name, flow) + del_flow(switch_name, flow=None) + +ITrafficGenerator +----------------- + +.. code-block:: python + + class ITrafficGenerator: + connect() + disconnect() + + send_burst_traffic(traffic, numpkts, time, framerate) + + send_cont_traffic(traffic, time, framerate) + start_cont_traffic(traffic, time, framerate) + stop_cont_traffic(self): + + send_rfc2544_throughput(traffic, tests, duration, lossrate) + start_rfc2544_throughput(traffic, tests, duration, lossrate) + wait_rfc2544_throughput(self) + + send_rfc2544_back2back(traffic, tests, duration, lossrate) + start_rfc2544_back2back(traffic, , tests, duration, lossrate) + wait_rfc2544_back2back() + +Note ``send_xxx()`` blocks whereas ``start_xxx()`` does not and must be followed by a subsequent call to ``wait_xxx()``. + +IVnf +---- + +.. code-block:: python + + class IVnf: + start(memory, cpus, + monitor_path, shared_path_host, + shared_path_guest, guest_prompt) + stop() + execute(command) + wait(guest_prompt) + execute_and_wait (command) + +IPktFwd +-------- + + .. code-block:: python + + class IPktFwd: + start() + stop() + + +Controllers +----------- + +Controllers are used in conjunction with abstract interfaces as way +of decoupling the control of vSwtiches, VNFs, TrafficGenerators +and Forwarding Applications from other components. + +The controlled classes provide basic primitive operations. The Controllers +sequence and co-ordinate these primitive operation in to useful actions. For +instance the vswitch_controller_p2p can be used to bring any vSwitch (that +implements the primitives defined in IVSwitch) into the configuration required +by the Phy-to-Phy Deployment Scenario. + +In order to support a new vSwitch only a new implementation of IVSwitch needs +be created for the new vSwitch to be capable of fulfilling all the Deployment +Scenarios provided for by existing or future vSwitch Controllers. + +Similarly if a new Deployment Scenario is required it only needs to be written +once as a new vSwitch Controller and it will immediately be capable of +controlling all existing and future vSwitches in to that Deployment Scenario. + +Similarly the Traffic Controllers can be used to co-ordinate basic operations +provided by implementers of ITrafficGenerator to provide useful tests. Though +traffic generators generally already implement full test cases i.e. they both +generate suitable traffic and analyse returned traffic in order to implement a +test which has typically been predefined in an RFC document. However the +Traffic Controller class allows for the possibility of further enhancement - +such as iterating over tests for various packet sizes or creating new tests. + +Traffic Controller's Role +------------------------- + +.. image:: traffic_controller.png + + +Loader & Component Factory +-------------------------- + +The working of the Loader package (which is responsible for *finding* arbitrary +classes based on configuration data) and the Component Factory which is +responsible for *choosing* the correct class for a particular situation - e.g. +Deployment Scenario can be seen in this diagram. + +.. image:: factory_and_loader.png + +Routing Tables +============== + +Vsperf uses a standard set of routing tables in order to allow tests to easily +mix and match Deployment Scenarios (PVP, P2P topology), Tuple Matching and +Frame Modification requirements. + +.. code-block:: console + + +--------------+ + | | + | Table 0 | table#0 - Match table. Flows designed to force 5 & 10 + | | tuple matches go here. + | | + +--------------+ + | + | + v + +--------------+ table#1 - Routing table. Flow entries to forward + | | packets between ports goes here. + | Table 1 | The chosen port is communicated to subsequent tables by + | | setting the metadata value to the egress port number. + | | Generally this table is set-up by by the + +--------------+ vSwitchController. + | + | + v + +--------------+ table#2 - Frame modification table. Frame modification + | | flow rules are isolated in this table so that they can + | Table 2 | be turned on or off without affecting the routing or + | | tuple-matching flow rules. This allows the frame + | | modification and tuple matching required by the tests + | | in the VSWITCH PERFORMANCE FOR TELCO NFV test + +--------------+ specification to be independent of the Deployment + | Scenario set up by the vSwitchController. + | + v + +--------------+ + | | + | Table 3 | table#3 - Egress table. Egress packets on the ports + | | setup in Table 1. + +--------------+ + + diff --git a/docs/testing/developer/requirements/LICENSE b/docs/testing/developer/requirements/LICENSE new file mode 100644 index 00000000..7bc572ce --- /dev/null +++ b/docs/testing/developer/requirements/LICENSE @@ -0,0 +1,2 @@ +This work is licensed under a Creative Commons Attribution 4.0 International License. +http://creativecommons.org/licenses/by/4.0 diff --git a/docs/testing/developer/requirements/ietf_draft/LICENSE b/docs/testing/developer/requirements/ietf_draft/LICENSE new file mode 100644 index 00000000..7fc9ae14 --- /dev/null +++ b/docs/testing/developer/requirements/ietf_draft/LICENSE @@ -0,0 +1,12 @@ +Copyright (c) 2016 IETF Trust and the persons identified as the +document authors. All rights reserved. + +This document is subject to BCP 78 and the IETF Trust's Legal +Provisions Relating to IETF Documents +(http://trustee.ietf.org/license-info) in effect on the date of +publication of this document. Please review these documents +carefully, as they describe your rights and restrictions with respect +to this document. Code Components extracted from this document must +include Simplified BSD License text as described in Section 4.e of +the Trust Legal Provisions and are provided without warranty as +described in the Simplified BSD License. diff --git a/docs/testing/developer/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-00.xml b/docs/testing/developer/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-00.xml new file mode 100644 index 00000000..2259b23c --- /dev/null +++ b/docs/testing/developer/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-00.xml @@ -0,0 +1,1016 @@ +<?xml version="1.0" encoding="US-ASCII"?> +<!DOCTYPE rfc SYSTEM "rfc2629.dtd"> +<?rfc toc="yes"?> +<?rfc tocompact="yes"?> +<?rfc tocdepth="3"?> +<?rfc tocindent="yes"?> +<?rfc symrefs="yes"?> +<?rfc sortrefs="yes"?> +<?rfc comments="yes"?> +<?rfc inline="yes"?> +<?rfc compact="yes"?> +<?rfc subcompact="no"?> +<rfc category="info" docName="draft-ietf-bmwg-vswitch-opnfv-00" + ipr="trust200902"> + <front> + <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in + OPNFV</title> + + <author fullname="Maryam Tahhan" initials="M." surname="Tahhan"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>maryam.tahhan@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>billy.o.mahony@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Al Morton" initials="A." surname="Morton"> + <organization>AT&T Labs</organization> + + <address> + <postal> + <street>200 Laurel Avenue South</street> + + <city>Middletown,</city> + + <region>NJ</region> + + <code>07748</code> + + <country>USA</country> + </postal> + + <phone>+1 732 420 1571</phone> + + <facsimile>+1 732 368 1192</facsimile> + + <email>acmorton@att.com</email> + + <uri>http://home.comcast.net/~acmacm/</uri> + </address> + </author> + + <date day="8" month="July" year="2016"/> + + <abstract> + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance "VSWITCHPERF". This project + intends to build on the current and completed work of the Benchmarking + Methodology Working Group in IETF, by referencing existing literature. + The Benchmarking Methodology Working Group has traditionally conducted + laboratory characterization of dedicated physical implementations of + internetworking functions. Therefore, this memo begins to describe the + additional considerations when virtual switches are implemented in + general-purpose hardware. The expanded tests and benchmarks are also + influenced by the OPNFV mission to support virtualization of the "telco" + infrastructure.</t> + </abstract> + + <note title="Requirements Language"> + <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", + "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this + document are to be interpreted as described in <xref + target="RFC2119">RFC 2119</xref>.</t> + + <t/> + </note> + </front> + + <middle> + <section title="Introduction"> + <t>Benchmarking Methodology Working Group (BMWG) has traditionally + conducted laboratory characterization of dedicated physical + implementations of internetworking functions. The Black-box Benchmarks + of Throughput, Latency, Forwarding Rates and others have served our + industry for many years. Now, Network Function Virtualization (NFV) has + the goal to transform how internetwork functions are implemented, and + therefore has garnered much attention.</t> + + <t>This memo summarizes the progress of the Open Platform for NFV + (OPNFV) project on virtual switch performance characterization, + "VSWITCHPERF", through the Brahmaputra (second) release <xref + target="BrahRel"/>. This project intends to build on the current and + completed work of the Benchmarking Methodology Working Group in IETF, by + referencing existing literature. For example, currently the most often + referenced RFC is <xref target="RFC2544"/> (which depends on <xref + target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is + common and strong.</t> + + <t>See + https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases + for more background, and the OPNFV website for general information: + https://www.opnfv.org/</t> + + <t>The authors note that OPNFV distinguishes itself from other open + source compute and networking projects through its emphasis on existing + "telco" services as opposed to cloud-computing. There are many ways in + which telco requirements have different emphasis on performance + dimensions when compared to cloud computing: support for and transfer of + isochronous media streams is one example.</t> + + <t>Note also that the move to NFV Infrastructure has resulted in many + new benchmarking initiatives across the industry. The authors are + currently doing their best to maintain alignment with many other + projects, and this Internet Draft is one part of the efforts. We + acknowledge the early work in <xref + target="I-D.huang-bmwg-virtual-network-performance"/>, and useful + discussion with the authors.</t> + </section> + + <section title="Scope"> + <t>The primary purpose and scope of the memo is to inform the industry + of work-in-progress that builds on the body of extensive BMWG literature + and experience, and describe the extensions needed for benchmarking + virtual switches. Inital feedback indicates that many of these + extensions may be applicable beyond the current scope (to hardware + switches in the NFV Infrastructure and to virtual routers, for example). + Additionally, this memo serves as a vehicle to include more detail and + commentary from BMWG and other Open Source communities, under BMWG's + chartered work to characterize the NFV Infrastructure (a virtual switch + is an important aspect of that infrastructure).</t> + </section> + + <section title="Benchmarking Considerations"> + <t>This section highlights some specific considerations (from <xref + target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual + switches. The OPNFV project is sharing its present view on these areas, + as they develop their specifications in the Level Test Design (LTD) + document.</t> + + <section title="Comparison with Physical Network Functions"> + <t>To compare the performance of virtual designs and implementations + with their physical counterparts, identical benchmarks are needed. + BMWG has developed specifications for many network functions this memo + re-uses existing benchmarks through references, and expands them + during development of new methods. A key configuration aspect is the + number of parallel cores required to achieve comparable performance + with a given physical device, or whether some limit of scale was + reached before the cores could achieve the comparable level.</t> + + <t>It's unlikely that the virtual switch will be the only application + running on the SUT, so CPU utilization, Cache utilization, and Memory + footprint should also be recorded for the virtual implementations of + internetworking functions.</t> + </section> + + <section title="Continued Emphasis on Black-Box Benchmarks"> + <t>External observations remain essential as the basis for Benchmarks. + Internal observations with fixed specification and interpretation will + be provided in parallel to assist the development of operations + procedures when the technology is deployed.</t> + </section> + + <section title="New Configuration Parameters"> + <t>A key consideration when conducting any sort of benchmark is trying + to ensure the consistency and repeatability of test results. When + benchmarking the performance of a vSwitch there are many factors that + can affect the consistency of results, one key factor is matching the + various hardware and software details of the SUT. This section lists + some of the many new parameters which this project believes are + critical to report in order to achieve repeatability.</t> + + <t>Hardware details including:</t> + + <t><list style="symbols"> + <t>Platform details</t> + + <t>Processor details</t> + + <t>Memory information (type and size)</t> + + <t>Number of enabled cores</t> + + <t>Number of cores used for the test</t> + + <t>Number of physical NICs, as well as their details + (manufacturer, versions, type and the PCI slot they are plugged + into)</t> + + <t>NIC interrupt configuration</t> + + <t>BIOS version, release date and any configurations that were + modified</t> + + <t>CPU microcode level</t> + + <t>Memory DIMM configurations (quad rank performance may not be + the same as dual rank) in size, freq and slot locations</t> + + <t>PCI configuration parameters (payload size, early ack + option...)</t> + + <t>Power management at all levels (ACPI sleep states, processor + package, OS...)</t> + </list>Software details including:</t> + + <t><list style="symbols"> + <t>OS parameters and behavior (text vs graphical no one typing at + the console on one system)</t> + + <t>OS version (for host and VNF)</t> + + <t>Kernel version (for host and VNF)</t> + + <t>GRUB boot parameters (for host and VNF)</t> + + <t>Hypervisor details (Type and version)</t> + + <t>Selected vSwitch, version number or commit id used</t> + + <t>vSwitch launch command line if it has been parameterised</t> + + <t>Memory allocation to the vSwitch</t> + + <t>which NUMA node it is using, and how many memory channels</t> + + <t>DPDK or any other SW dependency version number or commit id + used</t> + + <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t> + + <t>VM storage type: snapshot/independent persistent/independent + non-persistent</t> + + <t>Number of VMs</t> + + <t>Number of Virtual NICs (vNICs), versions, type and driver</t> + + <t>Number of virtual CPUs and their core affinity on the host</t> + + <t>Number vNIC interrupt configuration</t> + + <t>Thread affinitization for the applications (including the + vSwitch itself) on the host</t> + + <t>Details of Resource isolation, such as CPUs designated for + Host/Kernel (isolcpu) and CPUs designated for specific processes + (taskset). - Test duration. - Number of flows.</t> + </list></t> + + <t>Test Traffic Information:<list style="symbols"> + <t>Traffic type - UDP, TCP, IMIX / Other</t> + + <t>Packet Sizes</t> + + <t>Deployment Scenario</t> + </list></t> + + <t/> + </section> + + <section title="Flow classification"> + <t>Virtual switches group packets into flows by processing and + matching particular packet or frame header information, or by matching + packets based on the input ports. Thus a flow can be thought of a + sequence of packets that have the same set of header field values + (5-tuple) or have arrived on the same port. Performance results can + vary based on the parameters the vSwitch uses to match for a flow. The + recommended flow classification parameters for any vSwitch performance + tests are: the input port, the source IP address, the destination IP + address and the Ethernet protocol type field. It is essential to + increase the flow timeout time on a vSwitch before conducting any + performance tests that do not measure the flow setup time. Normally + the first packet of a particular stream will install the flow in the + virtual switch which adds an additional latency, subsequent packets of + the same flow are not subject to this latency if the flow is already + installed on the vSwitch.</t> + </section> + + <section title="Benchmarks using Baselines with Resource Isolation"> + <t>This outline describes measurement of baseline with isolated + resources at a high level, which is the intended approach at this + time.</t> + + <t><list style="numbers"> + <t>Baselines: <list style="symbols"> + <t>Optional: Benchmark platform forwarding capability without + a vswitch or VNF for at least 72 hours (serves as a means of + platform validation and a means to obtain the base performance + for the platform in terms of its maximum forwarding rate and + latency). <figure> + <preamble>Benchmark platform forwarding + capability</preamble> + + <artwork align="right"><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | Simple Forwarding App | | Host + | | | | | + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmark VNF forwarding capability with direct + connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72 + hours (serves as a means of VNF validation and a means to + obtain the base performance for the VNF in terms of its + maximum forwarding rate and latency). The metrics gathered + from this test will serve as a key comparison point for + vSwitch bypass technologies performance and vSwitch + performance. <figure align="right"> + <preamble>Benchmark VNF forwarding capability</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | VNF | | | + | | | | | + | +------------------------------------------+ | | + | | Passthrough/SR-IOV | | Host + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmarking with isolated resources alone, with other + resources (both HW&SW) disabled Example, vSw and VM are + SUT</t> + + <t>Benchmarking with isolated resources alone, leaving some + resources unused</t> + + <t>Benchmark with isolated resources and all resources + occupied</t> + </list></t> + + <t>Next Steps<list style="symbols"> + <t>Limited sharing</t> + + <t>Production scenarios</t> + + <t>Stressful scenarios</t> + </list></t> + </list></t> + </section> + </section> + + <section title="VSWITCHPERF Specification Summary"> + <t>The overall specification in preparation is referred to as a Level + Test Design (LTD) document, which will contain a suite of performance + tests. The base performance tests in the LTD are based on the + pre-existing specifications developed by BMWG to test the performance of + physical switches. These specifications include:</t> + + <t><list style="symbols"> + <t><xref target="RFC2544"/> Benchmarking Methodology for Network + Interconnect Devices</t> + + <t><xref target="RFC2889"/> Benchmarking Methodology for LAN + Switching</t> + + <t><xref target="RFC6201"/> Device Reset Characterization</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t>Some of the above/newer RFCs are being applied in benchmarking for + the first time, and represent a development challenge for test equipment + developers. Fortunately, many members of the testing system community + have engaged on the VSPERF project, including an open source test + system.</t> + + <t>In addition to this, the LTD also re-uses the terminology defined + by:</t> + + <t><list style="symbols"> + <t><xref target="RFC2285"/> Benchmarking Terminology for LAN + Switching Devices</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t/> + + <t>Specifications to be included in future updates of the LTD + include:<list style="symbols"> + <t><xref target="RFC3918"/> Methodology for IP Multicast + Benchmarking</t> + + <t><xref target="RFC4737"/> Packet Reordering Metrics</t> + </list></t> + + <t>As one might expect, the most fundamental internetworking + characteristics of Throughput and Latency remain important when the + switch is virtualized, and these benchmarks figure prominently in the + specification.</t> + + <t>When considering characteristics important to "telco" network + functions, we must begin to consider additional performance metrics. In + this case, the project specifications have referenced metrics from the + IETF IP Performance Metrics (IPPM) literature. This means that the <xref + target="RFC2544"/> test of Latency is replaced by measurement of a + metric derived from IPPM's <xref target="RFC2679"/>, where a set of + statistical summaries will be provided (mean, max, min, etc.). Further + metrics planned to be benchmarked include packet delay variation as + defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT + availability, DUT capacity and packet loss in long term testing at + Throughput level, where some low-level of background loss may be present + and characterized.</t> + + <t>Tests have been (or will be) designed to collect the metrics + below:</t> + + <t><list style="symbols"> + <t>Throughput Tests to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by <xref target="RFC1242"/>) without traffic loss.</t> + + <t>Packet and Frame Delay Distribution Tests to measure average, min + and max packet and frame delay for constant loads.</t> + + <t>Packet Delay Tests to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers.</t> + + <t>Scalability Tests to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic’s configuration… it has to deal with + increases.</t> + + <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the switch.</t> + + <t>Control Path and Datapath Coupling Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT (example: + delay of the initial packet of a flow).</t> + + <t>CPU and Memory Consumption Tests to understand the virtual + switch’s footprint on the system, usually conducted as + auxiliary measurements with benchmarks above. They include: CPU + utilization, Cache utilization and Memory footprint.</t> + + <t>The so-called "Soak" tests, where the selected test is conducted + over a long period of time (with an ideal duration of 24 hours, and + at least 6 hours). The purpose of soak tests is to capture transient + changes in performance which may occur due to infrequent processes + or the low probability coincidence of two or more processes. The + performance must be evaluated periodically during continuous + testing, and this results in use of <xref target="RFC2889"/> Frame + Rate metrics instead of <xref target="RFC2544"/> Throughput (which + requires stopping traffic to allow time for all traffic to exit + internal queues).</t> + </list></t> + + <t>Future/planned test specs include:<list style="symbols"> + <t>Request/Response Performance Tests (TCP, UDP) which measure the + transaction rate through the switch.</t> + + <t>Noisy Neighbour Tests, to understand the effects of resource + sharing on the performance of a virtual switch.</t> + + <t>Tests derived from examination of ETSI NFV Draft GS IFA003 + requirements <xref target="IFA003"/> on characterization of + acceleration technologies applied to vswitches.</t> + </list>The flexibility of deployment of a virtual switch within a + network means that the BMWG IETF existing literature needs to be used to + characterize the performance of a switch in various deployment + scenarios. The deployment scenarios under consideration include:</t> + + <t><figure> + <preamble>Physical port to virtual switch to physical + port</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure></t> + + <t><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ __| + ^ : + | | + : v __ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | |-----------------| v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ __| + ^ + | + : __ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ __| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ __| + : + | + v __ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ __| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | | | | ^ | | + | v | | | | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 | | | | 0 | | | + +---+---------------+--+ +---+---------------+--+__| + : ^ + | | + v : _ + +---+---------------+---------+---------------+--+ | + | | 1 | | 1 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | | ^ | | Host + | L-----------------+ | | + | | | + | vSwitch | | + +------------------------------------------------+_|]]></artwork> + </figure></t> + + <t>A set of Deployment Scenario figures is available on the VSPERF Test + Methodology Wiki page <xref target="TestTopo"/>.</t> + </section> + + <section title="3x3 Matrix Coverage"> + <t>This section organizes the many existing test specifications into the + "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>). + Because the LTD specification ID names are quite long, this section is + organized into lists for each occupied cell of the matrix (not all are + occupied, also the matrix has grown to 3x4 to accommodate scale metrics + when displaying the coverage of many metrics/benchmarks). The current + version of the LTD specification is available <xref target="LTD"/>.</t> + + <t>The tests listed below assess the activation of paths in the data + plane, rather than the control plane.</t> + + <t>A complete list of tests with short summaries is available on the + VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t> + + <section title="Speed of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressLearningRate</t> + + <t>PacketLatency.InitialPacketProcessingLatency</t> + </list></t> + </section> + + <section title="Accuracy of Activation section"> + <t><list style="symbols"> + <t>CPDP.Coupling.Flow.Addition</t> + </list></t> + </section> + + <section title="Reliability of Activation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.SystemRecoveryTime</t> + + <t>Throughput.RFC2544.ResetTime</t> + </list></t> + </section> + + <section title="Scale of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressCachingCapacity</t> + </list></t> + </section> + + <section title="Speed of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.PacketLossRate</t> + + <t>CPU.RFC2544.0PacketLoss</t> + + <t>Throughput.RFC2544.PacketLossRateFrameModification</t> + + <t>Throughput.RFC2544.BackToBackFrames</t> + + <t>Throughput.RFC2889.MaxForwardingRate</t> + + <t>Throughput.RFC2889.ForwardPressure</t> + + <t>Throughput.RFC2889.BroadcastFrameForwarding</t> + </list></t> + </section> + + <section title="Accuracy of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.ErrorFramesFiltering</t> + + <t>Throughput.RFC2544.Profile</t> + </list></t> + </section> + + <section title="Reliability of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.Soak</t> + + <t>Throughput.RFC2889.SoakFrameModification</t> + + <t>PacketDelayVariation.RFC3393.Soak</t> + </list></t> + </section> + + <section title="Scalability of Operation"> + <t><list style="symbols"> + <t>Scalability.RFC2544.0PacketLoss</t> + + <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t> + </list></t> + </section> + + <section title="Summary"> + <t><figure> + <artwork><![CDATA[|------------------------------------------------------------------------| +| | | | | | +| | SPEED | ACCURACY | RELIABILITY | SCALE | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Activation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Operation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| De-activation | | | | | +| | | | | | +|------------------------------------------------------------------------|]]></artwork> + </figure></t> + </section> + </section> + + <section title="Security Considerations"> + <t>Benchmarking activities as described in this memo are limited to + technology characterization of a Device Under Test/System Under Test + (DUT/SUT) using controlled stimuli in a laboratory environment, with + dedicated address space and the constraints specified in the sections + above.</t> + + <t>The benchmarking network topology will be an independent test setup + and MUST NOT be connected to devices that may forward the test traffic + into a production network, or misroute traffic to the test management + network.</t> + + <t>Further, benchmarking is performed on a "black-box" basis, relying + solely on measurements observable external to the DUT/SUT.</t> + + <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for + benchmarking purposes. Any implications for network security arising + from the DUT/SUT SHOULD be identical in the lab and in production + networks.</t> + </section> + + <section anchor="IANA" title="IANA Considerations"> + <t>No IANA Action is requested at this time.</t> + </section> + + <section title="Acknowledgements"> + <t>The authors appreciate and acknowledge comments from Scott Bradner, + Marius Georgescu, Ramki Krishnan, Doug Montgomery, Martin Klozik, + Christian Trautman, and others for their reviews.</t> + </section> + </middle> + + <back> + <references title="Normative References"> + <?rfc ?> + + <?rfc include="reference.RFC.2119"?> + + <?rfc ?> + + <?rfc include="reference.RFC.2330"?> + + <?rfc include='reference.RFC.2544'?> + + <?rfc include="reference.RFC.2679"?> + + <?rfc include='reference.RFC.2680'?> + + <?rfc include='reference.RFC.3393'?> + + <?rfc include='reference.RFC.3432'?> + + <?rfc include='reference.RFC.2681'?> + + <?rfc include='reference.RFC.5905'?> + + <?rfc include='reference.RFC.4689'?> + + <?rfc include='reference.RFC.4737'?> + + <?rfc include='reference.RFC.5357'?> + + <?rfc include='reference.RFC.2889'?> + + <?rfc include='reference.RFC.3918'?> + + <?rfc include='reference.RFC.6201'?> + + <?rfc include='reference.RFC.2285'?> + + <reference anchor="NFV.PER001"> + <front> + <title>Network Function Virtualization: Performance and Portability + Best Practices</title> + + <author fullname="ETSI NFV" initials="" surname=""> + <organization/> + </author> + + <date month="June" year="2014"/> + </front> + + <seriesInfo name="Group Specification" + value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/> + + <format type="PDF"/> + </reference> + </references> + + <references title="Informative References"> + <?rfc include='reference.RFC.1242'?> + + <?rfc include='reference.RFC.5481'?> + + <?rfc include='reference.RFC.6049'?> + + <?rfc include='reference.RFC.6248'?> + + <?rfc include='reference.RFC.6390'?> + + <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?> + + <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?> + + <reference anchor="TestTopo"> + <front> + <title>Test Topologies + https://wiki.opnfv.org/vsperf/test_methodology</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTDoverV"> + <front> + <title>LTD Test Spec Overview + https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTD"> + <front> + <title>LTD Test Specification + http://artifacts.opnfv.org/vswitchperf/docs/requirements/index.html</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="BrahRel"> + <front> + <title>Brahmaputra, Second OPNFV Release + https://www.opnfv.org/brahmaputra</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="IFA003"> + <front> + <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + </references> + </back> +</rfc> diff --git a/docs/testing/developer/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-01.xml b/docs/testing/developer/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-01.xml new file mode 100644 index 00000000..c8a3d99b --- /dev/null +++ b/docs/testing/developer/requirements/ietf_draft/draft-ietf-bmwg-vswitch-opnfv-01.xml @@ -0,0 +1,1027 @@ +<?xml version="1.0" encoding="US-ASCII"?> +<!DOCTYPE rfc SYSTEM "rfc2629.dtd"> +<?rfc toc="yes"?> +<?rfc tocompact="yes"?> +<?rfc tocdepth="3"?> +<?rfc tocindent="yes"?> +<?rfc symrefs="yes"?> +<?rfc sortrefs="yes"?> +<?rfc comments="yes"?> +<?rfc inline="yes"?> +<?rfc compact="yes"?> +<?rfc subcompact="no"?> +<rfc category="info" docName="draft-ietf-bmwg-vswitch-opnfv-01" + ipr="trust200902"> + <front> + <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in + OPNFV</title> + + <author fullname="Maryam Tahhan" initials="M." surname="Tahhan"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>maryam.tahhan@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>billy.o.mahony@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Al Morton" initials="A." surname="Morton"> + <organization>AT&T Labs</organization> + + <address> + <postal> + <street>200 Laurel Avenue South</street> + + <city>Middletown,</city> + + <region>NJ</region> + + <code>07748</code> + + <country>USA</country> + </postal> + + <phone>+1 732 420 1571</phone> + + <facsimile>+1 732 368 1192</facsimile> + + <email>acmorton@att.com</email> + + <uri>http://home.comcast.net/~acmacm/</uri> + </address> + </author> + + <date day="10" month="October" year="2016"/> + + <abstract> + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance "VSWITCHPERF". This project + intends to build on the current and completed work of the Benchmarking + Methodology Working Group in IETF, by referencing existing literature. + The Benchmarking Methodology Working Group has traditionally conducted + laboratory characterization of dedicated physical implementations of + internetworking functions. Therefore, this memo begins to describe the + additional considerations when virtual switches are implemented in + general-purpose hardware. The expanded tests and benchmarks are also + influenced by the OPNFV mission to support virtualization of the "telco" + infrastructure.</t> + </abstract> + + <note title="Requirements Language"> + <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", + "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this + document are to be interpreted as described in <xref + target="RFC2119">RFC 2119</xref>.</t> + + <t/> + </note> + </front> + + <middle> + <section title="Introduction"> + <t>Benchmarking Methodology Working Group (BMWG) has traditionally + conducted laboratory characterization of dedicated physical + implementations of internetworking functions. The Black-box Benchmarks + of Throughput, Latency, Forwarding Rates and others have served our + industry for many years. Now, Network Function Virtualization (NFV) has + the goal to transform how internetwork functions are implemented, and + therefore has garnered much attention.</t> + + <t>This memo summarizes the progress of the Open Platform for NFV + (OPNFV) project on virtual switch performance characterization, + "VSWITCHPERF", through the Brahmaputra (second) release <xref + target="BrahRel"/>. This project intends to build on the current and + completed work of the Benchmarking Methodology Working Group in IETF, by + referencing existing literature. For example, currently the most often + referenced RFC is <xref target="RFC2544"/> (which depends on <xref + target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is + common and strong.</t> + + <t>See + https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases + for more background, and the OPNFV website for general information: + https://www.opnfv.org/</t> + + <t>The authors note that OPNFV distinguishes itself from other open + source compute and networking projects through its emphasis on existing + "telco" services as opposed to cloud-computing. There are many ways in + which telco requirements have different emphasis on performance + dimensions when compared to cloud computing: support for and transfer of + isochronous media streams is one example.</t> + + <t>Note also that the move to NFV Infrastructure has resulted in many + new benchmarking initiatives across the industry. The authors are + currently doing their best to maintain alignment with many other + projects, and this Internet Draft is one part of the efforts. We + acknowledge the early work in <xref + target="I-D.huang-bmwg-virtual-network-performance"/>, and useful + discussion with the authors.</t> + </section> + + <section title="Scope"> + <t>The primary purpose and scope of the memo is to inform the industry + of work-in-progress that builds on the body of extensive BMWG literature + and experience, and describe the extensions needed for benchmarking + virtual switches. Inital feedback indicates that many of these + extensions may be applicable beyond the current scope (to hardware + switches in the NFV Infrastructure and to virtual routers, for example). + Additionally, this memo serves as a vehicle to include more detail and + commentary from BMWG and other Open Source communities, under BMWG's + chartered work to characterize the NFV Infrastructure (a virtual switch + is an important aspect of that infrastructure).</t> + + <t>The benchmarking covered in this memo should be applicable to many + types of vswitches, and remain vswitch-agnostic to great degree. There + has been no attempt to track and test all features of any specific + vswitch implementation.</t> + </section> + + <section title="Benchmarking Considerations"> + <t>This section highlights some specific considerations (from <xref + target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual + switches. The OPNFV project is sharing its present view on these areas, + as they develop their specifications in the Level Test Design (LTD) + document.</t> + + <section title="Comparison with Physical Network Functions"> + <t>To compare the performance of virtual designs and implementations + with their physical counterparts, identical benchmarks are needed. + BMWG has developed specifications for many network functions this memo + re-uses existing benchmarks through references, and expands them + during development of new methods. A key configuration aspect is the + number of parallel cores required to achieve comparable performance + with a given physical device, or whether some limit of scale was + reached before the cores could achieve the comparable level.</t> + + <t>It's unlikely that the virtual switch will be the only application + running on the SUT, so CPU utilization, Cache utilization, and Memory + footprint should also be recorded for the virtual implementations of + internetworking functions.</t> + </section> + + <section title="Continued Emphasis on Black-Box Benchmarks"> + <t>External observations remain essential as the basis for Benchmarks. + Internal observations with fixed specification and interpretation will + be provided in parallel to assist the development of operations + procedures when the technology is deployed.</t> + </section> + + <section title="New Configuration Parameters"> + <t>A key consideration when conducting any sort of benchmark is trying + to ensure the consistency and repeatability of test results. When + benchmarking the performance of a vSwitch there are many factors that + can affect the consistency of results, one key factor is matching the + various hardware and software details of the SUT. This section lists + some of the many new parameters which this project believes are + critical to report in order to achieve repeatability.</t> + + <t>Hardware details including:</t> + + <t><list style="symbols"> + <t>Platform details</t> + + <t>Processor details</t> + + <t>Memory information (type and size)</t> + + <t>Number of enabled cores</t> + + <t>Number of cores used for the test</t> + + <t>Number of physical NICs, as well as their details + (manufacturer, versions, type and the PCI slot they are plugged + into)</t> + + <t>NIC interrupt configuration</t> + + <t>BIOS version, release date and any configurations that were + modified</t> + + <t>CPU microcode level</t> + + <t>Memory DIMM configurations (quad rank performance may not be + the same as dual rank) in size, freq and slot locations</t> + + <t>PCI configuration parameters (payload size, early ack + option...)</t> + + <t>Power management at all levels (ACPI sleep states, processor + package, OS...)</t> + </list>Software details including:</t> + + <t><list style="symbols"> + <t>OS parameters and behavior (text vs graphical no one typing at + the console on one system)</t> + + <t>OS version (for host and VNF)</t> + + <t>Kernel version (for host and VNF)</t> + + <t>GRUB boot parameters (for host and VNF)</t> + + <t>Hypervisor details (Type and version)</t> + + <t>Selected vSwitch, version number or commit id used</t> + + <t>vSwitch launch command line if it has been parameterised</t> + + <t>Memory allocation to the vSwitch</t> + + <t>which NUMA node it is using, and how many memory channels</t> + + <t>DPDK or any other SW dependency version number or commit id + used</t> + + <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t> + + <t>VM storage type: snapshot/independent persistent/independent + non-persistent</t> + + <t>Number of VMs</t> + + <t>Number of Virtual NICs (vNICs), versions, type and driver</t> + + <t>Number of virtual CPUs and their core affinity on the host</t> + + <t>Number vNIC interrupt configuration</t> + + <t>Thread affinitization for the applications (including the + vSwitch itself) on the host</t> + + <t>Details of Resource isolation, such as CPUs designated for + Host/Kernel (isolcpu) and CPUs designated for specific processes + (taskset). - Test duration. - Number of flows.</t> + </list></t> + + <t>Test Traffic Information:<list style="symbols"> + <t>Traffic type - UDP, TCP, IMIX / Other</t> + + <t>Packet Sizes</t> + + <t>Deployment Scenario</t> + </list></t> + + <t/> + </section> + + <section title="Flow classification"> + <t>Virtual switches group packets into flows by processing and + matching particular packet or frame header information, or by matching + packets based on the input ports. Thus a flow can be thought of a + sequence of packets that have the same set of header field values + (5-tuple) or have arrived on the same port. Performance results can + vary based on the parameters the vSwitch uses to match for a flow. The + recommended flow classification parameters for any vSwitch performance + tests are: the input port, the source IP address, the destination IP + address and the Ethernet protocol type field. It is essential to + increase the flow timeout time on a vSwitch before conducting any + performance tests that do not measure the flow setup time. Normally + the first packet of a particular stream will install the flow in the + virtual switch which adds an additional latency, subsequent packets of + the same flow are not subject to this latency if the flow is already + installed on the vSwitch.</t> + </section> + + <section title="Benchmarks using Baselines with Resource Isolation"> + <t>This outline describes measurement of baseline with isolated + resources at a high level, which is the intended approach at this + time.</t> + + <t><list style="numbers"> + <t>Baselines: <list style="symbols"> + <t>Optional: Benchmark platform forwarding capability without + a vswitch or VNF for at least 72 hours (serves as a means of + platform validation and a means to obtain the base performance + for the platform in terms of its maximum forwarding rate and + latency). <figure> + <preamble>Benchmark platform forwarding + capability</preamble> + + <artwork align="right"><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | Simple Forwarding App | | Host + | | | | | + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmark VNF forwarding capability with direct + connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72 + hours (serves as a means of VNF validation and a means to + obtain the base performance for the VNF in terms of its + maximum forwarding rate and latency). The metrics gathered + from this test will serve as a key comparison point for + vSwitch bypass technologies performance and vSwitch + performance. <figure align="right"> + <preamble>Benchmark VNF forwarding capability</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | VNF | | | + | | | | | + | +------------------------------------------+ | | + | | Passthrough/SR-IOV | | Host + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmarking with isolated resources alone, with other + resources (both HW&SW) disabled Example, vSw and VM are + SUT</t> + + <t>Benchmarking with isolated resources alone, leaving some + resources unused</t> + + <t>Benchmark with isolated resources and all resources + occupied</t> + </list></t> + + <t>Next Steps<list style="symbols"> + <t>Limited sharing</t> + + <t>Production scenarios</t> + + <t>Stressful scenarios</t> + </list></t> + </list></t> + </section> + </section> + + <section title="VSWITCHPERF Specification Summary"> + <t>The overall specification in preparation is referred to as a Level + Test Design (LTD) document, which will contain a suite of performance + tests. The base performance tests in the LTD are based on the + pre-existing specifications developed by BMWG to test the performance of + physical switches. These specifications include:</t> + + <t><list style="symbols"> + <t><xref target="RFC2544"/> Benchmarking Methodology for Network + Interconnect Devices</t> + + <t><xref target="RFC2889"/> Benchmarking Methodology for LAN + Switching</t> + + <t><xref target="RFC6201"/> Device Reset Characterization</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t>Some of the above/newer RFCs are being applied in benchmarking for + the first time, and represent a development challenge for test equipment + developers. Fortunately, many members of the testing system community + have engaged on the VSPERF project, including an open source test + system.</t> + + <t>In addition to this, the LTD also re-uses the terminology defined + by:</t> + + <t><list style="symbols"> + <t><xref target="RFC2285"/> Benchmarking Terminology for LAN + Switching Devices</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t/> + + <t>Specifications to be included in future updates of the LTD + include:<list style="symbols"> + <t><xref target="RFC3918"/> Methodology for IP Multicast + Benchmarking</t> + + <t><xref target="RFC4737"/> Packet Reordering Metrics</t> + </list></t> + + <t>As one might expect, the most fundamental internetworking + characteristics of Throughput and Latency remain important when the + switch is virtualized, and these benchmarks figure prominently in the + specification.</t> + + <t>When considering characteristics important to "telco" network + functions, we must begin to consider additional performance metrics. In + this case, the project specifications have referenced metrics from the + IETF IP Performance Metrics (IPPM) literature. This means that the <xref + target="RFC2544"/> test of Latency is replaced by measurement of a + metric derived from IPPM's <xref target="RFC2679"/>, where a set of + statistical summaries will be provided (mean, max, min, etc.). Further + metrics planned to be benchmarked include packet delay variation as + defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT + availability, DUT capacity and packet loss in long term testing at + Throughput level, where some low-level of background loss may be present + and characterized.</t> + + <t>Tests have been (or will be) designed to collect the metrics + below:</t> + + <t><list style="symbols"> + <t>Throughput Tests to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by <xref target="RFC1242"/>) without traffic loss.</t> + + <t>Packet and Frame Delay Distribution Tests to measure average, min + and max packet and frame delay for constant loads.</t> + + <t>Packet Delay Tests to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers.</t> + + <t>Scalability Tests to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic’s configuration… it has to deal with + increases.</t> + + <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the switch.</t> + + <t>Control Path and Datapath Coupling Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT (example: + delay of the initial packet of a flow).</t> + + <t>CPU and Memory Consumption Tests to understand the virtual + switch’s footprint on the system, usually conducted as + auxiliary measurements with benchmarks above. They include: CPU + utilization, Cache utilization and Memory footprint.</t> + + <t>The so-called "Soak" tests, where the selected test is conducted + over a long period of time (with an ideal duration of 24 hours, but + only long enough to determine that stability issues exist when + found; there is no requirement to continue a test when a DUT + exhibits instability over time). The key performance characteristics + and benchmarks for a DUT are determined (using short duration tests) + prior to conducting soak tests. The purpose of soak tests is to + capture transient changes in performance which may occur due to + infrequent processes, memory leaks, or the low probability + coincidence of two or more processes. The stability of the DUT is + the paramount consideration, so performance must be evaluated + periodically during continuous testing, and this results in use of + <xref target="RFC2889"/> Frame Rate metrics instead of <xref + target="RFC2544"/> Throughput (which requires stopping traffic to + allow time for all traffic to exit internal queues), for + example.</t> + </list></t> + + <t>Future/planned test specs include:<list style="symbols"> + <t>Request/Response Performance Tests (TCP, UDP) which measure the + transaction rate through the switch.</t> + + <t>Noisy Neighbour Tests, to understand the effects of resource + sharing on the performance of a virtual switch.</t> + + <t>Tests derived from examination of ETSI NFV Draft GS IFA003 + requirements <xref target="IFA003"/> on characterization of + acceleration technologies applied to vswitches.</t> + </list>The flexibility of deployment of a virtual switch within a + network means that the BMWG IETF existing literature needs to be used to + characterize the performance of a switch in various deployment + scenarios. The deployment scenarios under consideration include:</t> + + <t><figure> + <preamble>Physical port to virtual switch to physical + port</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure></t> + + <t><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ __| + ^ : + | | + : v __ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | |-----------------| v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ __| + ^ + | + : __ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ __| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ __| + : + | + v __ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ __| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | | | | ^ | | + | v | | | | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 | | | | 0 | | | + +---+---------------+--+ +---+---------------+--+__| + : ^ + | | + v : _ + +---+---------------+---------+---------------+--+ | + | | 1 | | 1 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | | ^ | | Host + | L-----------------+ | | + | | | + | vSwitch | | + +------------------------------------------------+_|]]></artwork> + </figure></t> + + <t>A set of Deployment Scenario figures is available on the VSPERF Test + Methodology Wiki page <xref target="TestTopo"/>.</t> + </section> + + <section title="3x3 Matrix Coverage"> + <t>This section organizes the many existing test specifications into the + "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>). + Because the LTD specification ID names are quite long, this section is + organized into lists for each occupied cell of the matrix (not all are + occupied, also the matrix has grown to 3x4 to accommodate scale metrics + when displaying the coverage of many metrics/benchmarks). The current + version of the LTD specification is available <xref target="LTD"/>.</t> + + <t>The tests listed below assess the activation of paths in the data + plane, rather than the control plane.</t> + + <t>A complete list of tests with short summaries is available on the + VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t> + + <section title="Speed of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressLearningRate</t> + + <t>PacketLatency.InitialPacketProcessingLatency</t> + </list></t> + </section> + + <section title="Accuracy of Activation section"> + <t><list style="symbols"> + <t>CPDP.Coupling.Flow.Addition</t> + </list></t> + </section> + + <section title="Reliability of Activation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.SystemRecoveryTime</t> + + <t>Throughput.RFC2544.ResetTime</t> + </list></t> + </section> + + <section title="Scale of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressCachingCapacity</t> + </list></t> + </section> + + <section title="Speed of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.PacketLossRate</t> + + <t>CPU.RFC2544.0PacketLoss</t> + + <t>Throughput.RFC2544.PacketLossRateFrameModification</t> + + <t>Throughput.RFC2544.BackToBackFrames</t> + + <t>Throughput.RFC2889.MaxForwardingRate</t> + + <t>Throughput.RFC2889.ForwardPressure</t> + + <t>Throughput.RFC2889.BroadcastFrameForwarding</t> + </list></t> + </section> + + <section title="Accuracy of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.ErrorFramesFiltering</t> + + <t>Throughput.RFC2544.Profile</t> + </list></t> + </section> + + <section title="Reliability of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.Soak</t> + + <t>Throughput.RFC2889.SoakFrameModification</t> + + <t>PacketDelayVariation.RFC3393.Soak</t> + </list></t> + </section> + + <section title="Scalability of Operation"> + <t><list style="symbols"> + <t>Scalability.RFC2544.0PacketLoss</t> + + <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t> + </list></t> + </section> + + <section title="Summary"> + <t><figure> + <artwork><![CDATA[|------------------------------------------------------------------------| +| | | | | | +| | SPEED | ACCURACY | RELIABILITY | SCALE | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Activation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Operation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| De-activation | | | | | +| | | | | | +|------------------------------------------------------------------------|]]></artwork> + </figure></t> + </section> + </section> + + <section title="Security Considerations"> + <t>Benchmarking activities as described in this memo are limited to + technology characterization of a Device Under Test/System Under Test + (DUT/SUT) using controlled stimuli in a laboratory environment, with + dedicated address space and the constraints specified in the sections + above.</t> + + <t>The benchmarking network topology will be an independent test setup + and MUST NOT be connected to devices that may forward the test traffic + into a production network, or misroute traffic to the test management + network.</t> + + <t>Further, benchmarking is performed on a "black-box" basis, relying + solely on measurements observable external to the DUT/SUT.</t> + + <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for + benchmarking purposes. Any implications for network security arising + from the DUT/SUT SHOULD be identical in the lab and in production + networks.</t> + </section> + + <section anchor="IANA" title="IANA Considerations"> + <t>No IANA Action is requested at this time.</t> + </section> + + <section title="Acknowledgements"> + <t>The authors appreciate and acknowledge comments from Scott Bradner, + Marius Georgescu, Ramki Krishnan, Doug Montgomery, Martin Klozik, + Christian Trautman, and others for their reviews.</t> + </section> + </middle> + + <back> + <references title="Normative References"> + <?rfc ?> + + <?rfc include="reference.RFC.2119"?> + + <?rfc ?> + + <?rfc include="reference.RFC.2330"?> + + <?rfc include='reference.RFC.2544'?> + + <?rfc include="reference.RFC.2679"?> + + <?rfc include='reference.RFC.2680'?> + + <?rfc include='reference.RFC.3393'?> + + <?rfc include='reference.RFC.3432'?> + + <?rfc include='reference.RFC.2681'?> + + <?rfc include='reference.RFC.5905'?> + + <?rfc include='reference.RFC.4689'?> + + <?rfc include='reference.RFC.4737'?> + + <?rfc include='reference.RFC.5357'?> + + <?rfc include='reference.RFC.2889'?> + + <?rfc include='reference.RFC.3918'?> + + <?rfc include='reference.RFC.6201'?> + + <?rfc include='reference.RFC.2285'?> + + <reference anchor="NFV.PER001"> + <front> + <title>Network Function Virtualization: Performance and Portability + Best Practices</title> + + <author fullname="ETSI NFV" initials="" surname=""> + <organization/> + </author> + + <date month="June" year="2014"/> + </front> + + <seriesInfo name="Group Specification" + value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/> + + <format type="PDF"/> + </reference> + </references> + + <references title="Informative References"> + <?rfc include='reference.RFC.1242'?> + + <?rfc include='reference.RFC.5481'?> + + <?rfc include='reference.RFC.6049'?> + + <?rfc include='reference.RFC.6248'?> + + <?rfc include='reference.RFC.6390'?> + + <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?> + + <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?> + + <reference anchor="TestTopo"> + <front> + <title>Test Topologies + https://wiki.opnfv.org/vsperf/test_methodology</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTDoverV"> + <front> + <title>LTD Test Spec Overview + https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTD"> + <front> + <title>LTD Test Specification + http://artifacts.opnfv.org/vswitchperf/brahmaputra/docs/requirements/index.html</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="BrahRel"> + <front> + <title>Brahmaputra, Second OPNFV Release + https://www.opnfv.org/brahmaputra</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="IFA003"> + <front> + <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + </references> + </back> +</rfc> diff --git a/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-00.xml b/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-00.xml new file mode 100644 index 00000000..b5f7f833 --- /dev/null +++ b/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-00.xml @@ -0,0 +1,964 @@ +<?xml version="1.0" encoding="US-ASCII"?> +<!DOCTYPE rfc SYSTEM "rfc2629.dtd"> +<?rfc toc="yes"?> +<?rfc tocompact="yes"?> +<?rfc tocdepth="3"?> +<?rfc tocindent="yes"?> +<?rfc symrefs="yes"?> +<?rfc sortrefs="yes"?> +<?rfc comments="yes"?> +<?rfc inline="yes"?> +<?rfc compact="yes"?> +<?rfc subcompact="no"?> +<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-01" + ipr="trust200902"> + <front> + <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in + OPNFV</title> + + <author fullname="Maryam Tahhan" initials="M." surname="Tahhan"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>maryam.tahhan@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>billy.o.mahony@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Al Morton" initials="A." surname="Morton"> + <organization>AT&T Labs</organization> + + <address> + <postal> + <street>200 Laurel Avenue South</street> + + <city>Middletown,</city> + + <region>NJ</region> + + <code>07748</code> + + <country>USA</country> + </postal> + + <phone>+1 732 420 1571</phone> + + <facsimile>+1 732 368 1192</facsimile> + + <email>acmorton@att.com</email> + + <uri>http://home.comcast.net/~acmacm/</uri> + </address> + </author> + + <date day="14" month="October" year="2015"/> + + <abstract> + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance "VSWITCHPERF". This project + intends to build on the current and completed work of the Benchmarking + Methodology Working Group in IETF, by referencing existing literature. + The Benchmarking Methodology Working Group has traditionally conducted + laboratory characterization of dedicated physical implementations of + internetworking functions. Therefore, this memo begins to describe the + additional considerations when virtual switches are implemented in + general-purpose hardware. The expanded tests and benchmarks are also + influenced by the OPNFV mission to support virtualization of the "telco" + infrastructure.</t> + </abstract> + + <note title="Requirements Language"> + <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", + "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this + document are to be interpreted as described in <xref + target="RFC2119">RFC 2119</xref>.</t> + + <t/> + </note> + </front> + + <middle> + <section title="Introduction"> + <t>Benchmarking Methodology Working Group (BMWG) has traditionally + conducted laboratory characterization of dedicated physical + implementations of internetworking functions. The Black-box Benchmarks + of Throughput, Latency, Forwarding Rates and others have served our + industry for many years. Now, Network Function Virtualization (NFV) has + the goal to transform how internetwork functions are implemented, and + therefore has garnered much attention.</t> + + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance characterization, "VSWITCHPERF". + This project intends to build on the current and completed work of the + Benchmarking Methodology Working Group in IETF, by referencing existing + literature. For example, currently the most often referenced RFC is + <xref target="RFC2544"/> (which depends on <xref target="RFC1242"/>) and + foundation of the benchmarking work in OPNFV is common and strong.</t> + + <t>See + https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases + for more background, and the OPNFV website for general information: + https://www.opnfv.org/</t> + + <t>The authors note that OPNFV distinguishes itself from other open + source compute and networking projects through its emphasis on existing + "telco" services as opposed to cloud-computing. There are many ways in + which telco requirements have different emphasis on performance + dimensions when compared to cloud computing: support for and transfer of + isochronous media streams is one example.</t> + + <t>Note also that the move to NFV Infrastructure has resulted in many + new benchmarking initiatives across the industry, and the authors are + currently doing their best to maintain alignment with many other + projects, and this Internet Draft is evidence of the efforts.</t> + </section> + + <section title="Scope"> + <t>The primary purpose and scope of the memo is to inform BMWG of + work-in-progress that builds on the body of extensive literature and + experience. Additionally, once the initial information conveyed here is + received, this memo may be expanded to include more detail and + commentary from both BMWG and OPNFV communities, under BMWG's chartered + work to characterize the NFV Infrastructure (a virtual switch is an + important aspect of that infrastructure).</t> + </section> + + <section title="Benchmarking Considerations"> + <t>This section highlights some specific considerations (from <xref + target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual + switches. The OPNFV project is sharing its present view on these areas, + as they develop their specifications in the Level Test Design (LTD) + document.</t> + + <section title="Comparison with Physical Network Functions"> + <t>To compare the performance of virtual designs and implementations + with their physical counterparts, identical benchmarks are needed. + BMWG has developed specifications for many network functions this memo + re-uses existing benchmarks through references, and expands them + during development of new methods. A key configuration aspect is the + number of parallel cores required to achieve comparable performance + with a given physical device, or whether some limit of scale was + reached before the cores could achieve the comparable level.</t> + + <t>It's unlikely that the virtual switch will be the only application + running on the SUT, so CPU utilization, Cache utilization, and Memory + footprint should also be recorded for the virtual implementations of + internetworking functions.</t> + </section> + + <section title="Continued Emphasis on Black-Box Benchmarks"> + <t>External observations remain essential as the basis for Benchmarks. + Internal observations with fixed specification and interpretation will + be provided in parallel to assist the development of operations + procedures when the technology is deployed.</t> + </section> + + <section title="New Configuration Parameters"> + <t>A key consideration when conducting any sort of benchmark is trying + to ensure the consistency and repeatability of test results. When + benchmarking the performance of a vSwitch there are many factors that + can affect the consistency of results, one key factor is matching the + various hardware and software details of the SUT. This section lists + some of the many new parameters which this project believes are + critical to report in order to achieve repeatability.</t> + + <t>Hardware details including:</t> + + <t><list style="symbols"> + <t>Platform details</t> + + <t>Processor details</t> + + <t>Memory information (type and size)</t> + + <t>Number of enabled cores</t> + + <t>Number of cores used for the test</t> + + <t>Number of physical NICs, as well as their details + (manufacturer, versions, type and the PCI slot they are plugged + into)</t> + + <t>NIC interrupt configuration</t> + + <t>BIOS version, release date and any configurations that were + modified</t> + + <t>CPU microcode level</t> + + <t>Memory DIMM configurations (quad rank performance may not be + the same as dual rank) in size, freq and slot locations</t> + + <t>PCI configuration parameters (payload size, early ack + option...)</t> + + <t>Power management at all levels (ACPI sleep states, processor + package, OS...)</t> + </list>Software details including:</t> + + <t><list style="symbols"> + <t>OS parameters and behavior (text vs graphical no one typing at + the console on one system)</t> + + <t>OS version (for host and VNF)</t> + + <t>Kernel version (for host and VNF)</t> + + <t>GRUB boot parameters (for host and VNF)</t> + + <t>Hypervisor details (Type and version)</t> + + <t>Selected vSwitch, version number or commit id used</t> + + <t>vSwitch launch command line if it has been parameterised</t> + + <t>Memory allocation to the vSwitch</t> + + <t>which NUMA node it is using, and how many memory channels</t> + + <t>DPDK or any other SW dependency version number or commit id + used</t> + + <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t> + + <t>VM storage type: snapshot/independent persistent/independent + non-persistent</t> + + <t>Number of VMs</t> + + <t>Number of Virtual NICs (vNICs), versions, type and driver</t> + + <t>Number of virtual CPUs and their core affinity on the host</t> + + <t>Number vNIC interrupt configuration</t> + + <t>Thread affinitization for the applications (including the + vSwitch itself) on the host</t> + + <t>Details of Resource isolation, such as CPUs designated for + Host/Kernel (isolcpu) and CPUs designated for specific processes + (taskset). - Test duration. - Number of flows.</t> + </list></t> + + <t>Test Traffic Information:<list style="symbols"> + <t>Traffic type - UDP, TCP, IMIX / Other</t> + + <t>Packet Sizes</t> + + <t>Deployment Scenario</t> + </list></t> + + <t/> + </section> + + <section title="Flow classification"> + <t>Virtual switches group packets into flows by processing and + matching particular packet or frame header information, or by matching + packets based on the input ports. Thus a flow can be thought of a + sequence of packets that have the same set of header field values or + have arrived on the same port. Performance results can vary based on + the parameters the vSwitch uses to match for a flow. The recommended + flow classification parameters for any vSwitch performance tests are: + the input port, the source IP address, the destination IP address and + the Ethernet protocol type field. It is essential to increase the flow + timeout time on a vSwitch before conducting any performance tests that + do not measure the flow setup time. Normally the first packet of a + particular stream will install the flow in the virtual switch which + adds an additional latency, subsequent packets of the same flow are + not subject to this latency if the flow is already installed on the + vSwitch.</t> + </section> + + <section title="Benchmarks using Baselines with Resource Isolation"> + <t>This outline describes measurement of baseline with isolated + resources at a high level, which is the intended approach at this + time.</t> + + <t><list style="numbers"> + <t>Baselines: <list style="symbols"> + <t>Optional: Benchmark platform forwarding capability without + a vswitch or VNF for at least 72 hours (serves as a means of + platform validation and a means to obtain the base performance + for the platform in terms of its maximum forwarding rate and + latency). <figure> + <preamble>Benchmark platform forwarding + capability</preamble> + + <artwork align="right"><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | Simple Forwarding App | | Host + | | | | | + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmark VNF forwarding capability with direct + connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72 + hours (serves as a means of VNF validation and a means to + obtain the base performance for the VNF in terms of its + maximum forwarding rate and latency). The metrics gathered + from this test will serve as a key comparison point for + vSwitch bypass technologies performance and vSwitch + performance. <figure align="right"> + <preamble>Benchmark VNF forwarding capability</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | VNF | | | + | | | | | + | +------------------------------------------+ | | + | | Passthrough/SR-IOV | | Host + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmarking with isolated resources alone, with other + resources (both HW&SW) disabled Example, vSw and VM are + SUT</t> + + <t>Benchmarking with isolated resources alone, leaving some + resources unused</t> + + <t>Benchmark with isolated resources and all resources + occupied</t> + </list></t> + + <t>Next Steps<list style="symbols"> + <t>Limited sharing</t> + + <t>Production scenarios</t> + + <t>Stressful scenarios</t> + </list></t> + </list></t> + </section> + </section> + + <section title="VSWITCHPERF Specification Summary"> + <t>The overall specification in preparation is referred to as a Level + Test Design (LTD) document, which will contain a suite of performance + tests. The base performance tests in the LTD are based on the + pre-existing specifications developed by BMWG to test the performance of + physical switches. These specifications include:</t> + + <t><list style="symbols"> + <t><xref target="RFC2544"/> Benchmarking Methodology for Network + Interconnect Devices</t> + + <t><xref target="RFC2889"/> Benchmarking Methodology for LAN + Switching</t> + + <t><xref target="RFC6201"/> Device Reset Characterization</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t>Some of the above/newer RFCs are being applied in benchmarking for + the first time, and represent a development challenge for test equipment + developers. Fortunately, many members of the testing system community + have engaged on the VSPERF project, including an open source test + system.</t> + + <t>In addition to this, the LTD also re-uses the terminology defined + by:</t> + + <t><list style="symbols"> + <t><xref target="RFC2285"/> Benchmarking Terminology for LAN + Switching Devices</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t/> + + <t>Specifications to be included in future updates of the LTD + include:<list style="symbols"> + <t><xref target="RFC3918"/> Methodology for IP Multicast + Benchmarking</t> + + <t><xref target="RFC4737"/> Packet Reordering Metrics</t> + </list></t> + + <t>As one might expect, the most fundamental internetworking + characteristics of Throughput and Latency remain important when the + switch is virtualized, and these benchmarks figure prominently in the + specification.</t> + + <t>When considering characteristics important to "telco" network + functions, we must begin to consider additional performance metrics. In + this case, the project specifications have referenced metrics from the + IETF IP Performance Metrics (IPPM) literature. This means that the <xref + target="RFC2544"/> test of Latency is replaced by measurement of a + metric derived from IPPM's <xref target="RFC2679"/>, where a set of + statistical summaries will be provided (mean, max, min, etc.). Further + metrics planned to be benchmarked include packet delay variation as + defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT + availability, DUT capacity and packet loss in long term testing at + Throughput level, where some low-level of background loss may be present + and characterized.</t> + + <t>Tests have been (or will be) designed to collect the metrics + below:</t> + + <t><list style="symbols"> + <t>Throughput Tests to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by RFC1242) without traffic loss.</t> + + <t>Packet and Frame Delay Distribution Tests to measure average, min + and max packet and frame delay for constant loads.</t> + + <t>Packet Delay Tests to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers.</t> + + <t>Scalability Tests to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic’s configuration… it has to deal with + increases.</t> + + <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the switch.</t> + + <t>Control Path and Datapath Coupling Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT (example: + delay of the initial packet of a flow).</t> + + <t>CPU and Memory Consumption Tests to understand the virtual + switch’s footprint on the system, usually conducted as + auxiliary measurements with benchmarks above. They include: CPU + utilization, Cache utilization and Memory footprint.</t> + </list></t> + + <t>Future/planned test specs include:<list style="symbols"> + <t>Request/Response Performance Tests (TCP, UDP) which measure the + transaction rate through the switch.</t> + + <t>Noisy Neighbour Tests, to understand the effects of resource + sharing on the performance of a virtual switch.</t> + + <t>Tests derived from examination of ETSI NFV Draft GS IFA003 + requirements <xref target="IFA003"/> on characterization of + acceleration technologies applied to vswitches.</t> + </list>The flexibility of deployment of a virtual switch within a + network means that the BMWG IETF existing literature needs to be used to + characterize the performance of a switch in various deployment + scenarios. The deployment scenarios under consideration include:</t> + + <t><figure> + <preamble>Physical port to virtual switch to physical + port</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure></t> + + <t><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ __| + ^ : + | | + : v __ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | |-----------------| v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ __| + ^ + | + : __ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ __| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ __| + : + | + v __ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ __| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | | | | ^ | | + | v | | | | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 | | | | 0 | | | + +---+---------------+--+ +---+---------------+--+__| + : ^ + | | + v : _ + +---+---------------+---------+---------------+--+ | + | | 1 | | 1 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | | ^ | | Host + | L-----------------+ | | + | | | + | vSwitch | | + +------------------------------------------------+_|]]></artwork> + </figure></t> + + <t>A set of Deployment Scenario figures is available on the VSPERF Test + Methodology Wiki page <xref target="TestTopo"/>. </t> + </section> + + <section title="3x3 Matrix Coverage"> + <t>This section organizes the many existing test specifications into the + "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>). + Because the LTD specification ID names are quite long, this section is + organized into lists for each occupied cell of the matrix (not all are + occupied, also the matrix has grown to 3x4 to accommodate scale metrics + when displaying the coverage of many metrics/benchmarks).</t> + + <t>The tests listed below assess the activation of paths in the data + plane, rather than the control plane.</t> + + <t>A complete list of tests with short summaries is available on the + VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t> + + <section title="Speed of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressLearningRate</t> + + <t>PacketLatency.InitialPacketProcessingLatency</t> + </list></t> + </section> + + <section title="Accuracy of Activation section"> + <t><list style="symbols"> + <t>CPDP.Coupling.Flow.Addition</t> + </list></t> + </section> + + <section title="Reliability of Activation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.SystemRecoveryTime</t> + + <t>Throughput.RFC2544.ResetTime</t> + </list></t> + </section> + + <section title="Scale of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressCachingCapacity</t> + </list></t> + </section> + + <section title="Speed of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.PacketLossRate</t> + + <t>CPU.RFC2544.0PacketLoss</t> + + <t>Throughput.RFC2544.PacketLossRateFrameModification</t> + + <t>Throughput.RFC2544.BackToBackFrames</t> + + <t>Throughput.RFC2889.MaxForwardingRate</t> + + <t>Throughput.RFC2889.ForwardPressure</t> + + <t>Throughput.RFC2889.BroadcastFrameForwarding</t> + </list></t> + </section> + + <section title="Accuracy of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.ErrorFramesFiltering</t> + + <t>Throughput.RFC2544.Profile</t> + </list></t> + </section> + + <section title="Reliability of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.Soak</t> + + <t>Throughput.RFC2889.SoakFrameModification</t> + + <t>PacketDelayVariation.RFC3393.Soak</t> + </list></t> + </section> + + <section title="Scalability of Operation"> + <t><list style="symbols"> + <t>Scalability.RFC2544.0PacketLoss</t> + + <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t> + </list></t> + </section> + + <section title="Summary"> + <t><figure> + <artwork><![CDATA[|------------------------------------------------------------------------| +| | | | | | +| | SPEED | ACCURACY | RELIABILITY | SCALE | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Activation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Operation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| De-activation | | | | | +| | | | | | +|------------------------------------------------------------------------|]]></artwork> + </figure></t> + </section> + </section> + + <section title="Security Considerations"> + <t>Benchmarking activities as described in this memo are limited to + technology characterization of a Device Under Test/System Under Test + (DUT/SUT) using controlled stimuli in a laboratory environment, with + dedicated address space and the constraints specified in the sections + above.</t> + + <t>The benchmarking network topology will be an independent test setup + and MUST NOT be connected to devices that may forward the test traffic + into a production network, or misroute traffic to the test management + network.</t> + + <t>Further, benchmarking is performed on a "black-box" basis, relying + solely on measurements observable external to the DUT/SUT.</t> + + <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for + benchmarking purposes. Any implications for network security arising + from the DUT/SUT SHOULD be identical in the lab and in production + networks.</t> + </section> + + <section anchor="IANA" title="IANA Considerations"> + <t>No IANA Action is requested at this time.</t> + </section> + + <section title="Acknowledgements"> + <t>The authors acknowledge</t> + </section> + </middle> + + <back> + <references title="Normative References"> + <?rfc ?> + + <?rfc include="reference.RFC.2119"?> + + <?rfc include="reference.RFC.2330"?> + + <?rfc include='reference.RFC.2544'?> + + <?rfc include="reference.RFC.2679"?> + + <?rfc include='reference.RFC.2680'?> + + <?rfc include='reference.RFC.3393'?> + + <?rfc include='reference.RFC.3432'?> + + <?rfc include='reference.RFC.2681'?> + + <?rfc include='reference.RFC.5905'?> + + <?rfc include='reference.RFC.4689'?> + + <?rfc include='reference.RFC.4737'?> + + <?rfc include='reference.RFC.5357'?> + + <?rfc include='reference.RFC.2889'?> + + <?rfc include='reference.RFC.3918'?> + + <?rfc include='reference.RFC.6201'?> + + <?rfc include='reference.RFC.2285'?> + + <reference anchor="NFV.PER001"> + <front> + <title>Network Function Virtualization: Performance and Portability + Best Practices</title> + + <author fullname="ETSI NFV" initials="" surname=""> + <organization/> + </author> + + <date month="June" year="2014"/> + </front> + + <seriesInfo name="Group Specification" + value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/> + + <format type="PDF"/> + </reference> + </references> + + <references title="Informative References"> + <?rfc include='reference.RFC.1242'?> + + <?rfc include='reference.RFC.5481'?> + + <?rfc include='reference.RFC.6049'?> + + <?rfc include='reference.RFC.6248'?> + + <?rfc include='reference.RFC.6390'?> + + <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?> + + <reference anchor="TestTopo"> + <front> + <title>Test Topologies + https://wiki.opnfv.org/vsperf/test_methodology</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTDoverV"> + <front> + <title>LTD Test Spec Overview + https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review </title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="IFA003"> + <front> + <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + </references> + </back> +</rfc> diff --git a/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-01.xml b/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-01.xml new file mode 100644 index 00000000..a9405a77 --- /dev/null +++ b/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-01.xml @@ -0,0 +1,1016 @@ +<?xml version="1.0" encoding="US-ASCII"?> +<!DOCTYPE rfc SYSTEM "rfc2629.dtd"> +<?rfc toc="yes"?> +<?rfc tocompact="yes"?> +<?rfc tocdepth="3"?> +<?rfc tocindent="yes"?> +<?rfc symrefs="yes"?> +<?rfc sortrefs="yes"?> +<?rfc comments="yes"?> +<?rfc inline="yes"?> +<?rfc compact="yes"?> +<?rfc subcompact="no"?> +<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-02" + ipr="trust200902"> + <front> + <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in + OPNFV</title> + + <author fullname="Maryam Tahhan" initials="M." surname="Tahhan"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>maryam.tahhan@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>billy.o.mahony@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Al Morton" initials="A." surname="Morton"> + <organization>AT&T Labs</organization> + + <address> + <postal> + <street>200 Laurel Avenue South</street> + + <city>Middletown,</city> + + <region>NJ</region> + + <code>07748</code> + + <country>USA</country> + </postal> + + <phone>+1 732 420 1571</phone> + + <facsimile>+1 732 368 1192</facsimile> + + <email>acmorton@att.com</email> + + <uri>http://home.comcast.net/~acmacm/</uri> + </address> + </author> + + <date day="20" month="March" year="2016"/> + + <abstract> + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance "VSWITCHPERF". This project + intends to build on the current and completed work of the Benchmarking + Methodology Working Group in IETF, by referencing existing literature. + The Benchmarking Methodology Working Group has traditionally conducted + laboratory characterization of dedicated physical implementations of + internetworking functions. Therefore, this memo begins to describe the + additional considerations when virtual switches are implemented in + general-purpose hardware. The expanded tests and benchmarks are also + influenced by the OPNFV mission to support virtualization of the "telco" + infrastructure.</t> + </abstract> + + <note title="Requirements Language"> + <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", + "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this + document are to be interpreted as described in <xref + target="RFC2119">RFC 2119</xref>.</t> + + <t/> + </note> + </front> + + <middle> + <section title="Introduction"> + <t>Benchmarking Methodology Working Group (BMWG) has traditionally + conducted laboratory characterization of dedicated physical + implementations of internetworking functions. The Black-box Benchmarks + of Throughput, Latency, Forwarding Rates and others have served our + industry for many years. Now, Network Function Virtualization (NFV) has + the goal to transform how internetwork functions are implemented, and + therefore has garnered much attention.</t> + + <t>This memo summarizes the progress of the Open Platform for NFV + (OPNFV) project on virtual switch performance characterization, + "VSWITCHPERF", through the Brahmaputra (second) release <xref + target="BrahRel"/>. This project intends to build on the current and + completed work of the Benchmarking Methodology Working Group in IETF, by + referencing existing literature. For example, currently the most often + referenced RFC is <xref target="RFC2544"/> (which depends on <xref + target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is + common and strong.</t> + + <t>See + https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases + for more background, and the OPNFV website for general information: + https://www.opnfv.org/</t> + + <t>The authors note that OPNFV distinguishes itself from other open + source compute and networking projects through its emphasis on existing + "telco" services as opposed to cloud-computing. There are many ways in + which telco requirements have different emphasis on performance + dimensions when compared to cloud computing: support for and transfer of + isochronous media streams is one example.</t> + + <t>Note also that the move to NFV Infrastructure has resulted in many + new benchmarking initiatives across the industry. The authors are + currently doing their best to maintain alignment with many other + projects, and this Internet Draft is one part of the efforts. We + acknowledge the early work in <xref + target="I-D.huang-bmwg-virtual-network-performance"/>, and useful + discussion with the authors.</t> + </section> + + <section title="Scope"> + <t>The primary purpose and scope of the memo is to inform the industry + of work-in-progress that builds on the body of extensive BMWG literature + and experience, and describe the extensions needed for benchmarking + virtual switches. Inital feedback indicates that many of these + extensions may be applicable beyond the current scope (to hardware + switches in the NFV Infrastructure and to virtual routers, for example). + Additionally, this memo serves as a vehicle to include more detail and + commentary from BMWG and other Open Source communities, under BMWG's + chartered work to characterize the NFV Infrastructure (a virtual switch + is an important aspect of that infrastructure).</t> + </section> + + <section title="Benchmarking Considerations"> + <t>This section highlights some specific considerations (from <xref + target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual + switches. The OPNFV project is sharing its present view on these areas, + as they develop their specifications in the Level Test Design (LTD) + document.</t> + + <section title="Comparison with Physical Network Functions"> + <t>To compare the performance of virtual designs and implementations + with their physical counterparts, identical benchmarks are needed. + BMWG has developed specifications for many network functions this memo + re-uses existing benchmarks through references, and expands them + during development of new methods. A key configuration aspect is the + number of parallel cores required to achieve comparable performance + with a given physical device, or whether some limit of scale was + reached before the cores could achieve the comparable level.</t> + + <t>It's unlikely that the virtual switch will be the only application + running on the SUT, so CPU utilization, Cache utilization, and Memory + footprint should also be recorded for the virtual implementations of + internetworking functions.</t> + </section> + + <section title="Continued Emphasis on Black-Box Benchmarks"> + <t>External observations remain essential as the basis for Benchmarks. + Internal observations with fixed specification and interpretation will + be provided in parallel to assist the development of operations + procedures when the technology is deployed.</t> + </section> + + <section title="New Configuration Parameters"> + <t>A key consideration when conducting any sort of benchmark is trying + to ensure the consistency and repeatability of test results. When + benchmarking the performance of a vSwitch there are many factors that + can affect the consistency of results, one key factor is matching the + various hardware and software details of the SUT. This section lists + some of the many new parameters which this project believes are + critical to report in order to achieve repeatability.</t> + + <t>Hardware details including:</t> + + <t><list style="symbols"> + <t>Platform details</t> + + <t>Processor details</t> + + <t>Memory information (type and size)</t> + + <t>Number of enabled cores</t> + + <t>Number of cores used for the test</t> + + <t>Number of physical NICs, as well as their details + (manufacturer, versions, type and the PCI slot they are plugged + into)</t> + + <t>NIC interrupt configuration</t> + + <t>BIOS version, release date and any configurations that were + modified</t> + + <t>CPU microcode level</t> + + <t>Memory DIMM configurations (quad rank performance may not be + the same as dual rank) in size, freq and slot locations</t> + + <t>PCI configuration parameters (payload size, early ack + option...)</t> + + <t>Power management at all levels (ACPI sleep states, processor + package, OS...)</t> + </list>Software details including:</t> + + <t><list style="symbols"> + <t>OS parameters and behavior (text vs graphical no one typing at + the console on one system)</t> + + <t>OS version (for host and VNF)</t> + + <t>Kernel version (for host and VNF)</t> + + <t>GRUB boot parameters (for host and VNF)</t> + + <t>Hypervisor details (Type and version)</t> + + <t>Selected vSwitch, version number or commit id used</t> + + <t>vSwitch launch command line if it has been parameterised</t> + + <t>Memory allocation to the vSwitch</t> + + <t>which NUMA node it is using, and how many memory channels</t> + + <t>DPDK or any other SW dependency version number or commit id + used</t> + + <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t> + + <t>VM storage type: snapshot/independent persistent/independent + non-persistent</t> + + <t>Number of VMs</t> + + <t>Number of Virtual NICs (vNICs), versions, type and driver</t> + + <t>Number of virtual CPUs and their core affinity on the host</t> + + <t>Number vNIC interrupt configuration</t> + + <t>Thread affinitization for the applications (including the + vSwitch itself) on the host</t> + + <t>Details of Resource isolation, such as CPUs designated for + Host/Kernel (isolcpu) and CPUs designated for specific processes + (taskset). - Test duration. - Number of flows.</t> + </list></t> + + <t>Test Traffic Information:<list style="symbols"> + <t>Traffic type - UDP, TCP, IMIX / Other</t> + + <t>Packet Sizes</t> + + <t>Deployment Scenario</t> + </list></t> + + <t/> + </section> + + <section title="Flow classification"> + <t>Virtual switches group packets into flows by processing and + matching particular packet or frame header information, or by matching + packets based on the input ports. Thus a flow can be thought of a + sequence of packets that have the same set of header field values or + have arrived on the same port. Performance results can vary based on + the parameters the vSwitch uses to match for a flow. The recommended + flow classification parameters for any vSwitch performance tests are: + the input port, the source IP address, the destination IP address and + the Ethernet protocol type field. It is essential to increase the flow + timeout time on a vSwitch before conducting any performance tests that + do not measure the flow setup time. Normally the first packet of a + particular stream will install the flow in the virtual switch which + adds an additional latency, subsequent packets of the same flow are + not subject to this latency if the flow is already installed on the + vSwitch.</t> + </section> + + <section title="Benchmarks using Baselines with Resource Isolation"> + <t>This outline describes measurement of baseline with isolated + resources at a high level, which is the intended approach at this + time.</t> + + <t><list style="numbers"> + <t>Baselines: <list style="symbols"> + <t>Optional: Benchmark platform forwarding capability without + a vswitch or VNF for at least 72 hours (serves as a means of + platform validation and a means to obtain the base performance + for the platform in terms of its maximum forwarding rate and + latency). <figure> + <preamble>Benchmark platform forwarding + capability</preamble> + + <artwork align="right"><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | Simple Forwarding App | | Host + | | | | | + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmark VNF forwarding capability with direct + connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72 + hours (serves as a means of VNF validation and a means to + obtain the base performance for the VNF in terms of its + maximum forwarding rate and latency). The metrics gathered + from this test will serve as a key comparison point for + vSwitch bypass technologies performance and vSwitch + performance. <figure align="right"> + <preamble>Benchmark VNF forwarding capability</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | VNF | | | + | | | | | + | +------------------------------------------+ | | + | | Passthrough/SR-IOV | | Host + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmarking with isolated resources alone, with other + resources (both HW&SW) disabled Example, vSw and VM are + SUT</t> + + <t>Benchmarking with isolated resources alone, leaving some + resources unused</t> + + <t>Benchmark with isolated resources and all resources + occupied</t> + </list></t> + + <t>Next Steps<list style="symbols"> + <t>Limited sharing</t> + + <t>Production scenarios</t> + + <t>Stressful scenarios</t> + </list></t> + </list></t> + </section> + </section> + + <section title="VSWITCHPERF Specification Summary"> + <t>The overall specification in preparation is referred to as a Level + Test Design (LTD) document, which will contain a suite of performance + tests. The base performance tests in the LTD are based on the + pre-existing specifications developed by BMWG to test the performance of + physical switches. These specifications include:</t> + + <t><list style="symbols"> + <t><xref target="RFC2544"/> Benchmarking Methodology for Network + Interconnect Devices</t> + + <t><xref target="RFC2889"/> Benchmarking Methodology for LAN + Switching</t> + + <t><xref target="RFC6201"/> Device Reset Characterization</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t>Some of the above/newer RFCs are being applied in benchmarking for + the first time, and represent a development challenge for test equipment + developers. Fortunately, many members of the testing system community + have engaged on the VSPERF project, including an open source test + system.</t> + + <t>In addition to this, the LTD also re-uses the terminology defined + by:</t> + + <t><list style="symbols"> + <t><xref target="RFC2285"/> Benchmarking Terminology for LAN + Switching Devices</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t/> + + <t>Specifications to be included in future updates of the LTD + include:<list style="symbols"> + <t><xref target="RFC3918"/> Methodology for IP Multicast + Benchmarking</t> + + <t><xref target="RFC4737"/> Packet Reordering Metrics</t> + </list></t> + + <t>As one might expect, the most fundamental internetworking + characteristics of Throughput and Latency remain important when the + switch is virtualized, and these benchmarks figure prominently in the + specification.</t> + + <t>When considering characteristics important to "telco" network + functions, we must begin to consider additional performance metrics. In + this case, the project specifications have referenced metrics from the + IETF IP Performance Metrics (IPPM) literature. This means that the <xref + target="RFC2544"/> test of Latency is replaced by measurement of a + metric derived from IPPM's <xref target="RFC2679"/>, where a set of + statistical summaries will be provided (mean, max, min, etc.). Further + metrics planned to be benchmarked include packet delay variation as + defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT + availability, DUT capacity and packet loss in long term testing at + Throughput level, where some low-level of background loss may be present + and characterized.</t> + + <t>Tests have been (or will be) designed to collect the metrics + below:</t> + + <t><list style="symbols"> + <t>Throughput Tests to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by <xref target="RFC1242"/>) without traffic loss.</t> + + <t>Packet and Frame Delay Distribution Tests to measure average, min + and max packet and frame delay for constant loads.</t> + + <t>Packet Delay Tests to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers.</t> + + <t>Scalability Tests to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic’s configuration… it has to deal with + increases.</t> + + <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the switch.</t> + + <t>Control Path and Datapath Coupling Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT (example: + delay of the initial packet of a flow).</t> + + <t>CPU and Memory Consumption Tests to understand the virtual + switch’s footprint on the system, usually conducted as + auxiliary measurements with benchmarks above. They include: CPU + utilization, Cache utilization and Memory footprint.</t> + + <t>The so-called "Soak" tests, where the selected test is conducted + over a long period of time (with an ideal duration of 24 hours, and + at least 6 hours). The purpose of soak tests is to capture transient + changes in performance which may occur due to infrequent processes + or the low probability coincidence of two or more processes. The + performance must be evaluated periodically during continuous + testing, and this results in use of <xref target="RFC2889"/> Frame + Rate metrics instead of <xref target="RFC2544"/> Throughput (which + requires stopping traffic to allow time for all traffic to exit + internal queues).</t> + </list></t> + + <t>Future/planned test specs include:<list style="symbols"> + <t>Request/Response Performance Tests (TCP, UDP) which measure the + transaction rate through the switch.</t> + + <t>Noisy Neighbour Tests, to understand the effects of resource + sharing on the performance of a virtual switch.</t> + + <t>Tests derived from examination of ETSI NFV Draft GS IFA003 + requirements <xref target="IFA003"/> on characterization of + acceleration technologies applied to vswitches.</t> + </list>The flexibility of deployment of a virtual switch within a + network means that the BMWG IETF existing literature needs to be used to + characterize the performance of a switch in various deployment + scenarios. The deployment scenarios under consideration include:</t> + + <t><figure> + <preamble>Physical port to virtual switch to physical + port</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure></t> + + <t><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ __| + ^ : + | | + : v __ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | |-----------------| v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ __| + ^ + | + : __ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ __| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ __| + : + | + v __ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ __| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | | | | ^ | | + | v | | | | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 | | | | 0 | | | + +---+---------------+--+ +---+---------------+--+__| + : ^ + | | + v : _ + +---+---------------+---------+---------------+--+ | + | | 1 | | 1 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | | ^ | | Host + | L-----------------+ | | + | | | + | vSwitch | | + +------------------------------------------------+_|]]></artwork> + </figure></t> + + <t>A set of Deployment Scenario figures is available on the VSPERF Test + Methodology Wiki page <xref target="TestTopo"/>.</t> + </section> + + <section title="3x3 Matrix Coverage"> + <t>This section organizes the many existing test specifications into the + "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>). + Because the LTD specification ID names are quite long, this section is + organized into lists for each occupied cell of the matrix (not all are + occupied, also the matrix has grown to 3x4 to accommodate scale metrics + when displaying the coverage of many metrics/benchmarks). The current + version of the LTD specification is available <xref target="LTD"/>.</t> + + <t>The tests listed below assess the activation of paths in the data + plane, rather than the control plane.</t> + + <t>A complete list of tests with short summaries is available on the + VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t> + + <section title="Speed of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressLearningRate</t> + + <t>PacketLatency.InitialPacketProcessingLatency</t> + </list></t> + </section> + + <section title="Accuracy of Activation section"> + <t><list style="symbols"> + <t>CPDP.Coupling.Flow.Addition</t> + </list></t> + </section> + + <section title="Reliability of Activation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.SystemRecoveryTime</t> + + <t>Throughput.RFC2544.ResetTime</t> + </list></t> + </section> + + <section title="Scale of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressCachingCapacity</t> + </list></t> + </section> + + <section title="Speed of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.PacketLossRate</t> + + <t>CPU.RFC2544.0PacketLoss</t> + + <t>Throughput.RFC2544.PacketLossRateFrameModification</t> + + <t>Throughput.RFC2544.BackToBackFrames</t> + + <t>Throughput.RFC2889.MaxForwardingRate</t> + + <t>Throughput.RFC2889.ForwardPressure</t> + + <t>Throughput.RFC2889.BroadcastFrameForwarding</t> + </list></t> + </section> + + <section title="Accuracy of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.ErrorFramesFiltering</t> + + <t>Throughput.RFC2544.Profile</t> + </list></t> + </section> + + <section title="Reliability of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.Soak</t> + + <t>Throughput.RFC2889.SoakFrameModification</t> + + <t>PacketDelayVariation.RFC3393.Soak</t> + </list></t> + </section> + + <section title="Scalability of Operation"> + <t><list style="symbols"> + <t>Scalability.RFC2544.0PacketLoss</t> + + <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t> + </list></t> + </section> + + <section title="Summary"> + <t><figure> + <artwork><![CDATA[|------------------------------------------------------------------------| +| | | | | | +| | SPEED | ACCURACY | RELIABILITY | SCALE | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Activation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Operation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| De-activation | | | | | +| | | | | | +|------------------------------------------------------------------------|]]></artwork> + </figure></t> + </section> + </section> + + <section title="Security Considerations"> + <t>Benchmarking activities as described in this memo are limited to + technology characterization of a Device Under Test/System Under Test + (DUT/SUT) using controlled stimuli in a laboratory environment, with + dedicated address space and the constraints specified in the sections + above.</t> + + <t>The benchmarking network topology will be an independent test setup + and MUST NOT be connected to devices that may forward the test traffic + into a production network, or misroute traffic to the test management + network.</t> + + <t>Further, benchmarking is performed on a "black-box" basis, relying + solely on measurements observable external to the DUT/SUT.</t> + + <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for + benchmarking purposes. Any implications for network security arising + from the DUT/SUT SHOULD be identical in the lab and in production + networks.</t> + </section> + + <section anchor="IANA" title="IANA Considerations"> + <t>No IANA Action is requested at this time.</t> + </section> + + <section title="Acknowledgements"> + <t>The authors appreciate and acknowledge comments from Scott Bradner, + Marius Georgescu, Ramki Krishnan, and Doug Montgomery, and others for + their reviews.</t> + </section> + </middle> + + <back> + <references title="Normative References"> + <?rfc ?> + + <?rfc include="reference.RFC.2119"?> + + <?rfc ?> + + <?rfc include="reference.RFC.2330"?> + + <?rfc include='reference.RFC.2544'?> + + <?rfc include="reference.RFC.2679"?> + + <?rfc include='reference.RFC.2680'?> + + <?rfc include='reference.RFC.3393'?> + + <?rfc include='reference.RFC.3432'?> + + <?rfc include='reference.RFC.2681'?> + + <?rfc include='reference.RFC.5905'?> + + <?rfc include='reference.RFC.4689'?> + + <?rfc include='reference.RFC.4737'?> + + <?rfc include='reference.RFC.5357'?> + + <?rfc include='reference.RFC.2889'?> + + <?rfc include='reference.RFC.3918'?> + + <?rfc include='reference.RFC.6201'?> + + <?rfc include='reference.RFC.2285'?> + + <reference anchor="NFV.PER001"> + <front> + <title>Network Function Virtualization: Performance and Portability + Best Practices</title> + + <author fullname="ETSI NFV" initials="" surname=""> + <organization/> + </author> + + <date month="June" year="2014"/> + </front> + + <seriesInfo name="Group Specification" + value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/> + + <format type="PDF"/> + </reference> + </references> + + <references title="Informative References"> + <?rfc include='reference.RFC.1242'?> + + <?rfc include='reference.RFC.5481'?> + + <?rfc include='reference.RFC.6049'?> + + <?rfc include='reference.RFC.6248'?> + + <?rfc include='reference.RFC.6390'?> + + <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?> + + <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?> + + <reference anchor="TestTopo"> + <front> + <title>Test Topologies + https://wiki.opnfv.org/vsperf/test_methodology</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTDoverV"> + <front> + <title>LTD Test Spec Overview + https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTD"> + <front> + <title>LTD Test Specification + http://artifacts.opnfv.org/vswitchperf/docs/requirements/index.html</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="BrahRel"> + <front> + <title>Brahmaputra, Second OPNFV Release + https://www.opnfv.org/brahmaputra</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="IFA003"> + <front> + <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + </references> + </back> +</rfc> diff --git a/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-02.xml b/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-02.xml new file mode 100644 index 00000000..9157763e --- /dev/null +++ b/docs/testing/developer/requirements/ietf_draft/draft-vsperf-bmwg-vswitch-opnfv-02.xml @@ -0,0 +1,1016 @@ +<?xml version="1.0" encoding="US-ASCII"?> +<!DOCTYPE rfc SYSTEM "rfc2629.dtd"> +<?rfc toc="yes"?> +<?rfc tocompact="yes"?> +<?rfc tocdepth="3"?> +<?rfc tocindent="yes"?> +<?rfc symrefs="yes"?> +<?rfc sortrefs="yes"?> +<?rfc comments="yes"?> +<?rfc inline="yes"?> +<?rfc compact="yes"?> +<?rfc subcompact="no"?> +<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-02" + ipr="trust200902"> + <front> + <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in + OPNFV</title> + + <author fullname="Maryam Tahhan" initials="M." surname="Tahhan"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>maryam.tahhan@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Billy O'Mahony" initials="B." surname="O'Mahony"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email>billy.o.mahony@intel.com</email> + + <uri/> + </address> + </author> + + <author fullname="Al Morton" initials="A." surname="Morton"> + <organization>AT&T Labs</organization> + + <address> + <postal> + <street>200 Laurel Avenue South</street> + + <city>Middletown,</city> + + <region>NJ</region> + + <code>07748</code> + + <country>USA</country> + </postal> + + <phone>+1 732 420 1571</phone> + + <facsimile>+1 732 368 1192</facsimile> + + <email>acmorton@att.com</email> + + <uri>http://home.comcast.net/~acmacm/</uri> + </address> + </author> + + <date day="21" month="March" year="2016"/> + + <abstract> + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance "VSWITCHPERF". This project + intends to build on the current and completed work of the Benchmarking + Methodology Working Group in IETF, by referencing existing literature. + The Benchmarking Methodology Working Group has traditionally conducted + laboratory characterization of dedicated physical implementations of + internetworking functions. Therefore, this memo begins to describe the + additional considerations when virtual switches are implemented in + general-purpose hardware. The expanded tests and benchmarks are also + influenced by the OPNFV mission to support virtualization of the "telco" + infrastructure.</t> + </abstract> + + <note title="Requirements Language"> + <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", + "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this + document are to be interpreted as described in <xref + target="RFC2119">RFC 2119</xref>.</t> + + <t/> + </note> + </front> + + <middle> + <section title="Introduction"> + <t>Benchmarking Methodology Working Group (BMWG) has traditionally + conducted laboratory characterization of dedicated physical + implementations of internetworking functions. The Black-box Benchmarks + of Throughput, Latency, Forwarding Rates and others have served our + industry for many years. Now, Network Function Virtualization (NFV) has + the goal to transform how internetwork functions are implemented, and + therefore has garnered much attention.</t> + + <t>This memo summarizes the progress of the Open Platform for NFV + (OPNFV) project on virtual switch performance characterization, + "VSWITCHPERF", through the Brahmaputra (second) release <xref + target="BrahRel"/>. This project intends to build on the current and + completed work of the Benchmarking Methodology Working Group in IETF, by + referencing existing literature. For example, currently the most often + referenced RFC is <xref target="RFC2544"/> (which depends on <xref + target="RFC1242"/>) and foundation of the benchmarking work in OPNFV is + common and strong.</t> + + <t>See + https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases + for more background, and the OPNFV website for general information: + https://www.opnfv.org/</t> + + <t>The authors note that OPNFV distinguishes itself from other open + source compute and networking projects through its emphasis on existing + "telco" services as opposed to cloud-computing. There are many ways in + which telco requirements have different emphasis on performance + dimensions when compared to cloud computing: support for and transfer of + isochronous media streams is one example.</t> + + <t>Note also that the move to NFV Infrastructure has resulted in many + new benchmarking initiatives across the industry. The authors are + currently doing their best to maintain alignment with many other + projects, and this Internet Draft is one part of the efforts. We + acknowledge the early work in <xref + target="I-D.huang-bmwg-virtual-network-performance"/>, and useful + discussion with the authors.</t> + </section> + + <section title="Scope"> + <t>The primary purpose and scope of the memo is to inform the industry + of work-in-progress that builds on the body of extensive BMWG literature + and experience, and describe the extensions needed for benchmarking + virtual switches. Inital feedback indicates that many of these + extensions may be applicable beyond the current scope (to hardware + switches in the NFV Infrastructure and to virtual routers, for example). + Additionally, this memo serves as a vehicle to include more detail and + commentary from BMWG and other Open Source communities, under BMWG's + chartered work to characterize the NFV Infrastructure (a virtual switch + is an important aspect of that infrastructure).</t> + </section> + + <section title="Benchmarking Considerations"> + <t>This section highlights some specific considerations (from <xref + target="I-D.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual + switches. The OPNFV project is sharing its present view on these areas, + as they develop their specifications in the Level Test Design (LTD) + document.</t> + + <section title="Comparison with Physical Network Functions"> + <t>To compare the performance of virtual designs and implementations + with their physical counterparts, identical benchmarks are needed. + BMWG has developed specifications for many network functions this memo + re-uses existing benchmarks through references, and expands them + during development of new methods. A key configuration aspect is the + number of parallel cores required to achieve comparable performance + with a given physical device, or whether some limit of scale was + reached before the cores could achieve the comparable level.</t> + + <t>It's unlikely that the virtual switch will be the only application + running on the SUT, so CPU utilization, Cache utilization, and Memory + footprint should also be recorded for the virtual implementations of + internetworking functions.</t> + </section> + + <section title="Continued Emphasis on Black-Box Benchmarks"> + <t>External observations remain essential as the basis for Benchmarks. + Internal observations with fixed specification and interpretation will + be provided in parallel to assist the development of operations + procedures when the technology is deployed.</t> + </section> + + <section title="New Configuration Parameters"> + <t>A key consideration when conducting any sort of benchmark is trying + to ensure the consistency and repeatability of test results. When + benchmarking the performance of a vSwitch there are many factors that + can affect the consistency of results, one key factor is matching the + various hardware and software details of the SUT. This section lists + some of the many new parameters which this project believes are + critical to report in order to achieve repeatability.</t> + + <t>Hardware details including:</t> + + <t><list style="symbols"> + <t>Platform details</t> + + <t>Processor details</t> + + <t>Memory information (type and size)</t> + + <t>Number of enabled cores</t> + + <t>Number of cores used for the test</t> + + <t>Number of physical NICs, as well as their details + (manufacturer, versions, type and the PCI slot they are plugged + into)</t> + + <t>NIC interrupt configuration</t> + + <t>BIOS version, release date and any configurations that were + modified</t> + + <t>CPU microcode level</t> + + <t>Memory DIMM configurations (quad rank performance may not be + the same as dual rank) in size, freq and slot locations</t> + + <t>PCI configuration parameters (payload size, early ack + option...)</t> + + <t>Power management at all levels (ACPI sleep states, processor + package, OS...)</t> + </list>Software details including:</t> + + <t><list style="symbols"> + <t>OS parameters and behavior (text vs graphical no one typing at + the console on one system)</t> + + <t>OS version (for host and VNF)</t> + + <t>Kernel version (for host and VNF)</t> + + <t>GRUB boot parameters (for host and VNF)</t> + + <t>Hypervisor details (Type and version)</t> + + <t>Selected vSwitch, version number or commit id used</t> + + <t>vSwitch launch command line if it has been parameterised</t> + + <t>Memory allocation to the vSwitch</t> + + <t>which NUMA node it is using, and how many memory channels</t> + + <t>DPDK or any other SW dependency version number or commit id + used</t> + + <t>Memory allocation to a VM - if it's from Hugpages/elsewhere</t> + + <t>VM storage type: snapshot/independent persistent/independent + non-persistent</t> + + <t>Number of VMs</t> + + <t>Number of Virtual NICs (vNICs), versions, type and driver</t> + + <t>Number of virtual CPUs and their core affinity on the host</t> + + <t>Number vNIC interrupt configuration</t> + + <t>Thread affinitization for the applications (including the + vSwitch itself) on the host</t> + + <t>Details of Resource isolation, such as CPUs designated for + Host/Kernel (isolcpu) and CPUs designated for specific processes + (taskset). - Test duration. - Number of flows.</t> + </list></t> + + <t>Test Traffic Information:<list style="symbols"> + <t>Traffic type - UDP, TCP, IMIX / Other</t> + + <t>Packet Sizes</t> + + <t>Deployment Scenario</t> + </list></t> + + <t/> + </section> + + <section title="Flow classification"> + <t>Virtual switches group packets into flows by processing and + matching particular packet or frame header information, or by matching + packets based on the input ports. Thus a flow can be thought of a + sequence of packets that have the same set of header field values or + have arrived on the same port. Performance results can vary based on + the parameters the vSwitch uses to match for a flow. The recommended + flow classification parameters for any vSwitch performance tests are: + the input port, the source IP address, the destination IP address and + the Ethernet protocol type field. It is essential to increase the flow + timeout time on a vSwitch before conducting any performance tests that + do not measure the flow setup time. Normally the first packet of a + particular stream will install the flow in the virtual switch which + adds an additional latency, subsequent packets of the same flow are + not subject to this latency if the flow is already installed on the + vSwitch.</t> + </section> + + <section title="Benchmarks using Baselines with Resource Isolation"> + <t>This outline describes measurement of baseline with isolated + resources at a high level, which is the intended approach at this + time.</t> + + <t><list style="numbers"> + <t>Baselines: <list style="symbols"> + <t>Optional: Benchmark platform forwarding capability without + a vswitch or VNF for at least 72 hours (serves as a means of + platform validation and a means to obtain the base performance + for the platform in terms of its maximum forwarding rate and + latency). <figure> + <preamble>Benchmark platform forwarding + capability</preamble> + + <artwork align="right"><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | Simple Forwarding App | | Host + | | | | | + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmark VNF forwarding capability with direct + connectivity (vSwitch bypass, e.g., SR/IOV) for at least 72 + hours (serves as a means of VNF validation and a means to + obtain the base performance for the VNF in terms of its + maximum forwarding rate and latency). The metrics gathered + from this test will serve as a key comparison point for + vSwitch bypass technologies performance and vSwitch + performance. <figure align="right"> + <preamble>Benchmark VNF forwarding capability</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | VNF | | | + | | | | | + | +------------------------------------------+ | | + | | Passthrough/SR-IOV | | Host + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + + <postamble/> + </figure></t> + + <t>Benchmarking with isolated resources alone, with other + resources (both HW&SW) disabled Example, vSw and VM are + SUT</t> + + <t>Benchmarking with isolated resources alone, leaving some + resources unused</t> + + <t>Benchmark with isolated resources and all resources + occupied</t> + </list></t> + + <t>Next Steps<list style="symbols"> + <t>Limited sharing</t> + + <t>Production scenarios</t> + + <t>Stressful scenarios</t> + </list></t> + </list></t> + </section> + </section> + + <section title="VSWITCHPERF Specification Summary"> + <t>The overall specification in preparation is referred to as a Level + Test Design (LTD) document, which will contain a suite of performance + tests. The base performance tests in the LTD are based on the + pre-existing specifications developed by BMWG to test the performance of + physical switches. These specifications include:</t> + + <t><list style="symbols"> + <t><xref target="RFC2544"/> Benchmarking Methodology for Network + Interconnect Devices</t> + + <t><xref target="RFC2889"/> Benchmarking Methodology for LAN + Switching</t> + + <t><xref target="RFC6201"/> Device Reset Characterization</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t>Some of the above/newer RFCs are being applied in benchmarking for + the first time, and represent a development challenge for test equipment + developers. Fortunately, many members of the testing system community + have engaged on the VSPERF project, including an open source test + system.</t> + + <t>In addition to this, the LTD also re-uses the terminology defined + by:</t> + + <t><list style="symbols"> + <t><xref target="RFC2285"/> Benchmarking Terminology for LAN + Switching Devices</t> + + <t><xref target="RFC5481"/> Packet Delay Variation Applicability + Statement</t> + </list></t> + + <t/> + + <t>Specifications to be included in future updates of the LTD + include:<list style="symbols"> + <t><xref target="RFC3918"/> Methodology for IP Multicast + Benchmarking</t> + + <t><xref target="RFC4737"/> Packet Reordering Metrics</t> + </list></t> + + <t>As one might expect, the most fundamental internetworking + characteristics of Throughput and Latency remain important when the + switch is virtualized, and these benchmarks figure prominently in the + specification.</t> + + <t>When considering characteristics important to "telco" network + functions, we must begin to consider additional performance metrics. In + this case, the project specifications have referenced metrics from the + IETF IP Performance Metrics (IPPM) literature. This means that the <xref + target="RFC2544"/> test of Latency is replaced by measurement of a + metric derived from IPPM's <xref target="RFC2679"/>, where a set of + statistical summaries will be provided (mean, max, min, etc.). Further + metrics planned to be benchmarked include packet delay variation as + defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT + availability, DUT capacity and packet loss in long term testing at + Throughput level, where some low-level of background loss may be present + and characterized.</t> + + <t>Tests have been (or will be) designed to collect the metrics + below:</t> + + <t><list style="symbols"> + <t>Throughput Tests to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by <xref target="RFC1242"/>) without traffic loss.</t> + + <t>Packet and Frame Delay Distribution Tests to measure average, min + and max packet and frame delay for constant loads.</t> + + <t>Packet Delay Tests to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers.</t> + + <t>Scalability Tests to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic’s configuration… it has to deal with + increases.</t> + + <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the switch.</t> + + <t>Control Path and Datapath Coupling Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT (example: + delay of the initial packet of a flow).</t> + + <t>CPU and Memory Consumption Tests to understand the virtual + switch’s footprint on the system, usually conducted as + auxiliary measurements with benchmarks above. They include: CPU + utilization, Cache utilization and Memory footprint.</t> + + <t>The so-called "Soak" tests, where the selected test is conducted + over a long period of time (with an ideal duration of 24 hours, and + at least 6 hours). The purpose of soak tests is to capture transient + changes in performance which may occur due to infrequent processes + or the low probability coincidence of two or more processes. The + performance must be evaluated periodically during continuous + testing, and this results in use of <xref target="RFC2889"/> Frame + Rate metrics instead of <xref target="RFC2544"/> Throughput (which + requires stopping traffic to allow time for all traffic to exit + internal queues).</t> + </list></t> + + <t>Future/planned test specs include:<list style="symbols"> + <t>Request/Response Performance Tests (TCP, UDP) which measure the + transaction rate through the switch.</t> + + <t>Noisy Neighbour Tests, to understand the effects of resource + sharing on the performance of a virtual switch.</t> + + <t>Tests derived from examination of ETSI NFV Draft GS IFA003 + requirements <xref target="IFA003"/> on characterization of + acceleration technologies applied to vswitches.</t> + </list>The flexibility of deployment of a virtual switch within a + network means that the BMWG IETF existing literature needs to be used to + characterize the performance of a switch in various deployment + scenarios. The deployment scenarios under consideration include:</t> + + <t><figure> + <preamble>Physical port to virtual switch to physical + port</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure></t> + + <t><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ __| + ^ : + | | + : v __ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | |-----------------| v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ __| + ^ + | + : __ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ __| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ __| + : + | + v __ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ __| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | | | | ^ | | + | v | | | | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 | | | | 0 | | | + +---+---------------+--+ +---+---------------+--+__| + : ^ + | | + v : _ + +---+---------------+---------+---------------+--+ | + | | 1 | | 1 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | | ^ | | Host + | L-----------------+ | | + | | | + | vSwitch | | + +------------------------------------------------+_|]]></artwork> + </figure></t> + + <t>A set of Deployment Scenario figures is available on the VSPERF Test + Methodology Wiki page <xref target="TestTopo"/>.</t> + </section> + + <section title="3x3 Matrix Coverage"> + <t>This section organizes the many existing test specifications into the + "3x3" matrix (introduced in <xref target="I-D.ietf-bmwg-virtual-net"/>). + Because the LTD specification ID names are quite long, this section is + organized into lists for each occupied cell of the matrix (not all are + occupied, also the matrix has grown to 3x4 to accommodate scale metrics + when displaying the coverage of many metrics/benchmarks). The current + version of the LTD specification is available <xref target="LTD"/>.</t> + + <t>The tests listed below assess the activation of paths in the data + plane, rather than the control plane.</t> + + <t>A complete list of tests with short summaries is available on the + VSPERF "LTD Test Spec Overview" Wiki page <xref target="LTDoverV"/>.</t> + + <section title="Speed of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressLearningRate</t> + + <t>PacketLatency.InitialPacketProcessingLatency</t> + </list></t> + </section> + + <section title="Accuracy of Activation section"> + <t><list style="symbols"> + <t>CPDP.Coupling.Flow.Addition</t> + </list></t> + </section> + + <section title="Reliability of Activation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.SystemRecoveryTime</t> + + <t>Throughput.RFC2544.ResetTime</t> + </list></t> + </section> + + <section title="Scale of Activation"> + <t><list style="symbols"> + <t>Activation.RFC2889.AddressCachingCapacity</t> + </list></t> + </section> + + <section title="Speed of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2544.PacketLossRate</t> + + <t>CPU.RFC2544.0PacketLoss</t> + + <t>Throughput.RFC2544.PacketLossRateFrameModification</t> + + <t>Throughput.RFC2544.BackToBackFrames</t> + + <t>Throughput.RFC2889.MaxForwardingRate</t> + + <t>Throughput.RFC2889.ForwardPressure</t> + + <t>Throughput.RFC2889.BroadcastFrameForwarding</t> + </list></t> + </section> + + <section title="Accuracy of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.ErrorFramesFiltering</t> + + <t>Throughput.RFC2544.Profile</t> + </list></t> + </section> + + <section title="Reliability of Operation"> + <t><list style="symbols"> + <t>Throughput.RFC2889.Soak</t> + + <t>Throughput.RFC2889.SoakFrameModification</t> + + <t>PacketDelayVariation.RFC3393.Soak</t> + </list></t> + </section> + + <section title="Scalability of Operation"> + <t><list style="symbols"> + <t>Scalability.RFC2544.0PacketLoss</t> + + <t>MemoryBandwidth.RFC2544.0PacketLoss.Scalability</t> + </list></t> + </section> + + <section title="Summary"> + <t><figure> + <artwork><![CDATA[|------------------------------------------------------------------------| +| | | | | | +| | SPEED | ACCURACY | RELIABILITY | SCALE | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Activation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| Operation | X | X | X | X | +| | | | | | +|------------------------------------------------------------------------| +| | | | | | +| De-activation | | | | | +| | | | | | +|------------------------------------------------------------------------|]]></artwork> + </figure></t> + </section> + </section> + + <section title="Security Considerations"> + <t>Benchmarking activities as described in this memo are limited to + technology characterization of a Device Under Test/System Under Test + (DUT/SUT) using controlled stimuli in a laboratory environment, with + dedicated address space and the constraints specified in the sections + above.</t> + + <t>The benchmarking network topology will be an independent test setup + and MUST NOT be connected to devices that may forward the test traffic + into a production network, or misroute traffic to the test management + network.</t> + + <t>Further, benchmarking is performed on a "black-box" basis, relying + solely on measurements observable external to the DUT/SUT.</t> + + <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for + benchmarking purposes. Any implications for network security arising + from the DUT/SUT SHOULD be identical in the lab and in production + networks.</t> + </section> + + <section anchor="IANA" title="IANA Considerations"> + <t>No IANA Action is requested at this time.</t> + </section> + + <section title="Acknowledgements"> + <t>The authors appreciate and acknowledge comments from Scott Bradner, + Marius Georgescu, Ramki Krishnan, Doug Montgomery, Martin Klozik, + Christian Trautman, and others for their reviews.</t> + </section> + </middle> + + <back> + <references title="Normative References"> + <?rfc ?> + + <?rfc include="reference.RFC.2119"?> + + <?rfc ?> + + <?rfc include="reference.RFC.2330"?> + + <?rfc include='reference.RFC.2544'?> + + <?rfc include="reference.RFC.2679"?> + + <?rfc include='reference.RFC.2680'?> + + <?rfc include='reference.RFC.3393'?> + + <?rfc include='reference.RFC.3432'?> + + <?rfc include='reference.RFC.2681'?> + + <?rfc include='reference.RFC.5905'?> + + <?rfc include='reference.RFC.4689'?> + + <?rfc include='reference.RFC.4737'?> + + <?rfc include='reference.RFC.5357'?> + + <?rfc include='reference.RFC.2889'?> + + <?rfc include='reference.RFC.3918'?> + + <?rfc include='reference.RFC.6201'?> + + <?rfc include='reference.RFC.2285'?> + + <reference anchor="NFV.PER001"> + <front> + <title>Network Function Virtualization: Performance and Portability + Best Practices</title> + + <author fullname="ETSI NFV" initials="" surname=""> + <organization/> + </author> + + <date month="June" year="2014"/> + </front> + + <seriesInfo name="Group Specification" + value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/> + + <format type="PDF"/> + </reference> + </references> + + <references title="Informative References"> + <?rfc include='reference.RFC.1242'?> + + <?rfc include='reference.RFC.5481'?> + + <?rfc include='reference.RFC.6049'?> + + <?rfc include='reference.RFC.6248'?> + + <?rfc include='reference.RFC.6390'?> + + <?rfc include='reference.I-D.ietf-bmwg-virtual-net'?> + + <?rfc include='reference.I-D.huang-bmwg-virtual-network-performance'?> + + <reference anchor="TestTopo"> + <front> + <title>Test Topologies + https://wiki.opnfv.org/vsperf/test_methodology</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTDoverV"> + <front> + <title>LTD Test Spec Overview + https://wiki.opnfv.org/wiki/vswitchperf_test_spec_review</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="LTD"> + <front> + <title>LTD Test Specification + http://artifacts.opnfv.org/vswitchperf/docs/requirements/index.html</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="BrahRel"> + <front> + <title>Brahmaputra, Second OPNFV Release + https://www.opnfv.org/brahmaputra</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + + <reference anchor="IFA003"> + <front> + <title>https://docbox.etsi.org/ISG/NFV/Open/Drafts/IFA003_Acceleration_-_vSwitch_Spec/</title> + + <author> + <organization/> + </author> + + <date/> + </front> + </reference> + </references> + </back> +</rfc> diff --git a/docs/testing/developer/requirements/vm2vm_alternative_benchmark.png b/docs/testing/developer/requirements/vm2vm_alternative_benchmark.png Binary files differnew file mode 100644 index 00000000..d21334ba --- /dev/null +++ b/docs/testing/developer/requirements/vm2vm_alternative_benchmark.png diff --git a/docs/testing/developer/requirements/vm2vm_benchmark.png b/docs/testing/developer/requirements/vm2vm_benchmark.png Binary files differnew file mode 100644 index 00000000..3a85e51f --- /dev/null +++ b/docs/testing/developer/requirements/vm2vm_benchmark.png diff --git a/docs/testing/developer/requirements/vm2vm_hypervisor_benchmark.png b/docs/testing/developer/requirements/vm2vm_hypervisor_benchmark.png Binary files differnew file mode 100644 index 00000000..b5b76e8a --- /dev/null +++ b/docs/testing/developer/requirements/vm2vm_hypervisor_benchmark.png diff --git a/docs/testing/developer/requirements/vm2vm_virtual_interface_benchmark.png b/docs/testing/developer/requirements/vm2vm_virtual_interface_benchmark.png Binary files differnew file mode 100644 index 00000000..55294af6 --- /dev/null +++ b/docs/testing/developer/requirements/vm2vm_virtual_interface_benchmark.png diff --git a/docs/testing/developer/requirements/vswitchperf_ltd.rst b/docs/testing/developer/requirements/vswitchperf_ltd.rst new file mode 100644 index 00000000..e1372520 --- /dev/null +++ b/docs/testing/developer/requirements/vswitchperf_ltd.rst @@ -0,0 +1,1712 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +****************************** +VSPERF LEVEL TEST DESIGN (LTD) +****************************** + +.. 3.1 + +============ +Introduction +============ + +The intention of this Level Test Design (LTD) document is to specify the set of +tests to carry out in order to objectively measure the current characteristics +of a virtual switch in the Network Function Virtualization Infrastructure +(NFVI) as well as the test pass criteria. The detailed test cases will be +defined in details-of-LTD_, preceded by the doc-id-of-LTD_ and the scope-of-LTD_. + +This document is currently in draft form. + +.. 3.1.1 + + +.. _doc-id-of-LTD: + +Document identifier +=================== + +The document id will be used to uniquely +identify versions of the LTD. The format for the document id will be: +OPNFV\_vswitchperf\_LTD\_REL\_STATUS, where by the +status is one of: draft, reviewed, corrected or final. The document id +for this version of the LTD is: +OPNFV\_vswitchperf\_LTD\_Brahmaputra\_REVIEWED. + +.. 3.1.2 + +.. _scope-of-LTD: + +Scope +===== + +The main purpose of this project is to specify a suite of +performance tests in order to objectively measure the current packet +transfer characteristics of a virtual switch in the NFVI. The intent of +the project is to facilitate testing of any virtual switch. Thus, a +generic suite of tests shall be developed, with no hard dependencies to +a single implementation. In addition, the test case suite shall be +architecture independent. + +The test cases developed in this project shall not form part of a +separate test framework, all of these tests may be inserted into the +Continuous Integration Test Framework and/or the Platform Functionality +Test Framework - if a vSwitch becomes a standard component of an OPNFV +release. + +.. 3.1.3 + +References +========== + +* `RFC 1242 Benchmarking Terminology for Network Interconnection + Devices <http://www.ietf.org/rfc/rfc1242.txt>`__ +* `RFC 2544 Benchmarking Methodology for Network Interconnect + Devices <http://www.ietf.org/rfc/rfc2544.txt>`__ +* `RFC 2285 Benchmarking Terminology for LAN Switching + Devices <http://www.ietf.org/rfc/rfc2285.txt>`__ +* `RFC 2889 Benchmarking Methodology for LAN Switching + Devices <http://www.ietf.org/rfc/rfc2889.txt>`__ +* `RFC 3918 Methodology for IP Multicast + Benchmarking <http://www.ietf.org/rfc/rfc3918.txt>`__ +* `RFC 4737 Packet Reordering + Metrics <http://www.ietf.org/rfc/rfc4737.txt>`__ +* `RFC 5481 Packet Delay Variation Applicability + Statement <http://www.ietf.org/rfc/rfc5481.txt>`__ +* `RFC 6201 Device Reset + Characterization <http://tools.ietf.org/html/rfc6201>`__ + +.. 3.2 + +.. _details-of-LTD: + +================================ +Details of the Level Test Design +================================ + +This section describes the features to be tested (FeaturesToBeTested-of-LTD_), and +identifies the sets of test cases or scenarios (TestIdentification-of-LTD_). + +.. 3.2.1 + +.. _FeaturesToBeTested-of-LTD: + +Features to be tested +===================== + +Characterizing virtual switches (i.e. Device Under Test (DUT) in this document) +includes measuring the following performance metrics: + +- Throughput +- Packet delay +- Packet delay variation +- Packet loss +- Burst behaviour +- Packet re-ordering +- Packet correctness +- Availability and capacity of the DUT + +.. 3.2.2 + +.. _TestIdentification-of-LTD: + +Test identification +=================== + +.. 3.2.2.1 + +Throughput tests +---------------- + +The following tests aim to determine the maximum forwarding rate that +can be achieved with a virtual switch. The list is not exhaustive but +should indicate the type of tests that should be required. It is +expected that more will be added. + +.. 3.2.2.1.1 + +.. _PacketLossRatio: + +Test ID: LTD.Throughput.RFC2544.PacketLossRatio +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 X% packet loss ratio Throughput and Latency Test + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + This test determines the DUT's maximum forwarding rate with X% traffic + loss for a constant load (fixed length frames at a fixed interval time). + The default loss percentages to be tested are: - X = 0% - X = 10^-7% + + Note: Other values can be tested if required by the user. + + The selected frame sizes are those previously defined under + :ref:`default-test-parameters`. + The test can also be used to determine the average latency of the traffic. + + Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ + test methodology, the test duration will + include a number of trials; each trial should run for a minimum period + of 60 seconds. A binary search methodology must be applied for each + trial to obtain the final result. + + **Expected Result**: At the end of each trial, the presence or absence + of loss determines the modification of offered load for the next trial, + converging on a maximum rate, or + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X% + loss. + The Throughput load is re-used in related + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other + tests. + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The maximum forwarding rate in Frames Per Second (FPS) and Mbps of + the DUT for each frame size with X% packet loss. + - The average latency of the traffic flow when passing through the DUT + (if testing for latency, note that this average is different from the + test specified in Section 26.3 of + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__). + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + +.. 3.2.2.1.2 + +.. _PacketLossRatioFrameModification: + +Test ID: LTD.Throughput.RFC2544.PacketLossRatioFrameModification +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 X% packet loss Throughput and Latency Test with + packet modification + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + This test determines the DUT's maximum forwarding rate with X% traffic + loss for a constant load (fixed length frames at a fixed interval time). + The default loss percentages to be tested are: - X = 0% - X = 10^-7% + + Note: Other values can be tested if required by the user. + + The selected frame sizes are those previously defined under + :ref:`default-test-parameters`. + The test can also be used to determine the average latency of the traffic. + + Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ + test methodology, the test duration will + include a number of trials; each trial should run for a minimum period + of 60 seconds. A binary search methodology must be applied for each + trial to obtain the final result. + + During this test, the DUT must perform the following operations on the + traffic flow: + + - Perform packet parsing on the DUT's ingress port. + - Perform any relevant address look-ups on the DUT's ingress ports. + - Modify the packet header before forwarding the packet to the DUT's + egress port. Packet modifications include: + + - Modifying the Ethernet source or destination MAC address. + - Modifying/adding a VLAN tag. (**Recommended**). + - Modifying/adding a MPLS tag. + - Modifying the source or destination ip address. + - Modifying the TOS/DSCP field. + - Modifying the source or destination ports for UDP/TCP/SCTP. + - Modifying the TTL. + + **Expected Result**: The Packet parsing/modifications require some + additional degree of processing resource, therefore the + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ + Throughput is expected to be somewhat lower than the Throughput level + measured without additional steps. The reduction is expected to be + greatest on tests with the smallest packet sizes (greatest header + processing rates). + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The maximum forwarding rate in Frames Per Second (FPS) and Mbps of + the DUT for each frame size with X% packet loss and packet + modification operations being performed by the DUT. + - The average latency of the traffic flow when passing through the DUT + (if testing for latency, note that this average is different from the + test specified in Section 26.3 of + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__). + - The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__ + PDV form of delay variation on the traffic flow, + using the 99th percentile. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + +.. 3.2.2.1.3 + +Test ID: LTD.Throughput.RFC2544.Profile +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 Throughput and Latency Profile + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + This test reveals how throughput and latency degrades as the offered + rate varies in the region of the DUT's maximum forwarding rate as + determined by LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss). + For example it can be used to determine if the degradation of throughput + and latency as the offered rate increases is slow and graceful or sudden + and severe. + + The selected frame sizes are those previously defined under + :ref:`default-test-parameters`. + + The offered traffic rate is described as a percentage delta with respect + to the DUT's RFC 2544 Throughput as determined by + LTD.Throughput.RFC2544.PacketLoss Ratio (0% Packet Loss case). A delta + of 0% is equivalent to an offered traffic rate equal to the RFC 2544 + Maximum Throughput; A delta of +50% indicates an offered rate half-way + between the Maximum RFC2544 Throughput and line-rate, whereas a delta of + -50% indicates an offered rate of half the RFC 2544 Maximum Throughput. + Therefore the range of the delta figure is natuarlly bounded at -100% + (zero offered traffic) and +100% (traffic offered at line rate). + + The following deltas to the maximum forwarding rate should be applied: + + - -50%, -10%, 0%, +10% & +50% + + **Expected Result**: For each packet size a profile should be produced + of how throughput and latency vary with offered rate. + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The forwarding rate in Frames Per Second (FPS) and Mbps of the DUT + for each delta to the maximum forwarding rate and for each frame + size. + - The average latency for each delta to the maximum forwarding rate and + for each frame size. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + - Any failures experienced (for example if the vSwitch crashes, stops + processing packets, restarts or becomes unresponsive to commands) + when the offered load is above Maximum Throughput MUST be recorded + and reported with the results. + +.. 3.2.2.1.4 + +Test ID: LTD.Throughput.RFC2544.SystemRecoveryTime +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 System Recovery Time Test + + **Prerequisite Test** LTD.Throughput.RFC2544.PacketLossRatio + + **Priority**: + + **Description**: + + The aim of this test is to determine the length of time it takes the DUT + to recover from an overload condition for a constant load (fixed length + frames at a fixed interval time). The selected frame sizes are those + previously defined under :ref:`default-test-parameters`, + traffic should be sent to the DUT under normal conditions. During the + duration of the test and while the traffic flows are passing though the + DUT, at least one situation leading to an overload condition for the DUT + should occur. The time from the end of the overload condition to when + the DUT returns to normal operations should be measured to determine + recovery time. Prior to overloading the DUT, one should record the + average latency for 10,000 packets forwarded through the DUT. + + The overload condition SHOULD be to transmit traffic at a very high + frame rate to the DUT (150% of the maximum 0% packet loss rate as + determined by LTD.Throughput.RFC2544.PacketLossRatio or line-rate + whichever is lower), for at least 60 seconds, then reduce the frame rate + to 75% of the maximum 0% packet loss rate. A number of time-stamps + should be recorded: - Record the time-stamp at which the frame rate was + reduced and record a second time-stamp at the time of the last frame + lost. The recovery time is the difference between the two timestamps. - + Record the average latency for 10,000 frames after the last frame loss + and continue to record average latency measurements for every 10,000 + frames, when latency returns to within 10% of pre-overload levels record + the time-stamp. + + **Expected Result**: + + **Metrics collected** + + The following are the metrics collected for this test: + + - The length of time it takes the DUT to recover from an overload + condition. + - The length of time it takes the DUT to recover the average latency to + pre-overload conditions. + + **Deployment scenario**: + + - Physical → virtual switch → physical. + +.. 3.2.2.1.5 + +.. _BackToBackFrames: + +Test ID: LTD.Throughput.RFC2544.BackToBackFrames +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2544 Back To Back Frames Test + + **Prerequisite Test**: N + + **Priority**: + + **Description**: + + The aim of this test is to characterize the ability of the DUT to + process back-to-back frames. For each frame size previously defined + under :ref:`default-test-parameters`, a burst of traffic + is sent to the DUT with the minimum inter-frame gap between each frame. + If the number of received frames equals the number of frames that were + transmitted, the burst size should be increased and traffic is sent to + the DUT again. The value measured is the back-to-back value, that is the + maximum burst size the DUT can handle without any frame loss. Please note + a trial must run for a minimum of 2 seconds and should be repeated 50 + times (at a minimum). + + **Expected Result**: + + Tests of back-to-back frames with physical devices have produced + unstable results in some cases. All tests should be repeated in multiple + test sessions and results stability should be examined. + + **Metrics collected** + + The following are the metrics collected for this test: + + - The average back-to-back value across the trials, which is + the number of frames in the longest burst that the DUT will + handle without the loss of any frames. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + + **Deployment scenario**: + + - Physical → virtual switch → physical. + +.. 3.2.2.1.6 + +Test ID: LTD.Throughput.RFC2889.MaxForwardingRateSoak +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2889 X% packet loss Max Forwarding Rate Soak Test + + **Prerequisite Test** LTD.Throughput.RFC2544.PacketLossRatio + + **Priority**: + + **Description**: + + The aim of this test is to understand the Max Forwarding Rate stability + over an extended test duration in order to uncover any outliers. To allow + for an extended test duration, the test should ideally run for 24 hours + or, if this is not possible, for at least 6 hours. For this test, each frame + size must be sent at the highest Throughput rate with X% packet loss, as + determined in the prerequisite test. The default loss percentages to be + tested are: - X = 0% - X = 10^-7% + + Note: Other values can be tested if required by the user. + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - Max Forwarding Rate stability of the DUT. + + - This means reporting the number of packets lost per time interval + and reporting any time intervals with packet loss. The + `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__ + Forwarding Rate shall be measured in each interval. + An interval of 60s is suggested. + + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + - The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__ + PDV form of delay variation on the traffic flow, + using the 99th percentile. + +.. 3.2.2.1.7 + +Test ID: LTD.Throughput.RFC2889.MaxForwardingRateSoakFrameModification +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2889 Max Forwarding Rate Soak Test with Frame Modification + + **Prerequisite Test**: + LTD.Throughput.RFC2544.PacketLossRatioFrameModification (0% Packet Loss) + + **Priority**: + + **Description**: + + The aim of this test is to understand the Max Forwarding Rate stability over an + extended test duration in order to uncover any outliers. To allow for an + extended test duration, the test should ideally run for 24 hours or, if + this is not possible, for at least 6 hour. For this test, each frame + size must be sent at the highest Throughput rate with 0% packet loss, as + determined in the prerequisite test. + + During this test, the DUT must perform the following operations on the + traffic flow: + + - Perform packet parsing on the DUT's ingress port. + - Perform any relevant address look-ups on the DUT's ingress ports. + - Modify the packet header before forwarding the packet to the DUT's + egress port. Packet modifications include: + + - Modifying the Ethernet source or destination MAC address. + - Modifying/adding a VLAN tag (**Recommended**). + - Modifying/adding a MPLS tag. + - Modifying the source or destination ip address. + - Modifying the TOS/DSCP field. + - Modifying the source or destination ports for UDP/TCP/SCTP. + - Modifying the TTL. + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - Max Forwarding Rate stability of the DUT. + + - This means reporting the number of packets lost per time interval + and reporting any time intervals with packet loss. The + `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__ + Forwarding Rate shall be measured in each interval. + An interval of 60s is suggested. + + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + - The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__ + PDV form of delay variation on the traffic flow, using the 99th + percentile. + +.. 3.2.2.1.8 + +Test ID: LTD.Throughput.RFC6201.ResetTime +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 6201 Reset Time Test + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + The aim of this test is to determine the length of time it takes the DUT + to recover from a reset. + + Two reset methods are defined - planned and unplanned. A planned reset + requires stopping and restarting the virtual switch by the usual + 'graceful' method defined by it's documentation. An unplanned reset + requires simulating a fatal internal fault in the virtual switch - for + example by using kill -SIGKILL on a Linux environment. + + Both reset methods SHOULD be exercised. + + For each frame size previously defined under :ref:`default-test-parameters`, + traffic should be sent to the DUT under + normal conditions. During the duration of the test and while the traffic + flows are passing through the DUT, the DUT should be reset and the Reset + time measured. The Reset time is the total time that a device is + determined to be out of operation and includes the time to perform the + reset and the time to recover from it (cf. `RFC6201 + <https://www.rfc-editor.org/rfc/rfc6201.txt>`__). + + `RFC6201 <https://www.rfc-editor.org/rfc/rfc6201.txt>`__ defines two methods + to measure the Reset time: + + - Frame-Loss Method: which requires the monitoring of the number of + lost frames and calculates the Reset time based on the number of + frames lost and the offered rate according to the following + formula: + + .. code-block:: console + + Frames_lost (packets) + Reset_time = ------------------------------------- + Offered_rate (packets per second) + + - Timestamp Method: which measures the time from which the last frame + is forwarded from the DUT to the time the first frame is forwarded + after the reset. This involves time-stamping all transmitted frames + and recording the timestamp of the last frame that was received prior + to the reset and also measuring the timestamp of the first frame that + is received after the reset. The Reset time is the difference between + these two timestamps. + + According to `RFC6201 <https://www.rfc-editor.org/rfc/rfc6201.txt>`__ the + choice of method depends on the test tool's capability; the Frame-Loss + method SHOULD be used if the test tool supports: + + * Counting the number of lost frames per stream. + * Transmitting test frame despite the physical link status. + + whereas the Timestamp method SHOULD be used if the test tool supports: + + * Timestamping each frame. + * Monitoring received frame's timestamp. + * Transmitting frames only if the physical link status is up. + + **Expected Result**: + + **Metrics collected** + + The following are the metrics collected for this test: + + * Average Reset Time over the number of trials performed. + + Results of this test should include the following information: + + * The reset method used. + * Throughput in Fps and Mbps. + * Average Frame Loss over the number of trials performed. + * Average Reset Time in milliseconds over the number of trials performed. + * Number of trials performed. + * Protocol: IPv4, IPv6, MPLS, etc. + * Frame Size in Octets + * Port Media: Ethernet, Gigabit Ethernet (GbE), etc. + * Port Speed: 10 Gbps, 40 Gbps etc. + * Interface Encapsulation: Ethernet, Ethernet VLAN, etc. + + **Deployment scenario**: + + * Physical → virtual switch → physical. + +.. 3.2.2.1.9 + +Test ID: LTD.Throughput.RFC2889.MaxForwardingRate +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2889 Forwarding Rate Test + + **Prerequisite Test**: LTD.Throughput.RFC2544.PacketLossRatio + + **Priority**: + + **Description**: + + This test measures the DUT's Max Forwarding Rate when the Offered Load + is varied between the throughput and the Maximum Offered Load for fixed + length frames at a fixed time interval. The selected frame sizes are + those previously defined under :ref:`default-test-parameters`. + The throughput is the maximum offered + load with 0% frame loss (measured by the prerequisite test), and the + Maximum Offered Load (as defined by + `RFC2285 <https://www.rfc-editor.org/rfc/rfc2285.txt>`__) is *"the highest + number of frames per second that an external source can transmit to a + DUT/SUT for forwarding to a specified output interface or interfaces"*. + + Traffic should be sent to the DUT at a particular rate (TX rate) + starting with TX rate equal to the throughput rate. The rate of + successfully received frames at the destination counted (in FPS). If the + RX rate is equal to the TX rate, the TX rate should be increased by a + fixed step size and the RX rate measured again until the Max Forwarding + Rate is found. + + The trial duration for each iteration should last for the period of time + needed for the system to reach steady state for the frame size being + tested. Under `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__ + (Sec. 5.6.3.1) test methodology, the test + duration should run for a minimum period of 30 seconds, regardless + whether the system reaches steady state before the minimum duration + ends. + + **Expected Result**: According to + `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__ The Max Forwarding + Rate is the highest forwarding rate of a DUT taken from an iterative set of + forwarding rate measurements. The iterative set of forwarding rate measurements + are made by setting the intended load transmitted from an external source and + measuring the offered load (i.e what the DUT is capable of forwarding). If the + Throughput == the Maximum Offered Load, it follows that Max Forwarding Rate is + equal to the Maximum Offered Load. + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The Max Forwarding Rate for the DUT for each packet size. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + + **Deployment scenario**: + + - Physical → virtual switch → physical. Note: Full mesh tests with + multiple ingress and egress ports are a key aspect of RFC 2889 + benchmarks, and scenarios with both 2 and 4 ports should be tested. + In any case, the number of ports used must be reported. + +.. 3.2.2.1.10 + +Test ID: LTD.Throughput.RFC2889.ForwardPressure +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2889 Forward Pressure Test + + **Prerequisite Test**: LTD.Throughput.RFC2889.MaxForwardingRate + + **Priority**: + + **Description**: + + The aim of this test is to determine if the DUT transmits frames with an + inter-frame gap that is less than 12 bytes. This test overloads the DUT + and measures the output for forward pressure. Traffic should be + transmitted to the DUT with an inter-frame gap of 11 bytes, this will + overload the DUT by 1 byte per frame. The forwarding rate of the DUT + should be measured. + + **Expected Result**: The forwarding rate should not exceed the maximum + forwarding rate of the DUT collected by + LTD.Throughput.RFC2889.MaxForwardingRate. + + **Metrics collected** + + The following are the metrics collected for this test: + + - Forwarding rate of the DUT in FPS or Mbps. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + + **Deployment scenario**: + + - Physical → virtual switch → physical. + +.. 3.2.2.1.11 + +Test ID: LTD.Throughput.RFC2889.ErrorFramesFiltering +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2889 Error Frames Filtering Test + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + The aim of this test is to determine whether the DUT will propagate any + erroneous frames it receives or whether it is capable of filtering out + the erroneous frames. Traffic should be sent with erroneous frames + included within the flow at random intervals. Illegal frames that must + be tested include: - Oversize Frames. - Undersize Frames. - CRC Errored + Frames. - Dribble Bit Errored Frames - Alignment Errored Frames + + The traffic flow exiting the DUT should be recorded and checked to + determine if the erroneous frames where passed through the DUT. + + **Expected Result**: Broken frames are not passed! + + **Metrics collected** + + No Metrics are collected in this test, instead it determines: + + - Whether the DUT will propagate erroneous frames. + - Or whether the DUT will correctly filter out any erroneous frames + from traffic flow with out removing correct frames. + + **Deployment scenario**: + + - Physical → virtual switch → physical. + +.. 3.2.2.1.12 + +Test ID: LTD.Throughput.RFC2889.BroadcastFrameForwarding +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2889 Broadcast Frame Forwarding Test + + **Prerequisite Test**: N + + **Priority**: + + **Description**: + + The aim of this test is to determine the maximum forwarding rate of the + DUT when forwarding broadcast traffic. For each frame previously defined + under :ref:`default-test-parameters`, the traffic should + be set up as broadcast traffic. The traffic throughput of the DUT should + be measured. + + The test should be conducted with at least 4 physical ports on the DUT. + The number of ports used MUST be recorded. + + As broadcast involves forwarding a single incoming packet to several + destinations, the latency of a single packet is defined as the average + of the latencies for each of the broadcast destinations. + + The incoming packet is transmitted on each of the other physical ports, + it is not transmitted on the port on which it was received. The test MAY + be conducted using different broadcasting ports to uncover any + performance differences. + + **Expected Result**: + + **Metrics collected**: + + The following are the metrics collected for this test: + + - The forwarding rate of the DUT when forwarding broadcast traffic. + - The minimum, average & maximum packets latencies observed. + + **Deployment scenario**: + + - Physical → virtual switch 3x physical. In the Broadcast rate testing, + four test ports are required. One of the ports is connected to the test + device, so it can send broadcast frames and listen for miss-routed frames. + +.. 3.2.2.1.13 + +Test ID: LTD.Throughput.RFC2544.WorstN-BestN +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: Modified RFC 2544 X% packet loss ratio Throughput and Latency Test + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + This test determines the DUT's maximum forwarding rate with X% traffic + loss for a constant load (fixed length frames at a fixed interval time). + The default loss percentages to be tested are: X = 0%, X = 10^-7% + + Modified RFC 2544 throughput benchmarking methodology aims to quantify + the throughput measurement variations observed during standard RFC 2544 + benchmarking measurements of virtual switches and VNFs. The RFC2544 + binary search algorithm is modified to use more samples per test trial + to drive the binary search and yield statistically more meaningful + results. This keeps the heart of the RFC2544 methodology, still relying + on the binary search of throughput at specified loss tolerance, while + providing more useful information about the range of results seen in + testing. Instead of using a single traffic trial per iteration step, + each traffic trial is repeated N times and the success/failure of the + iteration step is based on these N traffic trials. Two types of revised + tests are defined - *Worst-of-N* and *Best-of-N*. + + **Worst-of-N** + + *Worst-of-N* indicates the lowest expected maximum throughput for ( + packet size, loss tolerance) when repeating the test. + + 1. Repeat the same test run N times at a set packet rate, record each + result. + 2. Take the WORST result (highest packet loss) out of N result samples, + called the Worst-of-N sample. + 3. If Worst-of-N sample has loss less than the set loss tolerance, then + the step is successful - increase the test traffic rate. + 4. If Worst-of-N sample has loss greater than the set loss tolerance + then the step failed - decrease the test traffic rate. + 5. Go to step 1. + + **Best-of-N** + + *Best-of-N* indicates the highest expected maximum throughput for ( + packet size, loss tolerance) when repeating the test. + + 1. Repeat the same traffic run N times at a set packet rate, record + each result. + 2. Take the BEST result (least packet loss) out of N result samples, + called the Best-of-N sample. + 3. If Best-of-N sample has loss less than the set loss tolerance, then + the step is successful - increase the test traffic rate. + 4. If Best-of-N sample has loss greater than the set loss tolerance, + then the step failed - decrease the test traffic rate. + 5. Go to step 1. + + Performing both Worst-of-N and Best-of-N benchmark tests yields lower + and upper bounds of expected maximum throughput under the operating + conditions, giving a very good indication to the user of the + deterministic performance range for the tested setup. + + **Expected Result**: At the end of each trial series, the presence or + absence of loss determines the modification of offered load for the + next trial series, converging on a maximum rate, or + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput + with X% loss. + The Throughput load is re-used in related + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other + tests. + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The maximum forwarding rate in Frames Per Second (FPS) and Mbps of + the DUT for each frame size with X% packet loss. + - The average latency of the traffic flow when passing through the DUT + (if testing for latency, note that this average is different from the + test specified in Section 26.3 of + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__). + - Following may also be collected as part of this test, to determine + the vSwitch's performance footprint on the system: + + - CPU core utilization. + - CPU cache utilization. + - Memory footprint. + - System bus (QPI, PCI, ...) utilization. + - CPU cycles consumed per packet. + +.. 3.2.2.1.14 + +Test ID: LTD.Throughput.Overlay.Network.<tech>.RFC2544.PacketLossRatio +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: <tech> Overlay Network RFC 2544 X% packet loss ratio Throughput and Latency Test + + + NOTE: Throughout this test, four interchangeable overlay technologies are covered by the + same test description. They are: VXLAN, GRE, NVGRE and GENEVE. + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + This test evaluates standard switch performance benchmarks for the scenario where an + Overlay Network is deployed for all paths through the vSwitch. Overlay Technologies covered + (replacing <tech> in the test name) include: + + - VXLAN + - GRE + - NVGRE + - GENEVE + + Performance will be assessed for each of the following overlay network functions: + + - Encapsulation only + - De-encapsulation only + - Both Encapsulation and De-encapsulation + + For each native packet, the DUT must perform the following operations: + + - Examine the packet and classify its correct overlay net (tunnel) assignment + - Encapsulate the packet + - Switch the packet to the correct port + + For each encapsulated packet, the DUT must perform the following operations: + + - Examine the packet and classify its correct native network assignment + - De-encapsulate the packet, if required + - Switch the packet to the correct port + + The selected frame sizes are those previously defined under + :ref:`default-test-parameters`. + + Thus, each test comprises an overlay technology, a network function, + and a packet size *with* overlay network overhead included + (but see also the discussion at + https://etherpad.opnfv.org/p/vSwitchTestsDrafts ). + + The test can also be used to determine the average latency of the traffic. + + Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ + test methodology, the test duration will + include a number of trials; each trial should run for a minimum period + of 60 seconds. A binary search methodology must be applied for each + trial to obtain the final result for Throughput. + + **Expected Result**: At the end of each trial, the presence or absence + of loss determines the modification of offered load for the next trial, + converging on a maximum rate, or + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X% + loss (where the value of X is typically equal to zero). + The Throughput load is re-used in related + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other + tests. + + **Metrics Collected**: + The following are the metrics collected for this test: + + - The maximum Throughput in Frames Per Second (FPS) and Mbps of + the DUT for each frame size with X% packet loss. + - The average latency of the traffic flow when passing through the DUT + and VNFs (if testing for latency, note that this average is different from the + test specified in Section 26.3 of + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__). + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + +.. 3.2.3.1.15 + +Test ID: LTD.Throughput.RFC2544.MatchAction.PacketLossRatio +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 X% packet loss ratio match action Throughput and Latency Test + + **Prerequisite Test**: LTD.Throughput.RFC2544.PacketLossRatio + + **Priority**: + + **Description**: + + The aim of this test is to determine the cost of carrying out match + action(s) on the DUT’s RFC2544 Throughput with X% traffic loss for + a constant load (fixed length frames at a fixed interval time). + + Each test case requires: + + * selection of a specific match action(s), + * specifying a percentage of total traffic that is elligible + for the match action, + * determination of the specific test configuration (number + of flows, number of test ports, presence of an external + controller, etc.), and + * measurement of the RFC 2544 Throughput level with X% packet + loss: Traffic shall be bi-directional and symmetric. + + Note: It would be ideal to verify that all match action-elligible + traffic was forwarded to the correct port, and if forwarded to + an unintended port it should be considered lost. + + A match action is an action that is typically carried on a frame + or packet that matches a set of flow classification parameters + (typically frame/packet header fields). A match action may or may + not modify a packet/frame. Match actions include [1]: + + * output : outputs a packet to a particular port. + * normal: Subjects the packet to traditional L2/L3 processing + (MAC learning). + * flood: Outputs the packet on all switch physical ports + other than the port on which it was received and any ports + on which flooding is disabled. + * all: Outputs the packet on all switch physical ports other + than the port on which it was received. + * local: Outputs the packet on the ``local port``, which + corresponds to the network device that has the same name as + the bridge. + * in_port: Outputs the packet on the port from which it was + received. + * Controller: Sends the packet and its metadata to the + OpenFlow controller as a ``packet in`` message. + * enqueue: Enqueues the packet on the specified queue + within port. + * drop: discard the packet. + + Modifications include [1]: + + * mod vlan: covered by LTD.Throughput.RFC2544.PacketLossRatioFrameModification + * mod_dl_src: Sets the source Ethernet address. + * mod_dl_dst: Sets the destination Ethernet address. + * mod_nw_src: Sets the IPv4 source address. + * mod_nw_dst: Sets the IPv4 destination address. + * mod_tp_src: Sets the TCP or UDP or SCTP source port. + * mod_tp_dst: Sets the TCP or UDP or SCTP destination port. + * mod_nw_tos: Sets the DSCP bits in the IPv4 ToS/DSCP or + IPv6 traffic class field. + * mod_nw_ecn: Sets the ECN bits in the appropriate IPv4 or + IPv6 field. + * mod_nw_ttl: Sets the IPv4 TTL or IPv6 hop limit field. + + Note: This comprehensive list requires extensive traffic generator + capabilities. + + The match action(s) that were applied as part of the test should be + reported in the final test report. + + During this test, the DUT must perform the following operations on + the traffic flow: + + * Perform packet parsing on the DUT’s ingress port. + * Perform any relevant address look-ups on the DUT’s ingress + ports. + * Carry out one or more of the match actions specified above. + + The default loss percentages to be tested are: - X = 0% - X = 10^-7% + Other values can be tested if required by the user. The selected + frame sizes are those previously defined under + :ref:`default-test-parameters`. + + The test can also be used to determine the average latency of the + traffic when a match action is applied to packets in a flow. Under + the RFC2544 test methodology, the test duration will include a + number of trials; each trial should run for a minimum period of 60 + seconds. A binary search methodology must be applied for each + trial to obtain the final result. + + **Expected Result:** + + At the end of each trial, the presence or absence of loss + determines the modification of offered load for the next trial, + converging on a maximum rate, or RFC2544Throughput with X% loss. + The Throughput load is re-used in related RFC2544 tests and other + tests. + + **Metrics Collected:** + + The following are the metrics collected for this test: + + * The RFC 2544 Throughput in Frames Per Second (FPS) and Mbps + of the DUT for each frame size with X% packet loss. + * The average latency of the traffic flow when passing through + the DUT (if testing for latency, note that this average is + different from the test specified in Section 26.3 ofRFC2544). + * CPU and memory utilization may also be collected as part of + this test, to determine the vSwitch’s performance footprint + on the system. + + The metrics collected can be compared to that of the prerequisite + test to determine the cost of the match action(s) in the pipeline. + + **Deployment scenario**: + + - Physical → virtual switch → physical (and others are possible) + + [1] ovs-ofctl - administer OpenFlow switches + [http://openvswitch.org/support/dist-docs/ovs-ofctl.8.txt ] + + +.. 3.2.2.2 + +Packet Latency tests +-------------------- + +These tests will measure the store and forward latency as well as the packet +delay variation for various packet types through the virtual switch. The +following list is not exhaustive but should indicate the type of tests +that should be required. It is expected that more will be added. + +.. 3.2.2.2.1 + +Test ID: LTD.PacketLatency.InitialPacketProcessingLatency +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: Initial Packet Processing Latency + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + In some virtual switch architectures, the first packets of a flow will + take the system longer to process than subsequent packets in the flow. + This test determines the latency for these packets. The test will + measure the latency of the packets as they are processed by the + flow-setup-path of the DUT. There are two methods for this test, a + recommended method and a nalternative method that can be used if it is + possible to disable the fastpath of the virtual switch. + + Recommended method: This test will send 64,000 packets to the DUT, each + belonging to a different flow. Average packet latency will be determined + over the 64,000 packets. + + Alternative method: This test will send a single packet to the DUT after + a fixed interval of time. The time interval will be equivalent to the + amount of time it takes for a flow to time out in the virtual switch + plus 10%. Average packet latency will be determined over 1,000,000 + packets. + + This test is intended only for non-learning virtual switches; For learning + virtual switches use RFC2889. + + For this test, only unidirectional traffic is required. + + **Expected Result**: The average latency for the initial packet of all + flows should be greater than the latency of subsequent traffic. + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - Average latency of the initial packets of all flows that are + processed by the DUT. + + **Deployment scenario**: + + - Physical → Virtual Switch → Physical. + +.. 3.2.2.2.2 + +Test ID: LTD.PacketDelayVariation.RFC3393.Soak +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: Packet Delay Variation Soak Test + + **Prerequisite Tests**: LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss) + + **Priority**: + + **Description**: + + The aim of this test is to understand the distribution of packet delay + variation for different frame sizes over an extended test duration and + to determine if there are any outliers. To allow for an extended test + duration, the test should ideally run for 24 hours or, if this is not + possible, for at least 6 hour. For this test, each frame size must be + sent at the highest possible throughput with 0% packet loss, as + determined in the prerequisite test. + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The packet delay variation value for traffic passing through the DUT. + - The `RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__ + PDV form of delay variation on the traffic flow, + using the 99th percentile, for each 60s interval during the test. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + +.. 3.2.2.3 + +Scalability tests +----------------- + +The general aim of these tests is to understand the impact of large flow +table size and flow lookups on throughput. The following list is not +exhaustive but should indicate the type of tests that should be required. +It is expected that more will be added. + +.. 3.2.2.3.1 + +.. _Scalability0PacketLoss: + +Test ID: LTD.Scalability.Flows.RFC2544.0PacketLoss +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 0% loss Flow Scalability throughput test + + **Prerequisite Test**: LTD.Throughput.RFC2544.PacketLossRatio, IF the + delta Throughput between the single-flow RFC2544 test and this test with + a variable number of flows is desired. + + **Priority**: + + **Description**: + + The aim of this test is to measure how throughput changes as the number + of flows in the DUT increases. The test will measure the throughput + through the fastpath, as such the flows need to be installed on the DUT + before passing traffic. + + For each frame size previously defined under :ref:`default-test-parameters` + and for each of the following number of flows: + + - 1,000 + - 2,000 + - 4,000 + - 8,000 + - 16,000 + - 32,000 + - 64,000 + - Max supported number of flows. + + This test will be conducted under two conditions following the + establishment of all flows as required by RFC 2544, regarding the flow + expiration time-out: + + 1) The time-out never expires during each trial. + + 2) The time-out expires for all flows periodically. This would require a + short time-out compared with flow re-appearance for a small number of + flows, and may not be possible for all flow conditions. + + The maximum 0% packet loss Throughput should be determined in a manner + identical to LTD.Throughput.RFC2544.PacketLossRatio. + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The maximum number of frames per second that can be forwarded at the + specified number of flows and the specified frame size, with zero + packet loss. + +.. 3.2.2.3.2 + +Test ID: LTD.MemoryBandwidth.RFC2544.0PacketLoss.Scalability +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 0% loss Memory Bandwidth Scalability test + + **Prerequisite Tests**: LTD.Throughput.RFC2544.PacketLossRatio, IF the + delta Throughput between an undisturbed RFC2544 test and this test with + the Throughput affected by cache and memory bandwidth contention is desired. + + **Priority**: + + **Description**: + + The aim of this test is to understand how the DUT's performance is + affected by cache sharing and memory bandwidth between processes. + + During the test all cores not used by the vSwitch should be running a + memory intensive application. This application should read and write + random data to random addresses in unused physical memory. The random + nature of the data and addresses is intended to consume cache, exercise + main memory access (as opposed to cache) and exercise all memory buses + equally. Furthermore: + + - the ratio of reads to writes should be recorded. A ratio of 1:1 + SHOULD be used. + - the reads and writes MUST be of cache-line size and be cache-line aligned. + - in NUMA architectures memory access SHOULD be local to the core's node. + Whether only local memory or a mix of local and remote memory is used + MUST be recorded. + - the memory bandwidth (reads plus writes) used per-core MUST be recorded; + the test MUST be run with a per-core memory bandwidth equal to half the + maximum system memory bandwidth divided by the number of cores. The test + MAY be run with other values for the per-core memory bandwidth. + - the test MAY also be run with the memory intensive application running + on all cores. + + Under these conditions the DUT's 0% packet loss throughput is determined + as per LTD.Throughput.RFC2544.PacketLossRatio. + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The DUT's 0% packet loss throughput in the presence of cache sharing and + memory bandwidth between processes. + +.. 3.2.2.3.3 + +Test ID: LTD.Scalability.VNF.RFC2544.PacketLossRatio +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: VNF Scalability RFC 2544 X% packet loss ratio Throughput and + Latency Test + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + This test determines the DUT's throughput rate with X% traffic loss for + a constant load (fixed length frames at a fixed interval time) when the + number of VNFs on the DUT increases. The default loss percentages + to be tested are: - X = 0% - X = 10^-7% . The minimum number of + VNFs to be tested are 3. + + Flow classification should be conducted with L2, L3 and L4 matching + to understand the matching and scaling capability of the vSwitch. The + matching fields which were used as part of the test should be reported + as part of the benchmark report. + + The vSwitch is responsible for forwarding frames between the VNFs + + The SUT (vSwitch and VNF daisy chain) operation should be validated + before running the test. This may be completed by running a burst or + continuous stream of traffic through the SUT to ensure proper operation + before a test. + + **Note**: The traffic rate used to validate SUT operation should be low + enough not to stress the SUT. + + **Note**: Other values can be tested if required by the user. + + **Note**: The same VNF should be used in the "daisy chain" formation. + Each addition of a VNF should be conducted in a new test setup (The DUT + is brought down, then the DUT is brought up again). An atlernative approach + would be to continue to add VNFs without bringing down the DUT. The + approach used needs to be documented as part of the test report. + + The selected frame sizes are those previously defined under + :ref:`default-test-parameters`. + The test can also be used to determine the average latency of the traffic. + + Under the `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ + test methodology, the test duration will + include a number of trials; each trial should run for a minimum period + of 60 seconds. A binary search methodology must be applied for each + trial to obtain the final result for Throughput. + + **Expected Result**: At the end of each trial, the presence or absence + of loss determines the modification of offered load for the next trial, + converging on a maximum rate, or + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ Throughput with X% + loss. + The Throughput load is re-used in related + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__ tests and other + tests. + + If the test VNFs are rather light-weight in terms of processing, the test + provides a view of multiple passes through the vswitch on logical + interfaces. In other words, the test produces an optimistic count of + daisy-chained VNFs, but the cumulative effect of traffic on the vSwitch is + "real" (assuming that the vSwitch has some dedicated resources, and the + effects on shared resources is understood). + + + **Metrics Collected**: + The following are the metrics collected for this test: + + - The maximum Throughput in Frames Per Second (FPS) and Mbps of + the DUT for each frame size with X% packet loss. + - The average latency of the traffic flow when passing through the DUT + and VNFs (if testing for latency, note that this average is different from the + test specified in Section 26.3 of + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__). + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + +.. 3.2.2.3.4 + +Test ID: LTD.Scalability.VNF.RFC2544.PacketLossProfile +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: VNF Scalability RFC 2544 Throughput and Latency Profile + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + This test reveals how throughput and latency degrades as the number + of VNFs increases and offered rate varies in the region of the DUT's + maximum forwarding rate as determined by + LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss). + For example it can be used to determine if the degradation of throughput + and latency as the number of VNFs and offered rate increases is slow + and graceful, or sudden and severe. The minimum number of VNFs to + be tested is 3. + + The selected frame sizes are those previously defined under + :ref:`default-test-parameters`. + + The offered traffic rate is described as a percentage delta with respect + to the DUT's RFC 2544 Throughput as determined by + LTD.Throughput.RFC2544.PacketLoss Ratio (0% Packet Loss case). A delta + of 0% is equivalent to an offered traffic rate equal to the RFC 2544 + Throughput; A delta of +50% indicates an offered rate half-way + between the Throughput and line-rate, whereas a delta of + -50% indicates an offered rate of half the maximum rate. Therefore the + range of the delta figure is natuarlly bounded at -100% (zero offered + traffic) and +100% (traffic offered at line rate). + + The following deltas to the maximum forwarding rate should be applied: + + - -50%, -10%, 0%, +10% & +50% + + **Note**: Other values can be tested if required by the user. + + **Note**: The same VNF should be used in the "daisy chain" formation. + Each addition of a VNF should be conducted in a new test setup (The DUT + is brought down, then the DUT is brought up again). An atlernative approach + would be to continue to add VNFs without bringing down the DUT. The + approach used needs to be documented as part of the test report. + + Flow classification should be conducted with L2, L3 and L4 matching + to understand the matching and scaling capability of the vSwitch. The + matching fields which were used as part of the test should be reported + as part of the benchmark report. + + The SUT (vSwitch and VNF daisy chain) operation should be validated + before running the test. This may be completed by running a burst or + continuous stream of traffic through the SUT to ensure proper operation + before a test. + + **Note**: the traffic rate used to validate SUT operation should be low + enough not to stress the SUT + + **Expected Result**: For each packet size a profile should be produced + of how throughput and latency vary with offered rate. + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The forwarding rate in Frames Per Second (FPS) and Mbps of the DUT + for each delta to the maximum forwarding rate and for each frame + size. + - The average latency for each delta to the maximum forwarding rate and + for each frame size. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + - Any failures experienced (for example if the vSwitch crashes, stops + processing packets, restarts or becomes unresponsive to commands) + when the offered load is above Maximum Throughput MUST be recorded + and reported with the results. + +.. 3.2.2.4 + +Activation tests +---------------- + +The general aim of these tests is to understand the capacity of the +and speed with which the vswitch can accommodate new flows. + +.. 3.2.2.4.1 + +Test ID: LTD.Activation.RFC2889.AddressCachingCapacity +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2889 Address Caching Capacity Test + + **Prerequisite Test**: N/A + + **Priority**: + + **Description**: + + Please note this test is only applicable to virtual switches that are capable of + MAC learning. The aim of this test is to determine the address caching + capacity of the DUT for a constant load (fixed length frames at a fixed + interval time). The selected frame sizes are those previously defined + under :ref:`default-test-parameters`. + + In order to run this test the aging time, that is the maximum time the + DUT will keep a learned address in its flow table, and a set of initial + addresses, whose value should be >= 1 and <= the max number supported by + the implementation must be known. Please note that if the aging time is + configurable it must be longer than the time necessary to produce frames + from the external source at the specified rate. If the aging time is + fixed the frame rate must be brought down to a value that the external + source can produce in a time that is less than the aging time. + + Learning Frames should be sent from an external source to the DUT to + install a number of flows. The Learning Frames must have a fixed + destination address and must vary the source address of the frames. The + DUT should install flows in its flow table based on the varying source + addresses. Frames should then be transmitted from an external source at + a suitable frame rate to see if the DUT has properly learned all of the + addresses. If there is no frame loss and no flooding, the number of + addresses sent to the DUT should be increased and the test is repeated + until the max number of cached addresses supported by the DUT + determined. + + **Expected Result**: + + **Metrics collected**: + + The following are the metrics collected for this test: + + - Number of cached addresses supported by the DUT. + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + + **Deployment scenario**: + + - Physical → virtual switch → 2 x physical (one receiving, one listening). + +.. 3.2.2.4.2 + +Test ID: LTD.Activation.RFC2889.AddressLearningRate +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC2889 Address Learning Rate Test + + **Prerequisite Test**: LTD.Memory.RFC2889.AddressCachingCapacity + + **Priority**: + + **Description**: + + Please note this test is only applicable to virtual switches that are capable of + MAC learning. The aim of this test is to determine the rate of address + learning of the DUT for a constant load (fixed length frames at a fixed + interval time). The selected frame sizes are those previously defined + under :ref:`default-test-parameters`, traffic should be + sent with each IPv4/IPv6 address incremented by one. The rate at which + the DUT learns a new address should be measured. The maximum caching + capacity from LTD.Memory.RFC2889.AddressCachingCapacity should be taken + into consideration as the maximum number of addresses for which the + learning rate can be obtained. + + **Expected Result**: It may be worthwhile to report the behaviour when + operating beyond address capacity - some DUTs may be more friendly to + new addresses than others. + + **Metrics collected**: + + The following are the metrics collected for this test: + + - The address learning rate of the DUT. + + **Deployment scenario**: + + - Physical → virtual switch → 2 x physical (one receiving, one listening). + +.. 3.2.2.5 + +Coupling between control path and datapath Tests +------------------------------------------------ + +The following tests aim to determine how tightly coupled the datapath +and the control path are within a virtual switch. The following list +is not exhaustive but should indicate the type of tests that should be +required. It is expected that more will be added. + +.. 3.2.2.5.1 + +Test ID: LTD.CPDPCouplingFlowAddition +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: Control Path and Datapath Coupling + + **Prerequisite Test**: + + **Priority**: + + **Description**: + + The aim of this test is to understand how exercising the DUT's control + path affects datapath performance. + + Initially a certain number of flow table entries are installed in the + vSwitch. Then over the duration of an RFC2544 throughput test + flow-entries are added and removed at the rates specified below. No + traffic is 'hitting' these flow-entries, they are simply added and + removed. + + The test MUST be repeated with the following initial number of + flow-entries installed: - < 10 - 1000 - 100,000 - 10,000,000 (or the + maximum supported number of flow-entries) + + The test MUST be repeated with the following rates of flow-entry + addition and deletion per second: - 0 - 1 (i.e. 1 addition plus 1 + deletion) - 100 - 10,000 + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - The maximum forwarding rate in Frames Per Second (FPS) and Mbps of + the DUT. + - The average latency of the traffic flow when passing through the DUT + (if testing for latency, note that this average is different from the + test specified in Section 26.3 of + `RFC2544 <https://www.rfc-editor.org/rfc/rfc2544.txt>`__). + - CPU and memory utilization may also be collected as part of this + test, to determine the vSwitch's performance footprint on the system. + + **Deployment scenario**: + + - Physical → virtual switch → physical. + +.. 3.2.2.6 + +CPU and memory consumption +-------------------------- + +The following tests will profile a virtual switch's CPU and memory +utilization under various loads and circumstances. The following +list is not exhaustive but should indicate the type of tests that +should be required. It is expected that more will be added. + +.. 3.2.2.6.1 + +.. _CPU0PacketLoss: + +Test ID: LTD.Stress.RFC2544.0PacketLoss +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + **Title**: RFC 2544 0% Loss CPU OR Memory Stress Test + + **Prerequisite Test**: + + **Priority**: + + **Description**: + + The aim of this test is to understand the overall performance of the + system when a CPU or Memory intensive application is run on the same DUT as + the Virtual Switch. For each frame size, an + LTD.Throughput.RFC2544.PacketLossRatio (0% Packet Loss) test should be + performed. Throughout the entire test a CPU or Memory intensive application + should be run on all cores on the system not in use by the Virtual Switch. + For NUMA system only cores on the same NUMA node are loaded. + + It is recommended that stress-ng be used for loading the non-Virtual + Switch cores but any stress tool MAY be used. + + **Expected Result**: + + **Metrics Collected**: + + The following are the metrics collected for this test: + + - Memory and CPU utilization of the cores running the Virtual Switch. + - The number of identity of the cores allocated to the Virtual Switch. + - The configuration of the stress tool (for example the command line + parameters used to start it.) + + **Note:** Stress in the test ID can be replaced with the name of the + component being stressed, when reporting the results: + LTD.CPU.RFC2544.0PacketLoss or LTD.Memory.RFC2544.0PacketLoss + +.. 3.2.2.7 + +Summary List of Tests +--------------------- + +1. Throughput tests + + - Test ID: LTD.Throughput.RFC2544.PacketLossRatio + - Test ID: LTD.Throughput.RFC2544.PacketLossRatioFrameModification + - Test ID: LTD.Throughput.RFC2544.Profile + - Test ID: LTD.Throughput.RFC2544.SystemRecoveryTime + - Test ID: LTD.Throughput.RFC2544.BackToBackFrames + - Test ID: LTD.Throughput.RFC2889.Soak + - Test ID: LTD.Throughput.RFC2889.SoakFrameModification + - Test ID: LTD.Throughput.RFC6201.ResetTime + - Test ID: LTD.Throughput.RFC2889.MaxForwardingRate + - Test ID: LTD.Throughput.RFC2889.ForwardPressure + - Test ID: LTD.Throughput.RFC2889.ErrorFramesFiltering + - Test ID: LTD.Throughput.RFC2889.BroadcastFrameForwarding + - Test ID: LTD.Throughput.RFC2544.WorstN-BestN + - Test ID: LTD.Throughput.Overlay.Network.<tech>.RFC2544.PacketLossRatio + +2. Packet Latency tests + + - Test ID: LTD.PacketLatency.InitialPacketProcessingLatency + - Test ID: LTD.PacketDelayVariation.RFC3393.Soak + +3. Scalability tests + + - Test ID: LTD.Scalability.Flows.RFC2544.0PacketLoss + - Test ID: LTD.MemoryBandwidth.RFC2544.0PacketLoss.Scalability + - LTD.Scalability.VNF.RFC2544.PacketLossProfile + - LTD.Scalability.VNF.RFC2544.PacketLossRatio + +4. Activation tests + + - Test ID: LTD.Activation.RFC2889.AddressCachingCapacity + - Test ID: LTD.Activation.RFC2889.AddressLearningRate + +5. Coupling between control path and datapath Tests + + - Test ID: LTD.CPDPCouplingFlowAddition + +6. CPU and memory consumption + + - Test ID: LTD.Stress.RFC2544.0PacketLoss diff --git a/docs/testing/developer/requirements/vswitchperf_ltp.rst b/docs/testing/developer/requirements/vswitchperf_ltp.rst new file mode 100644 index 00000000..2b74d676 --- /dev/null +++ b/docs/testing/developer/requirements/vswitchperf_ltp.rst @@ -0,0 +1,1348 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +.. 3.1 + +***************************** +VSPERF LEVEL TEST PLAN (LTP) +***************************** + +=============== +Introduction +=============== + +The objective of the OPNFV project titled +**Characterize vSwitch Performance for Telco NFV Use Cases**, is to +evaluate the performance of virtual switches to identify its suitability for a +Telco Network Function Virtualization (NFV) environment. The intention of this +Level Test Plan (LTP) document is to specify the scope, approach, resources, +and schedule of the virtual switch performance benchmarking activities in +OPNFV. The test cases will be identified in a separate document called the +Level Test Design (LTD) document. + +This document is currently in draft form. + +.. 3.1.1 + + +.. _doc-id: + +Document identifier +========================= + +The document id will be used to uniquely identify versions of the LTP. The +format for the document id will be: OPNFV\_vswitchperf\_LTP\_REL\_STATUS, where +by the status is one of: draft, reviewed, corrected or final. The document id +for this version of the LTP is: OPNFV\_vswitchperf\_LTP\_Colorado\_REVIEWED. + +.. 3.1.2 + +.. _scope: + +Scope +========== + +The main purpose of this project is to specify a suite of +performance tests in order to objectively measure the current packet +transfer characteristics of a virtual switch in the NFVI. The intent of +the project is to facilitate the performance testing of any virtual switch. +Thus, a generic suite of tests shall be developed, with no hard dependencies to +a single implementation. In addition, the test case suite shall be +architecture independent. + +The test cases developed in this project shall not form part of a +separate test framework, all of these tests may be inserted into the +Continuous Integration Test Framework and/or the Platform Functionality +Test Framework - if a vSwitch becomes a standard component of an OPNFV +release. + +.. 3.1.3 + +References +=============== + +* `RFC 1242 Benchmarking Terminology for Network Interconnection + Devices <http://www.ietf.org/rfc/rfc1242.txt>`__ +* `RFC 2544 Benchmarking Methodology for Network Interconnect + Devices <http://www.ietf.org/rfc/rfc2544.txt>`__ +* `RFC 2285 Benchmarking Terminology for LAN Switching + Devices <http://www.ietf.org/rfc/rfc2285.txt>`__ +* `RFC 2889 Benchmarking Methodology for LAN Switching + Devices <http://www.ietf.org/rfc/rfc2889.txt>`__ +* `RFC 3918 Methodology for IP Multicast + Benchmarking <http://www.ietf.org/rfc/rfc3918.txt>`__ +* `RFC 4737 Packet Reordering + Metrics <http://www.ietf.org/rfc/rfc4737.txt>`__ +* `RFC 5481 Packet Delay Variation Applicability + Statement <http://www.ietf.org/rfc/rfc5481.txt>`__ +* `RFC 6201 Device Reset + Characterization <http://tools.ietf.org/html/rfc6201>`__ + +.. 3.1.4 + +Level in the overall sequence +=============================== +The level of testing conducted by vswitchperf in the overall testing sequence (among +all the testing projects in OPNFV) is the performance benchmarking of a +specific component (the vswitch) in the OPNFV platfrom. It's expected that this +testing will follow on from the functional and integration testing conducted by +other testing projects in OPNFV, namely Functest and Yardstick. + +.. 3.1.5 + +Test classes and overall test conditions +========================================= +A benchmark is defined by the IETF as: A standardized test that serves as a +basis for performance evaluation and comparison. It's important to note that +benchmarks are not Functional tests. They do not provide PASS/FAIL criteria, +and most importantly ARE NOT performed on live networks, or performed with live +network traffic. + +In order to determine the packet transfer characteristics of a virtual switch, +the benchmarking tests will be broken down into the following categories: + +- **Throughput Tests** to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by `RFC1242 <https://www.rfc-editor.org/rfc/rfc1242.txt>`__) + without traffic loss. +- **Packet and Frame Delay Tests** to measure average, min and max + packet and frame delay for constant loads. +- **Stream Performance Tests** (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the virtual switch. +- **Request/Response Performance** Tests (TCP, UDP) the measure the + transaction rate through the virtual switch. +- **Packet Delay Tests** to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers. +- **Scalability Tests** to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic's configuration... it has to deal with increases. +- **Control Path and Datapath Coupling** Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT. +- **CPU and Memory Consumption Tests** to understand the virtual + switch’s footprint on the system, this includes: + + * CPU core utilization. + * CPU cache utilization. + * Memory footprint. + * System bus (QPI, PCI, ..) utilization. + * Memory lanes utilization. + * CPU cycles consumed per packet. + * Time To Establish Flows Tests. + +- **Noisy Neighbour Tests**, to understand the effects of resource + sharing on the performance of a virtual switch. + +**Note:** some of the tests above can be conducted simultaneously where +the combined results would be insightful, for example Packet/Frame Delay +and Scalability. + + + +.. 3.2 + +.. _details-of-LTP: + +=================================== +Details of the Level Test Plan +=================================== + +This section describes the following items: +* Test items and their identifiers (TestItems_) +* Test Traceability Matrix (TestMatrix_) +* Features to be tested (FeaturesToBeTested_) +* Features not to be tested (FeaturesNotToBeTested_) +* Approach (Approach_) +* Item pass/fail criteria (PassFailCriteria_) +* Suspension criteria and resumption requirements (SuspensionResumptionReqs_) + +.. 3.2.1 + +.. _TestItems: + +Test items and their identifiers +================================== +The test item/application vsperf is trying to test are virtual switches and in +particular their performance in an nfv environment. vsperf will first try to +measure the maximum achievable performance by a virtual switch and then it will +focus in on usecases that are as close to real life deployment scenarios as +possible. + +.. 3.2.2 + +.. _TestMatrix: + +Test Traceability Matrix +========================== +vswitchperf leverages the "3x3" matrix (introduced in +https://tools.ietf.org/html/draft-ietf-bmwg-virtual-net-02) to achieve test +traceability. The matrix was expanded to 3x4 to accommodate scale metrics when +displaying the coverage of many metrics/benchmarks). Test case covreage in the +LTD is tracked using the following catagories: + + ++---------------+-------------+------------+---------------+-------------+ +| | | | | | +| | SPEED | ACCURACY | RELIABILITY | SCALE | +| | | | | | ++---------------+-------------+------------+---------------+-------------+ +| | | | | | +| Activation | X | X | X | X | +| | | | | | ++---------------+-------------+------------+---------------+-------------+ +| | | | | | +| Operation | X | X | X | X | +| | | | | | ++---------------+-------------+------------+---------------+-------------+ +| | | | | | +| De-activation | | | | | +| | | | | | ++---------------+-------------+------------+---------------+-------------+ + +X = denotes a test catagory that has 1 or more test cases defined. + +.. 3.2.3 + +.. _FeaturesToBeTested: + +Features to be tested +========================== + +Characterizing virtual switches (i.e. Device Under Test (DUT) in this document) +includes measuring the following performance metrics: + +- **Throughput** as defined by `RFC1242 + <https://www.rfc-editor.org/rfc/rfc1242.txt>`__: The maximum rate at which + **none** of the offered frames are dropped by the DUT. The maximum frame + rate and bit rate that can be transmitted by the DUT without any error + should be recorded. Note there is an equivalent bit rate and a specific + layer at which the payloads contribute to the bits. Errors and + improperly formed frames or packets are dropped. +- **Packet delay** introduced by the DUT and its cumulative effect on + E2E networks. Frame delay can be measured equivalently. +- **Packet delay variation**: measured from the perspective of the + VNF/application. Packet delay variation is sometimes called "jitter". + However, we will avoid the term "jitter" as the term holds different + meaning to different groups of people. In this document we will + simply use the term packet delay variation. The preferred form for this + metric is the PDV form of delay variation defined in `RFC5481 + <https://www.rfc-editor.org/rfc/rfc5481.txt>`__. The most relevant + measurement of PDV considers the delay variation of a single user flow, + as this will be relevant to the size of end-system buffers to compensate + for delay variation. The measurement system's ability to store the + delays of individual packets in the flow of interest is a key factor + that determines the specific measurement method. At the outset, it is + ideal to view the complete PDV distribution. Systems that can capture + and store packets and their delays have the freedom to calculate the + reference minimum delay and to determine various quantiles of the PDV + distribution accurately (in post-measurement processing routines). + Systems without storage must apply algorithms to calculate delay and + statistical measurements on the fly. For example, a system may store + temporary estimates of the mimimum delay and the set of (100) packets + with the longest delays during measurement (to calculate a high quantile, + and update these sets with new values periodically. + In some cases, a limited number of delay histogram bins will be + available, and the bin limits will need to be set using results from + repeated experiments. See section 8 of `RFC5481 + <https://www.rfc-editor.org/rfc/rfc5481.txt>`__. +- **Packet loss** (within a configured waiting time at the receiver): All + packets sent to the DUT should be accounted for. +- **Burst behaviour**: measures the ability of the DUT to buffer packets. +- **Packet re-ordering**: measures the ability of the device under test to + maintain sending order throughout transfer to the destination. +- **Packet correctness**: packets or Frames must be well-formed, in that + they include all required fields, conform to length requirements, pass + integrity checks, etc. +- **Availability and capacity** of the DUT i.e. when the DUT is fully “up” + and connected, following measurements should be captured for + DUT without any network packet load: + + - Includes average power consumption of the CPUs (in various power states) and + system over specified period of time. Time period should not be less + than 60 seconds. + - Includes average per core CPU utilization over specified period of time. + Time period should not be less than 60 seconds. + - Includes the number of NIC interfaces supported. + - Includes headroom of VM workload processing cores (i.e. available + for applications). + +.. 3.2.4 + +.. _FeaturesNotToBeTested: + +Features not to be tested +========================== +vsperf doesn't intend to define or perform any functional tests. The aim is to +focus on performance. + +.. 3.2.5 + +.. _Approach: + +Approach +============== +The testing approach adoped by the vswitchperf project is black box testing, +meaning the test inputs can be generated and the outputs captured and +completely evaluated from the outside of the System Under Test. Some metrics +can be collected on the SUT, such as cpu or memory utilization if the +collection has no/minimal impact on benchmark. +This section will look at the deployment scenarios and the general methodology +used by vswitchperf. In addition, this section will also specify the details of +the Test Report that must be collected for each of the test cases. + +.. 3.2.5.1 + +Deployment Scenarios +-------------------------- +The following represents possible deployment test scenarios which can +help to determine the performance of both the virtual switch and the +datapaths to physical ports (to NICs) and to logical ports (to VNFs): + +.. 3.2.5.1.1 + +.. _Phy2Phy: + +Physical port → vSwitch → physical port +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.. code-block:: console + + _ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ _| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +.. 3.2.5.1.2 + +.. _PVP: + +Physical port → vSwitch → VNF → vSwitch → physical port +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.. code-block:: console + + _ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ _| + ^ : + | | + : v _ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ _| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +.. 3.2.5.1.3 + +.. _PVVP: + +Physical port → vSwitch → VNF → vSwitch → VNF → vSwitch → physical port +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + _ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+ _| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | L-----------------+ v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+ _| + ^ ^ : : + | | | | + : : v v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +.. 3.2.5.1.4 + +Physical port → VNF → vSwitch → VNF → physical port +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + _ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + |+-------------------+ | | +-------------------+| | + || Application | | | | Application || | + |+-------------------+ | | +-------------------+| | + | ^ | | | ^ | | | Guests + | | v | | | v | | + |+-------------------+ | | +-------------------+| | + || logical ports | | | | logical ports || | + || 0 1 | | | | 0 1 || | + ++--------------------++ ++--------------------++ _| + ^ : ^ : + (PCI passthrough) | | (PCI passthrough) + | v : | _ + +--------++------------+-+------------++---------+ | + | | || 0 | | 1 || | | | + | | ||logical port| |logical port|| | | | + | | |+------------+ +------------+| | | | + | | | | ^ | | | | + | | | L-----------------+ | | | | + | | | | | | | Host + | | | vSwitch | | | | + | | +-----------------------------+ | | | + | | | | | + | | v | | + | +--------------+ +--------------+ | | + | | phy port/VF | | phy port/VF | | | + +-+--------------+--------------+--------------+-+ _| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +.. 3.2.5.1.5 + +Physical port → vSwitch → VNF +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + _ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ _| + ^ + | + : _ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ _| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +.. 3.2.5.1.6 + +VNF → vSwitch → physical port +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + _ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ _| + : + | + v _ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ _| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +.. 3.2.5.1.7 + +VNF → vSwitch → VNF → vSwitch +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + _ + +-------------------------+ +-------------------------+ | + | Guest 1 | | Guest 2 | | + | +-----------------+ | | +-----------------+ | | + | | Application | | | | Application | | | + | +-----------------+ | | +-----------------+ | | + | : | | ^ | | + | | | | | | | Guest + | v | | : | | + | +---------------+ | | +---------------+ | | + | | logical port 0| | | | logical port 0| | | + +-----+---------------+---+ +---+---------------+-----+ _| + : ^ + | | + v : _ + +----+---------------+------------+---------------+-----+ | + | | port 0 | | port 1 | | | + | +---------------+ +---------------+ | | + | : ^ | | + | | | | | Host + | +--------------------+ | | + | | | + | vswitch | | + +-------------------------------------------------------+ _| + +.. 3.2.5.1.8 + +HOST 1(Physical port → virtual switch → VNF → virtual switch → Physical port) +→ HOST 2(Physical port → virtual switch → VNF → virtual switch → Physical port) + +HOST 1 (PVP) → HOST 2 (PVP) +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +.. code-block:: console + + _ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+ _| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+--+ +---+---------------+--+ | + | | 0 1 | | | | 3 4 | | | + | | logical ports | | | | logical ports | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | Hosts + | | v | | | v | | + | +--------------+ | | +--------------+ | | + | | phy ports | | | | phy ports | | | + +---+--------------+---+ +---+--------------+---+ _| + ^ : : : + | +-----------------+ | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + + + +**Note:** For tests where the traffic generator and/or measurement +receiver are implemented on VM and connected to the virtual switch +through vNIC, the issues of shared resources and interactions between +the measurement devices and the device under test must be considered. + +**Note:** Some RFC 2889 tests require a full-mesh sending and receiving +pattern involving more than two ports. This possibility is illustrated in the +Physical port → vSwitch → VNF → vSwitch → VNF → vSwitch → physical port +diagram above (with 2 sending and 2 receiving ports, though all ports +could be used bi-directionally). + +**Note:** When Deployment Scenarios are used in RFC 2889 address learning +or cache capacity testing, an additional port from the vSwitch must be +connected to the test device. This port is used to listen for flooded +frames. + +.. 3.2.5.2 + +General Methodology: +-------------------------- +To establish the baseline performance of the virtual switch, tests would +initially be run with a simple workload in the VNF (the recommended +simple workload VNF would be `DPDK <http://www.dpdk.org/>`__'s testpmd +application forwarding packets in a VM or vloop\_vnf a simple kernel +module that forwards traffic between two network interfaces inside the +virtualized environment while bypassing the networking stack). +Subsequently, the tests would also be executed with a real Telco +workload running in the VNF, which would exercise the virtual switch in +the context of higher level Telco NFV use cases, and prove that its +underlying characteristics and behaviour can be measured and validated. +Suitable real Telco workload VNFs are yet to be identified. + +.. 3.2.5.2.1 + +.. _default-test-parameters: + +Default Test Parameters +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The following list identifies the default parameters for suite of +tests: + +- Reference application: Simple forwarding or Open Source VNF. +- Frame size (bytes): 64, 128, 256, 512, 1024, 1280, 1518, 2K, 4k OR + Packet size based on use-case (e.g. RTP 64B, 256B) OR Mix of packet sizes as + maintained by the Functest project <https://wiki.opnfv.org/traffic_profile_management>. +- Reordering check: Tests should confirm that packets within a flow are + not reordered. +- Duplex: Unidirectional / Bidirectional. Default: Full duplex with + traffic transmitting in both directions, as network traffic generally + does not flow in a single direction. By default the data rate of + transmitted traffic should be the same in both directions, please + note that asymmetric traffic (e.g. downlink-heavy) tests will be + mentioned explicitly for the relevant test cases. +- Number of Flows: Default for non scalability tests is a single flow. + For scalability tests the goal is to test with maximum supported + flows but where possible will test up to 10 Million flows. Start with + a single flow and scale up. By default flows should be added + sequentially, tests that add flows simultaneously will explicitly + call out their flow addition behaviour. Packets are generated across + the flows uniformly with no burstiness. For multi-core tests should + consider the number of packet flows based on vSwitch/VNF multi-thread + implementation and behavior. + +- Traffic Types: UDP, SCTP, RTP, GTP and UDP traffic. +- Deployment scenarios are: +- Physical → virtual switch → physical. +- Physical → virtual switch → VNF → virtual switch → physical. +- Physical → virtual switch → VNF → virtual switch → VNF → virtual + switch → physical. +- Physical → VNF → virtual switch → VNF → physical. +- Physical → virtual switch → VNF. +- VNF → virtual switch → Physical. +- VNF → virtual switch → VNF. + +Tests MUST have these parameters unless otherwise stated. **Test cases +with non default parameters will be stated explicitly**. + +**Note**: For throughput tests unless stated otherwise, test +configurations should ensure that traffic traverses the installed flows +through the virtual switch, i.e. flows are installed and have an appropriate +time out that doesn't expire before packet transmission starts. + +.. 3.2.5.2.2 + +Flow Classification +~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Virtual switches classify packets into flows by processing and matching +particular header fields in the packet/frame and/or the input port where +the packets/frames arrived. The vSwitch then carries out an action on +the group of packets that match the classification parameters. Thus a +flow is considered to be a sequence of packets that have a shared set of +header field values or have arrived on the same port and have the same +action applied to them. Performance results can vary based on the +parameters the vSwitch uses to match for a flow. The recommended flow +classification parameters for L3 vSwitch performance tests are: the +input port, the source IP address, the destination IP address and the +Ethernet protocol type field. It is essential to increase the flow +time-out time on a vSwitch before conducting any performance tests that +do not measure the flow set-up time. Normally the first packet of a +particular flow will install the flow in the vSwitch which adds an +additional latency, subsequent packets of the same flow are not subject +to this latency if the flow is already installed on the vSwitch. + +.. 3.2.5.2.3 + +Test Priority +~~~~~~~~~~~~~~~~~~~~~ + +Tests will be assigned a priority in order to determine which tests +should be implemented immediately and which tests implementations +can be deferred. + +Priority can be of following types: - Urgent: Must be implemented +immediately. - High: Must be implemented in the next release. - Medium: +May be implemented after the release. - Low: May or may not be +implemented at all. + +.. 3.2.5.2.4 + +SUT Setup +~~~~~~~~~~~~~~~~~~ + +The SUT should be configured to its "default" state. The +SUT's configuration or set-up must not change between tests in any way +other than what is required to do the test. All supported protocols must +be configured and enabled for each test set up. + +.. 3.2.5.2.5 + +Port Configuration +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +The DUT should be configured with n ports where +n is a multiple of 2. Half of the ports on the DUT should be used as +ingress ports and the other half of the ports on the DUT should be used +as egress ports. Where a DUT has more than 2 ports, the ingress data +streams should be set-up so that they transmit packets to the egress +ports in sequence so that there is an even distribution of traffic +across ports. For example, if a DUT has 4 ports 0(ingress), 1(ingress), +2(egress) and 3(egress), the traffic stream directed at port 0 should +output a packet to port 2 followed by a packet to port 3. The traffic +stream directed at port 1 should also output a packet to port 2 followed +by a packet to port 3. + +.. 3.2.5.2.6 + +Frame Formats +~~~~~~~~~~~~~~~~~~~~~ + +**Frame formats Layer 2 (data link layer) protocols** + +- Ethernet II + +.. code-block:: console + + +---------------------------+-----------+ + | Ethernet Header | Payload | Check Sum | + +-----------------+---------+-----------+ + |_________________|_________|___________| + 14 Bytes 46 - 1500 4 Bytes + Bytes + + +**Layer 3 (network layer) protocols** + +- IPv4 + +.. code-block:: console + + +-----------------+-----------+---------+-----------+ + | Ethernet Header | IP Header | Payload | Checksum | + +-----------------+-----------+---------+-----------+ + |_________________|___________|_________|___________| + 14 Bytes 20 bytes 26 - 1480 4 Bytes + Bytes + +- IPv6 + +.. code-block:: console + + +-----------------+-----------+---------+-----------+ + | Ethernet Header | IP Header | Payload | Checksum | + +-----------------+-----------+---------+-----------+ + |_________________|___________|_________|___________| + 14 Bytes 40 bytes 26 - 1460 4 Bytes + Bytes + +**Layer 4 (transport layer) protocols** + + - TCP + - UDP + - SCTP + +.. code-block:: console + + +-----------------+-----------+-----------------+---------+-----------+ + | Ethernet Header | IP Header | Layer 4 Header | Payload | Checksum | + +-----------------+-----------+-----------------+---------+-----------+ + |_________________|___________|_________________|_________|___________| + 14 Bytes 40 bytes 20 Bytes 6 - 1460 4 Bytes + Bytes + + +**Layer 5 (application layer) protocols** + + - RTP + - GTP + +.. code-block:: console + + +-----------------+-----------+-----------------+---------+-----------+ + | Ethernet Header | IP Header | Layer 4 Header | Payload | Checksum | + +-----------------+-----------+-----------------+---------+-----------+ + |_________________|___________|_________________|_________|___________| + 14 Bytes 20 bytes 20 Bytes >= 6 Bytes 4 Bytes + +.. 3.2.5.2.7 + +Packet Throughput +~~~~~~~~~~~~~~~~~~~~~~~~~ +There is a difference between an Ethernet frame, +an IP packet, and a UDP datagram. In the seven-layer OSI model of +computer networking, packet refers to a data unit at layer 3 (network +layer). The correct term for a data unit at layer 2 (data link layer) is +a frame, and at layer 4 (transport layer) is a segment or datagram. + +Important concepts related to 10GbE performance are frame rate and +throughput. The MAC bit rate of 10GbE, defined in the IEEE standard 802 +.3ae, is 10 billion bits per second. Frame rate is based on the bit rate +and frame format definitions. Throughput, defined in IETF RFC 1242, is +the highest rate at which the system under test can forward the offered +load, without loss. + +The frame rate for 10GbE is determined by a formula that divides the 10 +billion bits per second by the preamble + frame length + inter-frame +gap. + +The maximum frame rate is calculated using the minimum values of the +following parameters, as described in the IEEE 802 .3ae standard: + +- Preamble: 8 bytes \* 8 = 64 bits +- Frame Length: 64 bytes (minimum) \* 8 = 512 bits +- Inter-frame Gap: 12 bytes (minimum) \* 8 = 96 bits + +Therefore, Maximum Frame Rate (64B Frames) += MAC Transmit Bit Rate / (Preamble + Frame Length + Inter-frame Gap) += 10,000,000,000 / (64 + 512 + 96) += 10,000,000,000 / 672 += 14,880,952.38 frame per second (fps) + +.. 3.2.5.3 + +RFCs for testing virtual switch performance +-------------------------------------------------- + +The starting point for defining the suite of tests for benchmarking the +performance of a virtual switch is to take existing RFCs and standards +that were designed to test their physical counterparts and adapting them +for testing virtual switches. The rationale behind this is to establish +a fair comparison between the performance of virtual and physical +switches. This section outlines the RFCs that are used by this +specification. + +.. 3.2.5.3.1 + +RFC 1242 Benchmarking Terminology for Network Interconnection +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Devices RFC 1242 defines the terminology that is used in describing +performance benchmarking tests and their results. Definitions and +discussions covered include: Back-to-back, bridge, bridge/router, +constant load, data link frame size, frame loss rate, inter frame gap, +latency, and many more. + +.. 3.2.5.3.2 + +RFC 2544 Benchmarking Methodology for Network Interconnect Devices +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 2544 outlines a benchmarking methodology for network Interconnect +Devices. The methodology results in performance metrics such as latency, +frame loss percentage, and maximum data throughput. + +In this document network “throughput” (measured in millions of frames +per second) is based on RFC 2544, unless otherwise noted. Frame size +refers to Ethernet frames ranging from smallest frames of 64 bytes to +largest frames of 9K bytes. + +Types of tests are: + +1. Throughput test defines the maximum number of frames per second + that can be transmitted without any error, or 0% loss ratio. + In some Throughput tests (and those tests with long duration), + evaluation of an additional frame loss ratio is suggested. The + current ratio (10^-7 %) is based on understanding the typical + user-to-user packet loss ratio needed for good application + performance and recognizing that a single transfer through a + vswitch must contribute a tiny fraction of user-to-user loss. + Further, the ratio 10^-7 % also recognizes practical limitations + when measuring loss ratio. + +2. Latency test measures the time required for a frame to travel from + the originating device through the network to the destination device. + Please note that RFC2544 Latency measurement will be superseded with + a measurement of average latency over all successfully transferred + packets or frames. + +3. Frame loss test measures the network’s + response in overload conditions - a critical indicator of the + network’s ability to support real-time applications in which a + large amount of frame loss will rapidly degrade service quality. + +4. Burst test assesses the buffering capability of a virtual switch. It + measures the maximum number of frames received at full line rate + before a frame is lost. In carrier Ethernet networks, this + measurement validates the excess information rate (EIR) as defined in + many SLAs. + +5. System recovery to characterize speed of recovery from an overload + condition. + +6. Reset to characterize speed of recovery from device or software + reset. This type of test has been updated by `RFC6201 + <https://www.rfc-editor.org/rfc/rfc6201.txt>`__ as such, + the methodology defined by this specification will be that of RFC 6201. + +Although not included in the defined RFC 2544 standard, another crucial +measurement in Ethernet networking is packet delay variation. The +definition set out by this specification comes from +`RFC5481 <https://www.rfc-editor.org/rfc/rfc5481.txt>`__. + +.. 3.2.5.3.3 + +RFC 2285 Benchmarking Terminology for LAN Switching Devices +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 2285 defines the terminology that is used to describe the +terminology for benchmarking a LAN switching device. It extends RFC +1242 and defines: DUTs, SUTs, Traffic orientation and distribution, +bursts, loads, forwarding rates, etc. + +.. 3.2.5.3.4 + +RFC 2889 Benchmarking Methodology for LAN Switching +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 2889 outlines a benchmarking methodology for LAN switching, it +extends RFC 2544. The outlined methodology gathers performance +metrics for forwarding, congestion control, latency, address handling +and finally filtering. + +.. 3.2.5.3.5 + +RFC 3918 Methodology for IP Multicast Benchmarking +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 3918 outlines a methodology for IP Multicast benchmarking. + +.. 3.2.5.3.6 + +RFC 4737 Packet Reordering Metrics +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 4737 describes metrics for identifying and counting re-ordered +packets within a stream, and metrics to measure the extent each +packet has been re-ordered. + +.. 3.2.5.3.7 + +RFC 5481 Packet Delay Variation Applicability Statement +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 5481 defined two common, but different forms of delay variation +metrics, and compares the metrics over a range of networking +circumstances and tasks. The most suitable form for vSwitch +benchmarking is the "PDV" form. + +.. 3.2.5.3.8 + +RFC 6201 Device Reset Characterization +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +RFC 6201 extends the methodology for characterizing the speed of +recovery of the DUT from device or software reset described in RFC +2544. + +.. 3.2.6: + +.. _PassFailCriteria: + +Item pass/fail criteria +========================= + +vswitchperf does not specify Pass/Fail criteria for the tests in terms of a +threshold, as benchmarks do not (and should not do this). The results/metrics +for a test are simply reported. If it had to be defined, a test is considered +to have passed if it succesfully completed and a relavent metric was +recorded/reported for the SUT. + +.. 3.2.7: + +.. _SuspensionResumptionReqs: + +Suspension criteria and resumption requirements +================================================ +In the case of a throughput test, a test should be suspended if a virtual +switch is failing to forward any traffic. A test should be restarted from a +clean state if the intention is to carry out the test again. + +.. 3.2.8: + +.. _TestDelierables: + +Test deliverables +================== +Each test should produce a test report that details SUT information as well as +the test results. There are a number of parameters related to the system, DUT +and tests that can affect the repeatability of a test results and should be +recorded. In order to minimise the variation in the results of a test, +it is recommended that the test report includes the following information: + +- Hardware details including: + + - Platform details. + - Processor details. + - Memory information (see below) + - Number of enabled cores. + - Number of cores used for the test. + - Number of physical NICs, as well as their details (manufacturer, + versions, type and the PCI slot they are plugged into). + - NIC interrupt configuration. + - BIOS version, release date and any configurations that were + modified. + +- Software details including: + + - OS version (for host and VNF) + - Kernel version (for host and VNF) + - GRUB boot parameters (for host and VNF). + - Hypervisor details (Type and version). + - Selected vSwitch, version number or commit id used. + - vSwitch launch command line if it has been parameterised. + - Memory allocation to the vSwitch – which NUMA node it is using, + and how many memory channels. + - Where the vswitch is built from source: compiler details including + versions and the flags that were used to compile the vSwitch. + - DPDK or any other SW dependency version number or commit id used. + - Memory allocation to a VM - if it's from Hugpages/elsewhere. + - VM storage type: snapshot/independent persistent/independent + non-persistent. + - Number of VMs. + - Number of Virtual NICs (vNICs), versions, type and driver. + - Number of virtual CPUs and their core affinity on the host. + - Number vNIC interrupt configuration. + - Thread affinitization for the applications (including the vSwitch + itself) on the host. + - Details of Resource isolation, such as CPUs designated for + Host/Kernel (isolcpu) and CPUs designated for specific processes + (taskset). + +- Memory Details + + - Total memory + - Type of memory + - Used memory + - Active memory + - Inactive memory + - Free memory + - Buffer memory + - Swap cache + - Total swap + - Used swap + - Free swap + +- Test duration. +- Number of flows. +- Traffic Information: + + - Traffic type - UDP, TCP, IMIX / Other. + - Packet Sizes. + +- Deployment Scenario. + +**Note**: Tests that require additional parameters to be recorded will +explicitly specify this. + + +.. 3.3: + +.. _TestManagement: + +Test management +================= +This section will detail the test activities that will be conducted by vsperf +as well as the infrastructure that will be used to complete the tests in OPNFV. + +.. 3.3.1: + +Planned activities and tasks; test progression +================================================= +A key consideration when conducting any sort of benchmark is trying to +ensure the consistency and repeatability of test results between runs. +When benchmarking the performance of a virtual switch there are many +factors that can affect the consistency of results. This section +describes these factors and the measures that can be taken to limit +their effects. In addition, this section will outline some system tests +to validate the platform and the VNF before conducting any vSwitch +benchmarking tests. + +**System Isolation:** + +When conducting a benchmarking test on any SUT, it is essential to limit +(and if reasonable, eliminate) any noise that may interfere with the +accuracy of the metrics collected by the test. This noise may be +introduced by other hardware or software (OS, other applications), and +can result in significantly varying performance metrics being collected +between consecutive runs of the same test. In the case of characterizing +the performance of a virtual switch, there are a number of configuration +parameters that can help increase the repeatability and stability of +test results, including: + +- OS/GRUB configuration: + + - maxcpus = n where n >= 0; limits the kernel to using 'n' + processors. Only use exactly what you need. + - isolcpus: Isolate CPUs from the general scheduler. Isolate all + CPUs bar one which will be used by the OS. + - use taskset to affinitize the forwarding application and the VNFs + onto isolated cores. VNFs and the vSwitch should be allocated + their own cores, i.e. must not share the same cores. vCPUs for the + VNF should be affinitized to individual cores also. + - Limit the amount of background applications that are running and + set OS to boot to runlevel 3. Make sure to kill any unnecessary + system processes/daemons. + - Only enable hardware that you need to use for your test – to + ensure there are no other interrupts on the system. + - Configure NIC interrupts to only use the cores that are not + allocated to any other process (VNF/vSwitch). + +- NUMA configuration: Any unused sockets in a multi-socket system + should be disabled. +- CPU pinning: The vSwitch and the VNF should each be affinitized to + separate logical cores using a combination of maxcpus, isolcpus and + taskset. +- BIOS configuration: BIOS should be configured for performance where + an explicit option exists, sleep states should be disabled, any + virtualization optimization technologies should be enabled, and + hyperthreading should also be enabled, turbo boost and overclocking + should be disabled. + +**System Validation:** + +System validation is broken down into two sub-categories: Platform +validation and VNF validation. The validation test itself involves +verifying the forwarding capability and stability for the sub-system +under test. The rationale behind system validation is two fold. Firstly +to give a tester confidence in the stability of the platform or VNF that +is being tested; and secondly to provide base performance comparison +points to understand the overhead introduced by the virtual switch. + +* Benchmark platform forwarding capability: This is an OPTIONAL test + used to verify the platform and measure the base performance (maximum + forwarding rate in fps and latency) that can be achieved by the + platform without a vSwitch or a VNF. The following diagram outlines + the set-up for benchmarking Platform forwarding capability: + + .. code-block:: console + + __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | l2fw or DPDK L2FWD app | | Host + | | | | | + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + +* Benchmark VNF forwarding capability: This test is used to verify + the VNF and measure the base performance (maximum forwarding rate in + fps and latency) that can be achieved by the VNF without a vSwitch. + The performance metrics collected by this test will serve as a key + comparison point for NIC passthrough technologies and vSwitches. VNF + in this context refers to the hypervisor and the VM. The following + diagram outlines the set-up for benchmarking VNF forwarding + capability: + + .. code-block:: console + + __ + +--------------------------------------------------+ | + | +------------------------------------------+ | | + | | | | | + | | VNF | | | + | | | | | + | +------------------------------------------+ | | + | | Passthrough/SR-IOV | | Host + | +------------------------------------------+ | | + | | NIC | | | + +---+------------------------------------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + + +**Methodology to benchmark Platform/VNF forwarding capability** + + +The recommended methodology for the platform/VNF validation and +benchmark is: - Run `RFC2889 <https://www.rfc-editor.org/rfc/rfc2289.txt>`__ +Maximum Forwarding Rate test, this test will produce maximum +forwarding rate and latency results that will serve as the +expected values. These expected values can be used in +subsequent steps or compared with in subsequent validation tests. - +Transmit bidirectional traffic at line rate/max forwarding rate +(whichever is higher) for at least 72 hours, measure throughput (fps) +and latency. - Note: Traffic should be bidirectional. - Establish a +baseline forwarding rate for what the platform can achieve. - Additional +validation: After the test has completed for 72 hours run bidirectional +traffic at the maximum forwarding rate once more to see if the system is +still functional and measure throughput (fps) and latency. Compare the +measure the new obtained values with the expected values. + +**NOTE 1**: How the Platform is configured for its forwarding capability +test (BIOS settings, GRUB configuration, runlevel...) is how the +platform should be configured for every test after this + +**NOTE 2**: How the VNF is configured for its forwarding capability test +(# of vCPUs, vNICs, Memory, affinitization…) is how it should be +configured for every test that uses a VNF after this. + +**Methodology to benchmark the VNF to vSwitch to VNF deployment scenario** + +vsperf has identified the following concerns when benchmarking the VNF to +vSwitch to VNF deployment scenario: + +* The accuracy of the timing synchronization between VNFs/VMs. +* The clock accuracy of a VNF/VM if they were to be used as traffic generators. +* VNF traffic generator/receiver may be using resources of the system under + test, causing at least three forms of workload to increase as the traffic + load increases (generation, switching, receiving). + +The recommendation from vsperf is that tests for this sceanario must +include an external HW traffic generator to act as the tester/traffic transmitter +and receiver. The perscribed methodology to benchmark this deployment scanrio with +an external tester involves the following three steps: + +#. Determine the forwarding capability and latency through the virtual interface +connected to the VNF/VM. + +.. Figure:: vm2vm_virtual_interface_benchmark.png + + Virtual interfaces performance benchmark + +#. Determine the forwarding capability and latency through the VNF/hypervisor. + +.. Figure:: vm2vm_hypervisor_benchmark.png + + Hypervisor performance benchmark + +#. Determine the forwarding capability and latency for the VNF to vSwitch to VNF + taking the information from the previous two steps into account. + +.. Figure:: vm2vm_benchmark.png + + VNF to vSwitch to VNF performance benchmark + +vsperf also identified an alternative configuration for the final step: + +.. Figure:: vm2vm_alternative_benchmark.png + + VNF to vSwitch to VNF alternative performance benchmark + +.. 3.3.2: + +Environment/infrastructure +============================ +Intel is providing a hosted test-bed with nine bare-metal environments +allocated to different OPNFV projects. Currently a number of servers in +`Intel POD 3 <https://wiki.opnfv.org/display/pharos/Intel+Pod3>`__ are +allocated to vsperf: + + * pod3-wcp-node3 and pod3-wcp-node4 which are used for CI jobs. + * pod3-node6 which is used as a vsperf sandbox environment. + +vsperf CI +--------- +vsperf CI jobs are broken down into: + + * Daily job: + + * Runs everyday takes about 10 hours to complete. + * TESTCASES_DAILY='phy2phy_tput back2back phy2phy_tput_mod_vlan + phy2phy_scalability pvp_tput pvp_back2back pvvp_tput pvvp_back2back'. + * TESTPARAM_DAILY='--test-params TRAFFICGEN_PKT_SIZES=(64,128,512,1024,1518)'. + + * Merge job: + + * Runs whenever patches are merged to master. + * Runs a basic Sanity test. + + * Verify job: + + * Runs every time a patch is pushed to gerrit. + * Builds documentation. + +Scripts: +-------- +There are 2 scripts that are part of VSPERFs CI: + + * build-vsperf.sh: Lives in the VSPERF repository in the ci/ directory and is + used to run vsperf with the appropriate cli parameters. + * vswitchperf.yml: YAML description of our jenkins job. lives in the RELENG + repository. + +More info on vsperf CI can be found here: +https://wiki.opnfv.org/display/vsperf/VSPERF+CI + +.. 3.3.3: + +Responsibilities and authority +=============================== +The group responsible for managing, designing, preparing and executing the +tests listed in the LTD are the vsperf committers and contributors. The vsperf +committers and contributors should work with the relavent OPNFV projects to +ensure that the infrastructure is in place for testing vswitches, and that the +results are published to common end point (a results database). + diff --git a/docs/testing/developer/results/results.rst b/docs/testing/developer/results/results.rst new file mode 100644 index 00000000..42df9611 --- /dev/null +++ b/docs/testing/developer/results/results.rst @@ -0,0 +1,38 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +OPNFV VSPERF CI Results +========================= +The VSPERF CI jobs are run daily through Jenkins. Result samples can be found at +https://wiki.opnfv.org/display/vsperf/Vsperf+Results + +The following table maps the results in the test dashboard to the appropriate +test case in the VSPERF Framework and specifies the metric the vertical/Y axis +is plotting. **Please note**, the presence of dpdk within a test name signifies +that the vswitch under test was OVS with DPDK, while its absence indicates that +the vswitch under test was stock OVS. + +===================== ===================== ================== =============== + Dashboard Test Framework Test Metric Guest Interface +===================== ===================== ================== =============== +tput_ovsdpdk phy2phy_tput Throughput (FPS) N/A +tput_ovs phy2phy_tput Throughput (FPS) N/A +b2b_ovsdpdk back2back Back-to-back value N/A +b2b_ovs back2back Back-to-back value N/A +tput_mod_vlan_ovs phy2phy_tput_mod_vlan Throughput (FPS) N/A +tput_mod_vlan_ovsdpdk phy2phy_tput_mod_vlan Throughput (FPS) N/A +scalability_ovs phy2phy_scalability Throughput (FPS) N/A +scalability_ovsdpdk phy2phy_scalability Throughput (FPS) N/A +pvp_tput_ovsdpdkuser pvp_tput Throughput (FPS) vhost-user +pvp_tput_ovsvirtio pvp_tput Throughput (FPS) virtio-net +pvp_b2b_ovsdpdkuser pvp_back2back Back-to-back value vhost-user +pvp_b2b_ovsvirtio pvp_back2back Back-to-back value virtio-net +pvvp_tput_ovsdpdkuser pvvp_tput Throughput (FPS) vhost-user +pvvp_tput_ovsvirtio pvvp_tput Throughput (FPS) virtio-net +pvvp_b2b_ovsdpdkuser pvvp_back2back Throughput (FPS) vhost-user +pvvp_b2b_ovsvirtio pvvp_back2back Throughput (FPS) virtio-net +===================== ===================== ================== =============== + +The loopback application in the VNF used for PVP and PVVP scenarios was DPDK +testpmd. diff --git a/docs/testing/developer/results/scenario.rst b/docs/testing/developer/results/scenario.rst new file mode 100644 index 00000000..2967fc60 --- /dev/null +++ b/docs/testing/developer/results/scenario.rst @@ -0,0 +1,36 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +OPNFV VSPERF Scenarios +=========================== + +Predefined network topologies: + +* :ref:`Phy2Phy <Phy2Phy>`: Physical port -> vSwitch -> Physical port. +* :ref:`PVP <PVP>`: Physical port -> vSwitch -> VNF -> vSwitch -> Physical port. +* :ref:`PVVP <PVVP>`: Physical port -> vSwitch -> VNF -> vSwitch -> VNF -> vSwitch -> + Physical port. + +Loopback applications in the Guest can be: +* `DPDK testpmd <http://dpdk.org/doc/guides/testpmd_app_ug/index.html>`_. +* Linux Bridge. +* :ref:`l2fwd-module` + +===================== =========================================================== + Testcase Definition +===================== =========================================================== +phy2phy_tput :ref:`PacketLossRatio <PacketLossRatio>` for :ref:`Phy2Phy <Phy2Phy>` +back2back :ref:`BackToBackFrames <BackToBackFrames>` for :ref:`Phy2Phy <Phy2Phy>` +phy2phy_tput_mod_vlan :ref:`PacketLossRatioFrameModification <PacketLossRatioFrameModification>` for :ref:`Phy2Phy <Phy2Phy>` +phy2phy_cont :ref:`Phy2Phy <Phy2Phy>` blast vswitch at x% TX rate and measure throughput +pvp_cont :ref:`PVP <PVP>` blast vswitch at x% TX rate and measure throughput +pvvp_cont :ref:`PVVP <PVVP>` blast vswitch at x% TX rate and measure throughput +phy2phy_scalability :ref:`Scalability0PacketLoss <Scalability0PacketLoss>` for :ref:`Phy2Phy <Phy2Phy>` +pvp_tput :ref:`PacketLossRatio <PacketLossRatio>` for :ref:`PVP <PVP>` +pvp_back2back :ref:`BackToBackFrames <BackToBackFrames>` for :ref:`PVP <PVP>` +pvvp_tput :ref:`PacketLossRatio <PacketLossRatio>` for :ref:`PVVP <PVVP>` +pvvp_back2back :ref:`BackToBackFrames <BackToBackFrames>` for :ref:`PVVP <PVVP>` +phy2phy_cpu_load :ref:`CPU0PacketLoss <CPU0PacketLoss>` for :ref:`Phy2Phy <Phy2Phy>` +phy2phy_mem_load Same as :ref:`CPU0PacketLoss <CPU0PacketLoss>` but using a memory intensive app +===================== =========================================================== diff --git a/docs/testing/user/configguide/LICENSE b/docs/testing/user/configguide/LICENSE new file mode 100644 index 00000000..7bc572ce --- /dev/null +++ b/docs/testing/user/configguide/LICENSE @@ -0,0 +1,2 @@ +This work is licensed under a Creative Commons Attribution 4.0 International License. +http://creativecommons.org/licenses/by/4.0 diff --git a/docs/testing/user/configguide/TCLServerProperties.png b/docs/testing/user/configguide/TCLServerProperties.png Binary files differnew file mode 100644 index 00000000..682de7c5 --- /dev/null +++ b/docs/testing/user/configguide/TCLServerProperties.png diff --git a/docs/testing/user/configguide/installation.rst b/docs/testing/user/configguide/installation.rst new file mode 100644 index 00000000..1965a8f5 --- /dev/null +++ b/docs/testing/user/configguide/installation.rst @@ -0,0 +1,310 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +.. _vsperf-installation: + +====================== +Installing vswitchperf +====================== + +Downloading vswitchperf +----------------------- + +The vswitchperf can be downloaded from its official git repository, which is +hosted by OPNFV. It is necessary to install a ``git`` at your DUT before downloading +vswitchperf. Installation of ``git`` is specific to the packaging system used by +Linux OS installed at DUT. + +Example of installation of GIT package and its dependencies: + +* in case of OS based on RedHat Linux: + + .. code:: bash + + sudo yum install git + + +* in case of Ubuntu or Debian: + + .. code:: bash + + sudo apt-get install git + +After the ``git`` is successfully installed at DUT, then vswitchperf can be downloaded +as follows: + +.. code:: bash + + git clone http://git.opnfv.org/vswitchperf + +The last command will create a directory ``vswitchperf`` with a local copy of vswitchperf +repository. + +Supported Operating Systems +--------------------------- + +* CentOS 7.3 +* Fedora 24 (kernel 4.8 requires DPDK 16.11 and newer) +* Fedora 25 (kernel 4.9 requires DPDK 16.11 and newer) +* openSUSE 42.2 +* RedHat 7.2 Enterprise Linux +* RedHat 7.3 Enterprise Linux +* Ubuntu 14.04 +* Ubuntu 16.04 +* Ubuntu 16.10 (kernel 4.8 requires DPDK 16.11 and newer) + +Supported vSwitches +------------------- + +The vSwitch must support Open Flow 1.3 or greater. + +* Open vSwitch +* Open vSwitch with DPDK support +* TestPMD application from DPDK (supports p2p and pvp scenarios) + +Supported Hypervisors +--------------------- + +* Qemu version 2.3 or greater (version 2.5.0 is recommended) + +Supported VNFs +-------------- + +In theory, it is possible to use any VNF image, which is compatible +with supported hypervisor. However such VNF must ensure, that appropriate +number of network interfaces is configured and that traffic is properly +forwarded among them. For new vswitchperf users it is recommended to start +with official vloop-vnf_ image, which is maintained by vswitchperf community. + +.. _vloop-vnf: + +vloop-vnf +========= + +The official VM image is called vloop-vnf and it is available for free download +from OPNFV artifactory. This image is based on Linux Ubuntu distribution and it +supports following applications for traffic forwarding: + +* DPDK testpmd +* Linux Bridge +* Custom l2fwd module + +The vloop-vnf can be downloaded to DUT, for example by ``wget``: + + .. code:: bash + + wget http://artifacts.opnfv.org/vswitchperf/vnf/vloop-vnf-ubuntu-14.04_20160823.qcow2 + +**NOTE:** In case that ``wget`` is not installed at your DUT, you could install it at RPM +based system by ``sudo yum install wget`` or at DEB based system by ``sudo apt-get install +wget``. + +Changelog of vloop-vnf: + + * `vloop-vnf-ubuntu-14.04_20160823`_ + + * ethtool installed + * only 1 NIC is configured by default to speed up boot with 1 NIC setup + * security updates applied + + * `vloop-vnf-ubuntu-14.04_20160804`_ + + * Linux kernel 4.4.0 installed + * libnuma-dev installed + * security updates applied + + * `vloop-vnf-ubuntu-14.04_20160303`_ + + * snmpd service is disabled by default to avoid error messages during VM boot + * security updates applied + + * `vloop-vnf-ubuntu-14.04_20151216`_ + + * version with development tools required for build of DPDK and l2fwd + +.. _vsperf-installation-script: + +Installation +------------ + +The test suite requires Python 3.3 or newer and relies on a number of other +system and python packages. These need to be installed for the test suite +to function. + +Installation of required packages, preparation of Python 3 virtual +environment and compilation of OVS, DPDK and QEMU is performed by +script **systems/build_base_machine.sh**. It should be executed under +user account, which will be used for vsperf execution. + +**NOTE:** Password-less sudo access must be configured for given +user account before script is executed. + +.. code:: bash + + $ cd systems + $ ./build_base_machine.sh + +**NOTE:** you don't need to go into any of the systems subdirectories, +simply run the top level **build_base_machine.sh**, your OS will be detected +automatically. + +Script **build_base_machine.sh** will install all the vsperf dependencies +in terms of system packages, Python 3.x and required Python modules. +In case of CentOS 7 or RHEL it will install Python 3.3 from an additional +repository provided by Software Collections (`a link`_). Installation script +will also use `virtualenv`_ to create a vsperf virtual environment, which is +isolated from the default Python environment. This environment will reside in a +directory called **vsperfenv** in $HOME. It will ensure, that system wide Python +installation is not modified or broken by VSPERF installation. The complete list +of Python packages installed inside virtualenv can be found at file +``requirements.txt``, which is located at vswitchperf repository. + +**NOTE:** For RHEL 7.3 Enterprise and CentOS 7.3 OVS Vanilla is not +built from upstream source due to kernel incompatibilities. Please see the +instructions in the vswitchperf_design document for details on configuring +OVS Vanilla for binary package usage. + +.. _vpp-installation: + +VPP installation +================ + +Currently vswitchperf installation scripts do not support automatic build +of VPP. In order to execute tests with VPP, it is required to install it +manually. Please refer to the official documentation of `fd.io`_ project to +install VPP from `packages`_ or from the `sources`_. + +See details about :ref:`vpp-test`. + +.. _fd.io: https://fd.io/ +.. _packages: https://wiki.fd.io/view/VPP/Installing_VPP_binaries_from_packages +.. _sources: https://wiki.fd.io/view/VPP/Build,_install,_and_test_images + +Using vswitchperf +----------------- + +You will need to activate the virtual environment every time you start a +new shell session. Its activation is specific to your OS: + +* CentOS 7 and RHEL + + .. code:: bash + + $ scl enable python33 bash + $ source $HOME/vsperfenv/bin/activate + +* Fedora and Ubuntu + + .. code:: bash + + $ source $HOME/vsperfenv/bin/activate + +After the virtual environment is configued, then VSPERF can be used. +For example: + + .. code:: bash + + (vsperfenv) $ cd vswitchperf + (vsperfenv) $ ./vsperf --help + +Gotcha +====== + +In case you will see following error during environment activation: + +.. code:: bash + + $ source $HOME/vsperfenv/bin/activate + Badly placed ()'s. + +then check what type of shell you are using: + +.. code:: bash + + $ echo $SHELL + /bin/tcsh + +See what scripts are available in $HOME/vsperfenv/bin + +.. code:: bash + + $ ls $HOME/vsperfenv/bin/ + activate activate.csh activate.fish activate_this.py + +source the appropriate script + +.. code:: bash + + $ source bin/activate.csh + +Working Behind a Proxy +====================== + +If you're behind a proxy, you'll likely want to configure this before +running any of the above. For example: + + .. code:: bash + + export http_proxy=proxy.mycompany.com:123 + export https_proxy=proxy.mycompany.com:123 + +.. _a link: http://www.softwarecollections.org/en/scls/rhscl/python33/ +.. _virtualenv: https://virtualenv.readthedocs.org/en/latest/ +.. _vloop-vnf-ubuntu-14.04_20160823: http://artifacts.opnfv.org/vswitchperf/vnf/vloop-vnf-ubuntu-14.04_20160823.qcow2 +.. _vloop-vnf-ubuntu-14.04_20160804: http://artifacts.opnfv.org/vswitchperf/vnf/vloop-vnf-ubuntu-14.04_20160804.qcow2 +.. _vloop-vnf-ubuntu-14.04_20160303: http://artifacts.opnfv.org/vswitchperf/vnf/vloop-vnf-ubuntu-14.04_20160303.qcow2 +.. _vloop-vnf-ubuntu-14.04_20151216: http://artifacts.opnfv.org/vswitchperf/vnf/vloop-vnf-ubuntu-14.04_20151216.qcow2 + +Hugepage Configuration +---------------------- + +Systems running vsperf with either dpdk and/or tests with guests must configure +hugepage amounts to support running these configurations. It is recommended +to configure 1GB hugepages as the pagesize. + +The amount of hugepages needed depends on your configuration files in vsperf. +Each guest image requires 2048 MB by default according to the default settings +in the ``04_vnf.conf`` file. + +.. code:: bash + + GUEST_MEMORY = ['2048'] + +The dpdk startup parameters also require an amount of hugepages depending on +your configuration in the ``02_vswitch.conf`` file. + +.. code:: bash + + DPDK_SOCKET_MEM = ['1024', '0'] + +**NOTE:** Option ``DPDK_SOCKET_MEM`` is used by all vSwitches with DPDK support. +It means Open vSwitch, VPP and TestPMD. + +VSPerf will verify hugepage amounts are free before executing test +environments. In case of hugepage amounts not being free, test initialization +will fail and testing will stop. + +**NOTE:** In some instances on a test failure dpdk resources may not +release hugepages used in dpdk configuration. It is recommended to configure a +few extra hugepages to prevent a false detection by VSPerf that not enough free +hugepages are available to execute the test environment. Normally dpdk would use +previously allocated hugepages upon initialization. + +Depending on your OS selection configuration of hugepages may vary. Please refer +to your OS documentation to set hugepages correctly. It is recommended to set +the required amount of hugepages to be allocated by default on reboots. + +Information on hugepage requirements for dpdk can be found at +http://dpdk.org/doc/guides/linux_gsg/sys_reqs.html + +You can review your hugepage amounts by executing the following command + +.. code:: bash + + cat /proc/meminfo | grep Huge + +If no hugepages are available vsperf will try to automatically allocate some. +Allocation is controlled by ``HUGEPAGE_RAM_ALLOCATION`` configuration parameter in +``02_vswitch.conf`` file. Default is 2GB, resulting in either 2 1GB hugepages +or 1024 2MB hugepages. diff --git a/docs/testing/user/configguide/trafficgen.rst b/docs/testing/user/configguide/trafficgen.rst new file mode 100644 index 00000000..4e42b2be --- /dev/null +++ b/docs/testing/user/configguide/trafficgen.rst @@ -0,0 +1,671 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +.. _trafficgen-installation: + +=========================== +'vsperf' Traffic Gen Guide +=========================== + +Overview +-------- + +VSPERF supports the following traffic generators: + + * Dummy_ (DEFAULT) + * Ixia_ + * `Spirent TestCenter`_ + * `Xena Networks`_ + * MoonGen_ + +To see the list of traffic gens from the cli: + +.. code-block:: console + + $ ./vsperf --list-trafficgens + +This guide provides the details of how to install +and configure the various traffic generators. + +Background Information +---------------------- +The traffic default configuration can be found in **conf/03_traffic.conf**, +and is configured as follows: + +.. code-block:: console + + TRAFFIC = { + 'traffic_type' : 'rfc2544_throughput', + 'frame_rate' : 100, + 'bidir' : 'True', # will be passed as string in title format to tgen + 'multistream' : 0, + 'stream_type' : 'L4', + 'pre_installed_flows' : 'No', # used by vswitch implementation + 'flow_type' : 'port', # used by vswitch implementation + + 'l2': { + 'framesize': 64, + 'srcmac': '00:00:00:00:00:00', + 'dstmac': '00:00:00:00:00:00', + }, + 'l3': { + 'proto': 'udp', + 'srcip': '1.1.1.1', + 'dstip': '90.90.90.90', + }, + 'l4': { + 'srcport': 3000, + 'dstport': 3001, + }, + 'vlan': { + 'enabled': False, + 'id': 0, + 'priority': 0, + 'cfi': 0, + }, + } + +The framesize parameter can be overridden from the configuration +files by adding the following to your custom configuration file +``10_custom.conf``: + +.. code-block:: console + + TRAFFICGEN_PKT_SIZES = (64, 128,) + +OR from the commandline: + +.. code-block:: console + + $ ./vsperf --test-params "TRAFFICGEN_PKT_SIZES=(x,y)" $TESTNAME + +You can also modify the traffic transmission duration and the number +of tests run by the traffic generator by extending the example +commandline above to: + +.. code-block:: console + + $ ./vsperf --test-params "TRAFFICGEN_PKT_SIZES=(x,y);TRAFFICGEN_DURATION=10;" \ + "TRAFFICGEN_RFC2544_TESTS=1" $TESTNAME + +.. _trafficgen-dummy: + +Dummy +----- + +The Dummy traffic generator can be used to test VSPERF installation or +to demonstrate VSPERF functionality at DUT without connection +to a real traffic generator. + +You could also use the Dummy generator in case, that your external +traffic generator is not supported by VSPERF. In such case you could +use VSPERF to setup your test scenario and then transmit the traffic. +After the transmission is completed you could specify values for all +collected metrics and VSPERF will use them to generate final reports. + +Setup +~~~~~ + +To select the Dummy generator please add the following to your +custom configuration file ``10_custom.conf``. + +.. code-block:: console + + TRAFFICGEN = 'Dummy' + +OR run ``vsperf`` with the ``--trafficgen`` argument + +.. code-block:: console + + $ ./vsperf --trafficgen Dummy $TESTNAME + +Where $TESTNAME is the name of the vsperf test you would like to run. +This will setup the vSwitch and the VNF (if one is part of your test) +print the traffic configuration and prompt you to transmit traffic +when the setup is complete. + +.. code-block:: console + + Please send 'continuous' traffic with the following stream config: + 30mS, 90mpps, multistream False + and the following flow config: + { + "flow_type": "port", + "l3": { + "srcip": "1.1.1.1", + "proto": "tcp", + "dstip": "90.90.90.90" + }, + "traffic_type": "rfc2544_continuous", + "multistream": 0, + "bidir": "True", + "vlan": { + "cfi": 0, + "priority": 0, + "id": 0, + "enabled": false + }, + "frame_rate": 90, + "l2": { + "dstport": 3001, + "srcport": 3000, + "dstmac": "00:00:00:00:00:00", + "srcmac": "00:00:00:00:00:00", + "framesize": 64 + } + } + What was the result for 'frames tx'? + +When your traffic generator has completed traffic transmission and provided +the results please input these at the VSPERF prompt. VSPERF will try +to verify the input: + +.. code-block:: console + + Is '$input_value' correct? + +Please answer with y OR n. + +VSPERF will ask you to provide a value for every of collected metrics. The list +of metrics can be found at traffic-type-metrics_. +Finally vsperf will print out the results for your test and generate the +appropriate logs and report files. + +.. _traffic-type-metrics: + +Metrics collected for supported traffic types +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Below you could find a list of metrics collected by VSPERF for each of supported +traffic types. + +RFC2544 Throughput and Continuous: + + * frames tx + * frames rx + * min latency + * max latency + * avg latency + * frameloss + +RFC2544 Back2back: + + * b2b frames + * b2b frame loss % + +Dummy result pre-configuration +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +In case of a Dummy traffic generator it is possible to pre-configure the test +results. This is useful for creation of demo testcases, which do not require +a real traffic generator. Such testcase can be run by any user and it will still +generate all reports and result files. + +Result values can be specified within ``TRAFFICGEN_DUMMY_RESULTS`` dictionary, +where every of collected metrics must be properly defined. Please check the list +of traffic-type-metrics_. + +Dictionary with dummy results can be passed by CLI argument ``--test-params`` +or specified in ``Parameters`` section of testcase definition. + +Example of testcase execution with dummy results defined by CLI argument: + +.. code-block:: console + + $ ./vsperf back2back --trafficgen Dummy --test-params \ + "TRAFFICGEN_DUMMY_RESULTS={'b2b frames':'3000','b2b frame loss %':'0.0'}" + +Example of testcase definition with pre-configured dummy results: + +.. code-block:: python + + { + "Name": "back2back", + "Traffic Type": "rfc2544_back2back", + "Deployment": "p2p", + "biDirectional": "True", + "Description": "LTD.Throughput.RFC2544.BackToBackFrames", + "Parameters" : { + 'TRAFFICGEN_DUMMY_RESULTS' : {'b2b frames':'3000','b2b frame loss %':'0.0'} + }, + }, + +**NOTE:** Pre-configured results for the Dummy traffic generator will be used only +in case, that the Dummy traffic generator is used. Otherwise the option +``TRAFFICGEN_DUMMY_RESULTS`` will be ignored. + +.. _Ixia: + +Ixia +---- + +VSPERF can use both IxNetwork and IxExplorer TCL servers to control Ixia chassis. +However usage of IxNetwork TCL server is a preferred option. Following sections +will describe installation and configuration of IxNetwork components used by VSPERF. + +Installation +~~~~~~~~~~~~ + +On the system under the test you need to install IxNetworkTclClient$(VER\_NUM)Linux.bin.tgz. + +On the IXIA client software system you need to install IxNetwork TCL server. After its +installation you should configure it as follows: + + 1. Find the IxNetwork TCL server app (start -> All Programs -> IXIA -> + IxNetwork -> IxNetwork\_$(VER\_NUM) -> IxNetwork TCL Server) + 2. Right click on IxNetwork TCL Server, select properties - Under shortcut tab in + the Target dialogue box make sure there is the argument "-tclport xxxx" + where xxxx is your port number (take note of this port number as you will + need it for the 10\_custom.conf file). + + .. image:: TCLServerProperties.png + + 3. Hit Ok and start the TCL server application + +VSPERF configuration +~~~~~~~~~~~~~~~~~~~~ + +There are several configuration options specific to the IxNetwork traffic generator +from IXIA. It is essential to set them correctly, before the VSPERF is executed +for the first time. + +Detailed description of options follows: + + * ``TRAFFICGEN_IXNET_MACHINE`` - IP address of server, where IxNetwork TCL Server is running + * ``TRAFFICGEN_IXNET_PORT`` - PORT, where IxNetwork TCL Server is accepting connections from + TCL clients + * ``TRAFFICGEN_IXNET_USER`` - username, which will be used during communication with IxNetwork + TCL Server and IXIA chassis + * ``TRAFFICGEN_IXIA_HOST`` - IP address of IXIA traffic generator chassis + * ``TRAFFICGEN_IXIA_CARD`` - identification of card with dedicated ports at IXIA chassis + * ``TRAFFICGEN_IXIA_PORT1`` - identification of the first dedicated port at ``TRAFFICGEN_IXIA_CARD`` + at IXIA chassis; VSPERF uses two separated ports for traffic generation. In case of + unidirectional traffic, it is essential to correctly connect 1st IXIA port to the 1st NIC + at DUT, i.e. to the first PCI handle from ``WHITELIST_NICS`` list. Otherwise traffic may not + be able to pass through the vSwitch. + * ``TRAFFICGEN_IXIA_PORT2`` - identification of the second dedicated port at ``TRAFFICGEN_IXIA_CARD`` + at IXIA chassis; VSPERF uses two separated ports for traffic generation. In case of + unidirectional traffic, it is essential to correctly connect 2nd IXIA port to the 2nd NIC + at DUT, i.e. to the second PCI handle from ``WHITELIST_NICS`` list. Otherwise traffic may not + be able to pass through the vSwitch. + * ``TRAFFICGEN_IXNET_LIB_PATH`` - path to the DUT specific installation of IxNetwork TCL API + * ``TRAFFICGEN_IXNET_TCL_SCRIPT`` - name of the TCL script, which VSPERF will use for + communication with IXIA TCL server + * ``TRAFFICGEN_IXNET_TESTER_RESULT_DIR`` - folder accessible from IxNetwork TCL server, + where test results are stored, e.g. ``c:/ixia_results``; see test-results-share_ + * ``TRAFFICGEN_IXNET_DUT_RESULT_DIR`` - directory accessible from the DUT, where test + results from IxNetwork TCL server are stored, e.g. ``/mnt/ixia_results``; see + test-results-share_ + +.. _test-results-share: + +Test results share +~~~~~~~~~~~~~~~~~~ + +VSPERF is not able to retrieve test results via TCL API directly. Instead, all test +results are stored at IxNetwork TCL server. Results are stored at folder defined by +``TRAFFICGEN_IXNET_TESTER_RESULT_DIR`` configuration parameter. Content of this +folder must be shared (e.g. via samba protocol) between TCL Server and DUT, where +VSPERF is executed. VSPERF expects, that test results will be available at directory +configured by ``TRAFFICGEN_IXNET_DUT_RESULT_DIR`` configuration parameter. + +Example of sharing configuration: + + * Create a new folder at IxNetwork TCL server machine, e.g. ``c:\ixia_results`` + * Modify sharing options of ``ixia_results`` folder to share it with everybody + * Create a new directory at DUT, where shared directory with results + will be mounted, e.g. ``/mnt/ixia_results`` + * Update your custom VSPERF configuration file as follows: + + .. code-block:: python + + TRAFFICGEN_IXNET_TESTER_RESULT_DIR = 'c:/ixia_results' + TRAFFICGEN_IXNET_DUT_RESULT_DIR = '/mnt/ixia_results' + + **NOTE:** It is essential to use slashes '/' also in path + configured by ``TRAFFICGEN_IXNET_TESTER_RESULT_DIR`` parameter. + * Install cifs-utils package. + + e.g. at rpm based Linux distribution: + + .. code-block:: console + + yum install cifs-utils + + * Mount shared directory, so VSPERF can access test results. + + e.g. by adding new record into ``/etc/fstab`` + + .. code-block:: console + + mount -t cifs //_TCL_SERVER_IP_OR_FQDN_/ixia_results /mnt/ixia_results + -o file_mode=0777,dir_mode=0777,nounix + +It is recommended to verify, that any new file inserted into ``c:/ixia_results`` folder +is visible at DUT inside ``/mnt/ixia_results`` directory. + +.. _`Spirent TestCenter`: + +Spirent Setup +------------- + +Spirent installation files and instructions are available on the +Spirent support website at: + +http://support.spirent.com + +Select a version of Spirent TestCenter software to utilize. This example +will use Spirent TestCenter v4.57 as an example. Substitute the appropriate +version in place of 'v4.57' in the examples, below. + +On the CentOS 7 System +~~~~~~~~~~~~~~~~~~~~~~ + +Download and install the following: + +Spirent TestCenter Application, v4.57 for 64-bit Linux Client + +Spirent Virtual Deployment Service (VDS) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Spirent VDS is required for both TestCenter hardware and virtual +chassis in the vsperf environment. For installation, select the version +that matches the Spirent TestCenter Application version. For v4.57, +the matching VDS version is 1.0.55. Download either the ova (VMware) +or qcow2 (QEMU) image and create a VM with it. Initialize the VM +according to Spirent installation instructions. + +Using Spirent TestCenter Virtual (STCv) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +STCv is available in both ova (VMware) and qcow2 (QEMU) formats. For +VMware, download: + +Spirent TestCenter Virtual Machine for VMware, v4.57 for Hypervisor - VMware ESX.ESXi + +Virtual test port performance is affected by the hypervisor configuration. For +best practice results in deploying STCv, the following is suggested: + +- Create a single VM with two test ports rather than two VMs with one port each +- Set STCv in DPDK mode +- Give STCv 2*n + 1 cores, where n = the number of ports. For vsperf, cores = 5. +- Turning off hyperthreading and pinning these cores will improve performance +- Give STCv 2 GB of RAM + +To get the highest performance and accuracy, Spirent TestCenter hardware is +recommended. vsperf can run with either stype test ports. + +Using STC REST Client +~~~~~~~~~~~~~~~~~~~~~ +The stcrestclient package provides the stchttp.py ReST API wrapper module. +This allows simple function calls, nearly identical to those provided by +StcPython.py, to be used to access TestCenter server sessions via the +STC ReST API. Basic ReST functionality is provided by the resthttp module, +and may be used for writing ReST clients independent of STC. + +- Project page: <https://github.com/Spirent/py-stcrestclient> +- Package download: <http://pypi.python.org/pypi/stcrestclient> + +To use REST interface, follow the instructions in the Project page to +install the package. Once installed, the scripts named with 'rest' keyword +can be used. For example: testcenter-rfc2544-rest.py can be used to run +RFC 2544 tests using the REST interface. + +Configuration: +~~~~~~~~~~~~~~ + +1. The Labserver and license server addresses. These parameters applies to + all the tests, and are mandatory for all tests. + +.. code-block:: console + + TRAFFICGEN_STC_LAB_SERVER_ADDR = " " + TRAFFICGEN_STC_LICENSE_SERVER_ADDR = " " + TRAFFICGEN_STC_PYTHON2_PATH = " " + TRAFFICGEN_STC_TESTCENTER_PATH = " " + TRAFFICGEN_STC_TEST_SESSION_NAME = " " + TRAFFICGEN_STC_CSV_RESULTS_FILE_PREFIX = " " + +2. For RFC2544 tests, the following parameters are mandatory + +.. code-block:: console + + TRAFFICGEN_STC_EAST_CHASSIS_ADDR = " " + TRAFFICGEN_STC_EAST_SLOT_NUM = " " + TRAFFICGEN_STC_EAST_PORT_NUM = " " + TRAFFICGEN_STC_EAST_INTF_ADDR = " " + TRAFFICGEN_STC_EAST_INTF_GATEWAY_ADDR = " " + TRAFFICGEN_STC_WEST_CHASSIS_ADDR = "" + TRAFFICGEN_STC_WEST_SLOT_NUM = " " + TRAFFICGEN_STC_WEST_PORT_NUM = " " + TRAFFICGEN_STC_WEST_INTF_ADDR = " " + TRAFFICGEN_STC_WEST_INTF_GATEWAY_ADDR = " " + TRAFFICGEN_STC_RFC2544_TPUT_TEST_FILE_NAME + +3. RFC2889 tests: Currently, the forwarding, address-caching, and + address-learning-rate tests of RFC2889 are supported. + The testcenter-rfc2889-rest.py script implements the rfc2889 tests. + The configuration for RFC2889 involves test-case definition, and parameter + definition, as described below. New results-constants, as shown below, are + added to support these tests. + +Example of testcase definition for RFC2889 tests: + +.. code-block:: python + + { + "Name": "phy2phy_forwarding", + "Deployment": "p2p", + "Description": "LTD.Forwarding.RFC2889.MaxForwardingRate", + "Parameters" : { + "TRAFFIC" : { + "traffic_type" : "rfc2889_forwarding", + }, + }, + } + +For RFC2889 tests, specifying the locations for the monitoring ports is mandatory. +Necessary parameters are: + +.. code-block:: console + + TRAFFICGEN_STC_RFC2889_TEST_FILE_NAME + TRAFFICGEN_STC_EAST_CHASSIS_ADDR = " " + TRAFFICGEN_STC_EAST_SLOT_NUM = " " + TRAFFICGEN_STC_EAST_PORT_NUM = " " + TRAFFICGEN_STC_EAST_INTF_ADDR = " " + TRAFFICGEN_STC_EAST_INTF_GATEWAY_ADDR = " " + TRAFFICGEN_STC_WEST_CHASSIS_ADDR = "" + TRAFFICGEN_STC_WEST_SLOT_NUM = " " + TRAFFICGEN_STC_WEST_PORT_NUM = " " + TRAFFICGEN_STC_WEST_INTF_ADDR = " " + TRAFFICGEN_STC_WEST_INTF_GATEWAY_ADDR = " " + TRAFFICGEN_STC_VERBOSE = "True" + TRAFFICGEN_STC_RFC2889_LOCATIONS="//10.1.1.1/1/1,//10.1.1.1/2/2" + +Other Configurations are : + +.. code-block:: console + + TRAFFICGEN_STC_RFC2889_MIN_LR = 1488 + TRAFFICGEN_STC_RFC2889_MAX_LR = 14880 + TRAFFICGEN_STC_RFC2889_MIN_ADDRS = 1000 + TRAFFICGEN_STC_RFC2889_MAX_ADDRS = 65536 + TRAFFICGEN_STC_RFC2889_AC_LR = 1000 + +The first 2 values are for address-learning test where as other 3 values are +for the Address caching capacity test. LR: Learning Rate. AC: Address Caching. +Maximum value for address is 16777216. Whereas, maximum for LR is 4294967295. + +Results for RFC2889 Tests: Forwarding tests outputs following values: + +.. code-block:: console + + TX_RATE_FPS : "Transmission Rate in Frames/sec" + THROUGHPUT_RX_FPS: "Received Throughput Frames/sec" + TX_RATE_MBPS : " Transmission rate in MBPS" + THROUGHPUT_RX_MBPS: "Received Throughput in MBPS" + TX_RATE_PERCENT: "Transmission Rate in Percentage" + FRAME_LOSS_PERCENT: "Frame loss in Percentage" + FORWARDING_RATE_FPS: " Maximum Forwarding Rate in FPS" + + +Whereas, the address caching test outputs following values, + +.. code-block:: console + + CACHING_CAPACITY_ADDRS = 'Number of address it can cache' + ADDR_LEARNED_PERCENT = 'Percentage of address successfully learned' + +and address learning test outputs just a single value: + +.. code-block:: console + + OPTIMAL_LEARNING_RATE_FPS = 'Optimal learning rate in fps' + +Note that 'FORWARDING_RATE_FPS', 'CACHING_CAPACITY_ADDRS', +'ADDR_LEARNED_PERCENT' and 'OPTIMAL_LEARNING_RATE_FPS' are the new +result-constants added to support RFC2889 tests. + +.. _`Xena Networks`: + +Xena Networks +------------- + +Installation +~~~~~~~~~~~~ + +Xena Networks traffic generator requires specific files and packages to be +installed. It is assumed the user has access to the Xena2544.exe file which +must be placed in VSPerf installation location under the tools/pkt_gen/xena +folder. Contact Xena Networks for the latest version of this file. The user +can also visit www.xenanetworks/downloads to obtain the file with a valid +support contract. + +**Note** VSPerf has been fully tested with version v2.43 of Xena2544.exe + +To execute the Xena2544.exe file under Linux distributions the mono-complete +package must be installed. To install this package follow the instructions +below. Further information can be obtained from +http://www.mono-project.com/docs/getting-started/install/linux/ + +.. code-block:: console + + rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF" + yum-config-manager --add-repo http://download.mono-project.com/repo/centos/ + yum -y install mono-complete + +To prevent gpg errors on future yum installation of packages the mono-project +repo should be disabled once installed. + +.. code-block:: console + + yum-config-manager --disable download.mono-project.com_repo_centos_ + +Configuration +~~~~~~~~~~~~~ + +Connection information for your Xena Chassis must be supplied inside the +``10_custom.conf`` or ``03_custom.conf`` file. The following parameters must be +set to allow for proper connections to the chassis. + +.. code-block:: console + + TRAFFICGEN_XENA_IP = '' + TRAFFICGEN_XENA_PORT1 = '' + TRAFFICGEN_XENA_PORT2 = '' + TRAFFICGEN_XENA_USER = '' + TRAFFICGEN_XENA_PASSWORD = '' + TRAFFICGEN_XENA_MODULE1 = '' + TRAFFICGEN_XENA_MODULE2 = '' + +RFC2544 Throughput Testing +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Xena traffic generator testing for rfc2544 throughput can be modified for +different behaviors if needed. The default options for the following are +optimized for best results. + +.. code-block:: console + + TRAFFICGEN_XENA_2544_TPUT_INIT_VALUE = '10.0' + TRAFFICGEN_XENA_2544_TPUT_MIN_VALUE = '0.1' + TRAFFICGEN_XENA_2544_TPUT_MAX_VALUE = '100.0' + TRAFFICGEN_XENA_2544_TPUT_VALUE_RESOLUTION = '0.5' + TRAFFICGEN_XENA_2544_TPUT_USEPASS_THRESHHOLD = 'false' + TRAFFICGEN_XENA_2544_TPUT_PASS_THRESHHOLD = '0.0' + +Each value modifies the behavior of rfc 2544 throughput testing. Refer to your +Xena documentation to understand the behavior changes in modifying these +values. + +Continuous Traffic Testing +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Xena continuous traffic by default does a 3 second learning preemption to allow +the DUT to receive learning packets before a continuous test is performed. If +a custom test case requires this learning be disabled, you can disable the option +or modify the length of the learning by modifying the following settings. + +.. code-block:: console + + TRAFFICGEN_XENA_CONT_PORT_LEARNING_ENABLED = False + TRAFFICGEN_XENA_CONT_PORT_LEARNING_DURATION = 3 + +MoonGen +------- + +Installation +~~~~~~~~~~~~ + +MoonGen architecture overview and general installation instructions +can be found here: + +https://github.com/emmericp/MoonGen + +* Note: Today, MoonGen with VSPERF only supports 10Gbps line speeds. + +For VSPERF use, MoonGen should be cloned from here (as opposed to the +previously mentioned GitHub): + +git clone https://github.com/atheurer/lua-trafficgen + +and use the master branch: + +git checkout master + +VSPERF uses a particular Lua script with the MoonGen project: + +trafficgen.lua + +Follow MoonGen set up and execution instructions here: + +https://github.com/atheurer/lua-trafficgen/blob/master/README.md + +Note one will need to set up ssh login to not use passwords between the server +running MoonGen and the device under test (running the VSPERF test +infrastructure). This is because VSPERF on one server uses 'ssh' to +configure and run MoonGen upon the other server. + +One can set up this ssh access by doing the following on both servers: + +.. code-block:: console + + ssh-keygen -b 2048 -t rsa + ssh-copy-id <other server> + +Configuration +~~~~~~~~~~~~~ + +Connection information for MoonGen must be supplied inside the +``10_custom.conf`` or ``03_custom.conf`` file. The following parameters must be +set to allow for proper connections to the host with MoonGen. + +.. code-block:: console + + TRAFFICGEN_MOONGEN_HOST_IP_ADDR = "" + TRAFFICGEN_MOONGEN_USER = "" + TRAFFICGEN_MOONGEN_BASE_DIR = "" + TRAFFICGEN_MOONGEN_PORTS = "" + TRAFFICGEN_MOONGEN_LINE_SPEED_GBPS = "" diff --git a/docs/testing/user/configguide/upgrade.rst b/docs/testing/user/configguide/upgrade.rst new file mode 100644 index 00000000..cf92572c --- /dev/null +++ b/docs/testing/user/configguide/upgrade.rst @@ -0,0 +1,183 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +===================== +Upgrading vswitchperf +===================== + +Generic +------- + +In case, that VSPERF is cloned from git repository, then it is easy to +upgrade it to the newest stable version or to the development version. + +You could get a list of stable releases by ``git`` command. It is necessary +to update local git repository first. + +**NOTE:** Git commands must be executed from directory, where VSPERF repository +was cloned, e.g. ``vswitchperf``. + +Update of local git repository: + +.. code:: bash + + $ git pull + +List of stable releases: + +.. code:: bash + + $ git tag + + brahmaputra.1.0 + colorado.1.0 + colorado.2.0 + colorado.3.0 + danube.1.0 + +You could select which stable release should be used. For example, select ``danube.1.0``: + +.. code:: bash + + $ git checkout danube.1.0 + + +Development version of VSPERF can be selected by: + +.. code:: bash + + $ git checkout master + +Colorado to Danube upgrade notes +-------------------------------- + +Obsoleted features +~~~~~~~~~~~~~~~~~~ + +Support of vHost Cuse interface has been removed in Danube release. It means, +that it is not possible to select ``QemuDpdkVhostCuse`` as a VNF anymore. Option +``QemuDpdkVhostUser`` should be used instead. Please check you configuration files +and definition of your testcases for any occurrence of: + +.. code:: python + + VNF = "QemuDpdkVhostCuse" + +or + +.. code:: python + + "VNF" : "QemuDpdkVhostCuse" + +In case that ``QemuDpdkVhostCuse`` is found, it must be modified to ``QemuDpdkVhostUser``. + +**NOTE:** In case that execution of VSPERF is automated by scripts (e.g. for +CI purposes), then these scripts must be checked and updated too. It means, +that any occurrence of: + +.. code:: bash + + ./vsperf --vnf QemuDpdkVhostCuse + +must be updated to: + +.. code:: bash + + ./vsperf --vnf QemuDpdkVhostUser + +Configuration +~~~~~~~~~~~~~ + +Several configuration changes were introduced during Danube release. The most +important changes are discussed below. + +Paths to DPDK, OVS and QEMU +=========================== + +VSPERF uses external tools for proper testcase execution. Thus it is important +to properly configure paths to these tools. In case that tools are installed +by installation scripts and are located inside ``./src`` directory inside +VSPERF home, then no changes are needed. On the other hand, if path settings +was changed by custom configuration file, then it is required to update configuration +accordingly. Please check your configuration files for following configuration +options: + +.. code:: bash + + OVS_DIR + OVS_DIR_VANILLA + OVS_DIR_USER + OVS_DIR_CUSE + + RTE_SDK_USER + RTE_SDK_CUSE + + QEMU_DIR + QEMU_DIR_USER + QEMU_DIR_CUSE + QEMU_BIN + +In case that any of these options is defined, then configuration must be updated. +All paths to the tools are now stored inside ``PATHS`` dictionary. Please +refer to the :ref:`paths-documentation` and update your configuration where necessary. + +Configuration change via CLI +============================ + +In previous releases it was possible to modify selected configuration options +(mostly VNF specific) via command line interface, i.e. by ``--test-params`` +argument. This concept has been generalized in Danube release and it is +possible to modify any configuration parameter via CLI or via **Parameters** +section of the testcase definition. Old configuration options were obsoleted +and it is required to specify configuration parameter name in the same form +as it is defined inside configuration file, i.e. in uppercase. Please +refer to the :ref:`overriding-parameters-documentation` for additional details. + +**NOTE:** In case that execution of VSPERF is automated by scripts (e.g. for +CI purposes), then these scripts must be checked and updated too. It means, +that any occurrence of + +.. code:: bash + + guest_loopback + vanilla_tgen_port1_ip + vanilla_tgen_port1_mac + vanilla_tgen_port2_ip + vanilla_tgen_port2_mac + tunnel_type + +shall be changed to the uppercase form and data type of entered values must +match to data types of original values from configuration files. + +In case that ``guest_nic1_name`` or ``guest_nic2_name`` is changed, +then new dictionary ``GUEST_NICS`` must be modified accordingly. +Please see :ref:`configuration-of-guest-options` and ``conf/04_vnf.conf`` for additional +details. + +Traffic configuration via CLI +============================= + +In previous releases it was possible to modify selected attributes of generated +traffic via command line interface. This concept has been enhanced in Danube +release and it is now possible to modify all traffic specific options via +CLI or by ``TRAFFIC`` dictionary in configuration file. Detailed description +is available at :ref:`configuration-of-traffic-dictionary` section of documentation. + +Please check your automated scripts for VSPERF execution for following CLI +parameters and update them according to the documentation: + +.. code:: bash + + bidir + duration + frame_rate + iload + lossrate + multistream + pkt_sizes + pre-installed_flows + rfc2544_tests + stream_type + traffic_type + diff --git a/docs/testing/user/userguide/integration.rst b/docs/testing/user/userguide/integration.rst new file mode 100644 index 00000000..83b29da6 --- /dev/null +++ b/docs/testing/user/userguide/integration.rst @@ -0,0 +1,504 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +.. _integration-tests: + +Integration tests +================= + +VSPERF includes a set of integration tests defined in conf/integration. +These tests can be run by specifying --integration as a parameter to vsperf. +Current tests in conf/integration include switch functionality and Overlay +tests. + +Tests in the conf/integration can be used to test scaling of different switch +configurations by adding steps into the test case. + +For the overlay tests VSPERF supports VXLAN, GRE and GENEVE tunneling protocols. +Testing of these protocols is limited to unidirectional traffic and +P2P (Physical to Physical scenarios). + +NOTE: The configuration for overlay tests provided in this guide is for +unidirectional traffic only. + +Executing Integration Tests +--------------------------- + +To execute integration tests VSPERF is run with the integration parameter. To +view the current test list simply execute the following command: + +.. code-block:: console + + ./vsperf --integration --list + +The standard tests included are defined inside the +``conf/integration/01_testcases.conf`` file. + +Executing Tunnel encapsulation tests +------------------------------------ + +The VXLAN OVS DPDK encapsulation tests requires IPs, MAC addresses, +bridge names and WHITELIST_NICS for DPDK. + +NOTE: Only Ixia traffic generators currently support the execution of the tunnel +encapsulation tests. Support for other traffic generators may come in a future +release. + +Default values are already provided. To customize for your environment, override +the following variables in you user_settings.py file: + + .. code-block:: python + + # Variables defined in conf/integration/02_vswitch.conf + # Tunnel endpoint for Overlay P2P deployment scenario + # used for br0 + VTEP_IP1 = '192.168.0.1/24' + + # Used as remote_ip in adding OVS tunnel port and + # to set ARP entry in OVS (e.g. tnl/arp/set br-ext 192.168.240.10 02:00:00:00:00:02 + VTEP_IP2 = '192.168.240.10' + + # Network to use when adding a route for inner frame data + VTEP_IP2_SUBNET = '192.168.240.0/24' + + # Bridge names + TUNNEL_INTEGRATION_BRIDGE = 'br0' + TUNNEL_EXTERNAL_BRIDGE = 'br-ext' + + # IP of br-ext + TUNNEL_EXTERNAL_BRIDGE_IP = '192.168.240.1/24' + + # vxlan|gre|geneve + TUNNEL_TYPE = 'vxlan' + + # Variables defined conf/integration/03_traffic.conf + # For OP2P deployment scenario + TRAFFICGEN_PORT1_MAC = '02:00:00:00:00:01' + TRAFFICGEN_PORT2_MAC = '02:00:00:00:00:02' + TRAFFICGEN_PORT1_IP = '1.1.1.1' + TRAFFICGEN_PORT2_IP = '192.168.240.10' + +To run VXLAN encapsulation tests: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'TUNNEL_TYPE=vxlan' overlay_p2p_tput + +To run GRE encapsulation tests: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'TUNNEL_TYPE=gre' overlay_p2p_tput + +To run GENEVE encapsulation tests: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'TUNNEL_TYPE=geneve' overlay_p2p_tput + +To run OVS NATIVE tunnel tests (VXLAN/GRE/GENEVE): + +1. Install the OVS kernel modules + + .. code:: console + + cd src/ovs/ovs + sudo -E make modules_install + +2. Set the following variables: + + .. code-block:: python + + VSWITCH = 'OvsVanilla' + # Specify vport_* kernel module to test. + PATHS['vswitch']['OvsVanilla']['src']['modules'] = [ + 'vport_vxlan', + 'vport_gre', + 'vport_geneve', + 'datapath/linux/openvswitch.ko', + ] + + **NOTE:** In case, that Vanilla OVS is installed from binary package, then + please set ``PATHS['vswitch']['OvsVanilla']['bin']['modules']`` instead. + +3. Run tests: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'TUNNEL_TYPE=vxlan' overlay_p2p_tput + + +Executing VXLAN decapsulation tests +------------------------------------ + +To run VXLAN decapsulation tests: + +1. Set the variables used in "Executing Tunnel encapsulation tests" + +2. Set dstmac of DUT_NIC2_MAC to the MAC adddress of the 2nd NIC of your DUT + + .. code-block:: python + + DUT_NIC2_MAC = '<DUT NIC2 MAC>' + +3. Run test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration overlay_p2p_decap_cont + +If you want to use different values for your VXLAN frame, you may set: + + .. code-block:: python + + VXLAN_FRAME_L3 = {'proto': 'udp', + 'packetsize': 64, + 'srcip': TRAFFICGEN_PORT1_IP, + 'dstip': '192.168.240.1', + } + VXLAN_FRAME_L4 = {'srcport': 4789, + 'dstport': 4789, + 'vni': VXLAN_VNI, + 'inner_srcmac': '01:02:03:04:05:06', + 'inner_dstmac': '06:05:04:03:02:01', + 'inner_srcip': '192.168.0.10', + 'inner_dstip': '192.168.240.9', + 'inner_proto': 'udp', + 'inner_srcport': 3000, + 'inner_dstport': 3001, + } + + +Executing GRE decapsulation tests +--------------------------------- + +To run GRE decapsulation tests: + +1. Set the variables used in "Executing Tunnel encapsulation tests" + +2. Set dstmac of DUT_NIC2_MAC to the MAC adddress of the 2nd NIC of your DUT + + .. code-block:: python + + DUT_NIC2_MAC = '<DUT NIC2 MAC>' + +3. Run test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --test-params 'TUNNEL_TYPE=gre' \ + --integration overlay_p2p_decap_cont + + +If you want to use different values for your GRE frame, you may set: + + .. code-block:: python + + GRE_FRAME_L3 = {'proto': 'gre', + 'packetsize': 64, + 'srcip': TRAFFICGEN_PORT1_IP, + 'dstip': '192.168.240.1', + } + + GRE_FRAME_L4 = {'srcport': 0, + 'dstport': 0 + 'inner_srcmac': '01:02:03:04:05:06', + 'inner_dstmac': '06:05:04:03:02:01', + 'inner_srcip': '192.168.0.10', + 'inner_dstip': '192.168.240.9', + 'inner_proto': 'udp', + 'inner_srcport': 3000, + 'inner_dstport': 3001, + } + + +Executing GENEVE decapsulation tests +------------------------------------ + +IxNet 7.3X does not have native support of GENEVE protocol. The +template, GeneveIxNetTemplate.xml_ClearText.xml, should be imported +into IxNET for this testcase to work. + +To import the template do: + +1. Run the IxNetwork TCL Server +2. Click on the Traffic menu +3. Click on the Traffic actions and click Edit Packet Templates +4. On the Template editor window, click Import. Select the template + located at ``3rd_party/ixia/GeneveIxNetTemplate.xml_ClearText.xml`` + and click import. +5. Restart the TCL Server. + +To run GENEVE decapsulation tests: + +1. Set the variables used in "Executing Tunnel encapsulation tests" + +2. Set dstmac of DUT_NIC2_MAC to the MAC adddress of the 2nd NIC of your DUT + + .. code-block:: python + + DUT_NIC2_MAC = '<DUT NIC2 MAC>' + +3. Run test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --test-params 'tunnel_type=geneve' \ + --integration overlay_p2p_decap_cont + + +If you want to use different values for your GENEVE frame, you may set: + + .. code-block:: python + + GENEVE_FRAME_L3 = {'proto': 'udp', + 'packetsize': 64, + 'srcip': TRAFFICGEN_PORT1_IP, + 'dstip': '192.168.240.1', + } + + GENEVE_FRAME_L4 = {'srcport': 6081, + 'dstport': 6081, + 'geneve_vni': 0, + 'inner_srcmac': '01:02:03:04:05:06', + 'inner_dstmac': '06:05:04:03:02:01', + 'inner_srcip': '192.168.0.10', + 'inner_dstip': '192.168.240.9', + 'inner_proto': 'udp', + 'inner_srcport': 3000, + 'inner_dstport': 3001, + } + + +Executing Native/Vanilla OVS VXLAN decapsulation tests +------------------------------------------------------ + +To run VXLAN decapsulation tests: + +1. Set the following variables in your user_settings.py file: + + .. code-block:: python + + PATHS['vswitch']['OvsVanilla']['src']['modules'] = [ + 'vport_vxlan', + 'datapath/linux/openvswitch.ko', + ] + + DUT_NIC1_MAC = '<DUT NIC1 MAC ADDRESS>' + + TRAFFICGEN_PORT1_IP = '172.16.1.2' + TRAFFICGEN_PORT2_IP = '192.168.1.11' + + VTEP_IP1 = '172.16.1.2/24' + VTEP_IP2 = '192.168.1.1' + VTEP_IP2_SUBNET = '192.168.1.0/24' + TUNNEL_EXTERNAL_BRIDGE_IP = '172.16.1.1/24' + TUNNEL_INT_BRIDGE_IP = '192.168.1.1' + + VXLAN_FRAME_L2 = {'srcmac': + '01:02:03:04:05:06', + 'dstmac': DUT_NIC1_MAC + } + + VXLAN_FRAME_L3 = {'proto': 'udp', + 'packetsize': 64, + 'srcip': TRAFFICGEN_PORT1_IP, + 'dstip': '172.16.1.1', + } + + VXLAN_FRAME_L4 = { + 'srcport': 4789, + 'dstport': 4789, + 'protocolpad': 'true', + 'vni': 99, + 'inner_srcmac': '01:02:03:04:05:06', + 'inner_dstmac': '06:05:04:03:02:01', + 'inner_srcip': '192.168.1.2', + 'inner_dstip': TRAFFICGEN_PORT2_IP, + 'inner_proto': 'udp', + 'inner_srcport': 3000, + 'inner_dstport': 3001, + } + + **NOTE:** In case, that Vanilla OVS is installed from binary package, then + please set ``PATHS['vswitch']['OvsVanilla']['bin']['modules']`` instead. + +2. Run test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'tunnel_type=vxlan' overlay_p2p_decap_cont + +Executing Native/Vanilla OVS GRE decapsulation tests +---------------------------------------------------- + +To run GRE decapsulation tests: + +1. Set the following variables in your user_settings.py file: + + .. code-block:: python + + PATHS['vswitch']['OvsVanilla']['src']['modules'] = [ + 'vport_gre', + 'datapath/linux/openvswitch.ko', + ] + + DUT_NIC1_MAC = '<DUT NIC1 MAC ADDRESS>' + + TRAFFICGEN_PORT1_IP = '172.16.1.2' + TRAFFICGEN_PORT2_IP = '192.168.1.11' + + VTEP_IP1 = '172.16.1.2/24' + VTEP_IP2 = '192.168.1.1' + VTEP_IP2_SUBNET = '192.168.1.0/24' + TUNNEL_EXTERNAL_BRIDGE_IP = '172.16.1.1/24' + TUNNEL_INT_BRIDGE_IP = '192.168.1.1' + + GRE_FRAME_L2 = {'srcmac': + '01:02:03:04:05:06', + 'dstmac': DUT_NIC1_MAC + } + + GRE_FRAME_L3 = {'proto': 'udp', + 'packetsize': 64, + 'srcip': TRAFFICGEN_PORT1_IP, + 'dstip': '172.16.1.1', + } + + GRE_FRAME_L4 = { + 'srcport': 4789, + 'dstport': 4789, + 'protocolpad': 'true', + 'inner_srcmac': '01:02:03:04:05:06', + 'inner_dstmac': '06:05:04:03:02:01', + 'inner_srcip': '192.168.1.2', + 'inner_dstip': TRAFFICGEN_PORT2_IP, + 'inner_proto': 'udp', + 'inner_srcport': 3000, + 'inner_dstport': 3001, + } + + **NOTE:** In case, that Vanilla OVS is installed from binary package, then + please set ``PATHS['vswitch']['OvsVanilla']['bin']['modules']`` instead. + +2. Run test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'tunnel_type=gre' overlay_p2p_decap_cont + +Executing Native/Vanilla OVS GENEVE decapsulation tests +------------------------------------------------------- + +To run GENEVE decapsulation tests: + +1. Set the following variables in your user_settings.py file: + + .. code-block:: python + + PATHS['vswitch']['OvsVanilla']['src']['modules'] = [ + 'vport_geneve', + 'datapath/linux/openvswitch.ko', + ] + + DUT_NIC1_MAC = '<DUT NIC1 MAC ADDRESS>' + + TRAFFICGEN_PORT1_IP = '172.16.1.2' + TRAFFICGEN_PORT2_IP = '192.168.1.11' + + VTEP_IP1 = '172.16.1.2/24' + VTEP_IP2 = '192.168.1.1' + VTEP_IP2_SUBNET = '192.168.1.0/24' + TUNNEL_EXTERNAL_BRIDGE_IP = '172.16.1.1/24' + TUNNEL_INT_BRIDGE_IP = '192.168.1.1' + + GENEVE_FRAME_L2 = {'srcmac': + '01:02:03:04:05:06', + 'dstmac': DUT_NIC1_MAC + } + + GENEVE_FRAME_L3 = {'proto': 'udp', + 'packetsize': 64, + 'srcip': TRAFFICGEN_PORT1_IP, + 'dstip': '172.16.1.1', + } + + GENEVE_FRAME_L4 = {'srcport': 6081, + 'dstport': 6081, + 'protocolpad': 'true', + 'geneve_vni': 0, + 'inner_srcmac': '01:02:03:04:05:06', + 'inner_dstmac': '06:05:04:03:02:01', + 'inner_srcip': '192.168.1.2', + 'inner_dstip': TRAFFICGEN_PORT2_IP, + 'inner_proto': 'udp', + 'inner_srcport': 3000, + 'inner_dstport': 3001, + } + + **NOTE:** In case, that Vanilla OVS is installed from binary package, then + please set ``PATHS['vswitch']['OvsVanilla']['bin']['modules']`` instead. + +2. Run test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + --test-params 'tunnel_type=geneve' overlay_p2p_decap_cont + + +Executing Tunnel encapsulation+decapsulation tests +-------------------------------------------------- + +The OVS DPDK encapsulation_decapsulation tests requires IPs, MAC addresses, +bridge names and WHITELIST_NICS for DPDK. + +The test cases can test the tunneling encap and decap without using any ingress +overlay traffic as compared to above test cases. To achieve this the OVS is +configured to perform encap and decap in a series on the same traffic stream as +given below. + +TRAFFIC-IN --> [ENCAP] --> [MOD-PKT] --> [DECAP] --> TRAFFIC-OUT + + +Default values are already provided. To customize for your environment, override +the following variables in you user_settings.py file: + + .. code-block:: python + + # Variables defined in conf/integration/02_vswitch.conf + + # Bridge names + TUNNEL_EXTERNAL_BRIDGE1 = 'br-phy1' + TUNNEL_EXTERNAL_BRIDGE2 = 'br-phy2' + TUNNEL_MODIFY_BRIDGE1 = 'br-mod1' + TUNNEL_MODIFY_BRIDGE2 = 'br-mod2' + + # IP of br-mod1 + TUNNEL_MODIFY_BRIDGE_IP1 = '10.0.0.1/24' + + # Mac of br-mod1 + TUNNEL_MODIFY_BRIDGE_MAC1 = '00:00:10:00:00:01' + + # IP of br-mod2 + TUNNEL_MODIFY_BRIDGE_IP2 = '20.0.0.1/24' + + #Mac of br-mod2 + TUNNEL_MODIFY_BRIDGE_MAC2 = '00:00:20:00:00:01' + + # vxlan|gre|geneve, Only VXLAN is supported for now. + TUNNEL_TYPE = 'vxlan' + +To run VXLAN encapsulation+decapsulation tests: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration \ + overlay_p2p_mod_tput diff --git a/docs/testing/user/userguide/teststeps.rst b/docs/testing/user/userguide/teststeps.rst new file mode 100644 index 00000000..870c3d80 --- /dev/null +++ b/docs/testing/user/userguide/teststeps.rst @@ -0,0 +1,667 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +.. _step-driven-tests: + +Step driven tests +================= + +In general, test scenarios are defined by a ``deployment`` used in the particular +test case definition. The chosen deployment scenario will take care of the vSwitch +configuration, deployment of VNFs and it can also affect configuration of a traffic +generator. In order to allow a more flexible way of testcase scripting, VSPERF supports +a detailed step driven testcase definition. It can be used to configure and +program vSwitch, deploy and terminate VNFs, execute a traffic generator, +modify a VSPERF configuration, execute external commands, etc. + +Execution of step driven tests is done on a step by step work flow starting +with step 0 as defined inside the test case. Each step of the test increments +the step number by one which is indicated in the log. + +.. code-block:: console + + (testcases.integration) - Step 0 'vswitch add_vport ['br0']' start + +Step driven tests can be used for both performance and integration testing. +In case of integration test, each step in the test case is validated. If a step +does not pass validation the test will fail and terminate. The test will continue +until a failure is detected or all steps pass. A csv report file is generated after +a test completes with an OK or FAIL result. + +In case of performance test, the validation of steps is not performed and +standard output files with results from traffic generator and underlying OS +details are generated by vsperf. + +Step driven testcases can be used in two different ways: + + # description of full testcase - in this case ``clean`` deployment is used + to indicate that vsperf should neither configure vSwitch nor deploy any VNF. + Test shall perform all required vSwitch configuration and programming and + deploy required number of VNFs. + + # modification of existing deployment - in this case, any of supported + deployments can be used to perform initial vSwitch configuration and + deployment of VNFs. Additional actions defined by TestSteps can be used + to alter vSwitch configuration or deploy additional VNFs. After the last + step is processed, the test execution will continue with traffic execution. + +Test objects and their functions +-------------------------------- + +Every test step can call a function of one of the supported test objects. The list +of supported objects and their most common functions follows: + + * ``vswitch`` - provides functions for vSwitch configuration + + List of supported functions: + + * ``add_switch br_name`` - creates a new switch (bridge) with given ``br_name`` + * ``del_switch br_name`` - deletes switch (bridge) with given ``br_name`` + * ``add_phy_port br_name`` - adds a physical port into bridge specified by ``br_name`` + * ``add_vport br_name`` - adds a virtual port into bridge specified by ``br_name`` + * ``del_port br_name port_name`` - removes physical or virtual port specified by + ``port_name`` from bridge ``br_name`` + * ``add_flow br_name flow`` - adds flow specified by ``flow`` dictionary into + the bridge ``br_name``; Content of flow dictionary will be passed to the vSwitch. + In case of Open vSwitch it will be passed to the ``ovs-ofctl add-flow`` command. + Please see Open vSwitch documentation for the list of supported flow parameters. + * ``del_flow br_name [flow]`` - deletes flow specified by ``flow`` dictionary from + bridge ``br_name``; In case that optional parameter ``flow`` is not specified + or set to an empty dictionary ``{}``, then all flows from bridge ``br_name`` + will be deleted. + * ``dump_flows br_name`` - dumps all flows from bridge specified by ``br_name`` + * ``enable_stp br_name`` - enables Spanning Tree Protocol for bridge ``br_name`` + * ``disable_stp br_name`` - disables Spanning Tree Protocol for bridge ``br_name`` + * ``enable_rstp br_name`` - enables Rapid Spanning Tree Protocol for bridge ``br_name`` + * ``disable_rstp br_name`` - disables Rapid Spanning Tree Protocol for bridge ``br_name`` + + Examples: + + .. code-block:: python + + ['vswitch', 'add_switch', 'int_br0'] + + ['vswitch', 'del_switch', 'int_br0'] + + ['vswitch', 'add_phy_port', 'int_br0'] + + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'] + + ['vswitch', 'add_flow', 'int_br0', {'in_port': '1', 'actions': ['output:2'], + 'idle_timeout': '0'}], + + ['vswitch', 'enable_rstp', 'int_br0'] + + * ``vnf[ID]`` - provides functions for deployment and termination of VNFs; Optional + alfanumerical ``ID`` is used for VNF identification in case that testcase + deploys multiple VNFs. + + List of supported functions: + + * ``start`` - starts a VNF based on VSPERF configuration + * ``stop`` - gracefully terminates given VNF + + Examples: + + .. code-block:: python + + ['vnf1', 'start'] + ['vnf2', 'start'] + ['vnf2', 'stop'] + ['vnf1', 'stop'] + + * ``trafficgen`` - triggers traffic generation + + List of supported functions: + + * ``send_traffic traffic`` - starts a traffic based on the vsperf configuration + and given ``traffic`` dictionary. More details about ``traffic`` dictionary + and its possible values are available at :ref:`Traffic Generator Integration Guide + <step-5-supported-traffic-types>` + + Examples: + + .. code-block:: python + + ['trafficgen', 'send_traffic', {'traffic_type' : 'rfc2544_throughput'}] + + ['trafficgen', 'send_traffic', {'traffic_type' : 'rfc2544_back2back', 'bidir' : 'True'}] + + * ``settings`` - reads or modifies VSPERF configuration + + List of supported functions: + + * ``getValue param`` - returns value of given ``param`` + * ``setValue param value`` - sets value of ``param`` to given ``value`` + + Examples: + + .. code-block:: python + + ['settings', 'getValue', 'TOOLS'] + + ['settings', 'setValue', 'GUEST_USERNAME', ['root']] + + * ``namespace`` - creates or modifies network namespaces + + List of supported functions: + + * ``create_namespace name`` - creates new namespace with given ``name`` + * ``delete_namespace name`` - deletes namespace specified by its ``name`` + * ``assign_port_to_namespace port name [port_up]`` - assigns NIC specified by ``port`` + into given namespace ``name``; If optional parameter ``port_up`` is set to ``True``, + then port will be brought up. + * ``add_ip_to_namespace_eth port name addr cidr`` - assigns an IP address ``addr``/``cidr`` + to the NIC specified by ``port`` within namespace ``name`` + * ``reset_port_to_root port name`` - returns given ``port`` from namespace ``name`` back + to the root namespace + + Examples: + + .. code-block:: python + + ['namespace', 'create_namespace', 'testns'] + + ['namespace', 'assign_port_to_namespace', 'eth0', 'testns'] + + * ``veth`` - manipulates with eth and veth devices + + List of supported functions: + + * ``add_veth_port port peer_port`` - adds a pair of veth ports named ``port`` and + ``peer_port`` + * ``del_veth_port port peer_port`` - deletes a veth port pair specified by ``port`` + and ``peer_port`` + * ``bring_up_eth_port eth_port [namespace]`` - brings up ``eth_port`` in (optional) + ``namespace`` + + Examples: + + .. code-block:: python + + ['veth', 'add_veth_port', 'veth', 'veth1'] + + ['veth', 'bring_up_eth_port', 'eth1'] + + * ``tools`` - provides a set of helper functions + + List of supported functions: + + * ``Assert condition`` - evaluates given ``condition`` and raises ``AssertionError`` + in case that condition is not ``True`` + * ``Eval expression`` - evaluates given expression as a python code and returns + its result + * ``Exec command [regex]`` - executes a shell command and filters its output by + (optional) regular expression + + Examples: + + .. code-block:: python + + ['tools', 'exec', 'numactl -H', 'available: ([0-9]+)'] + ['tools', 'assert', '#STEP[-1][0]>1'] + + * ``wait`` - is used for test case interruption. This object doesn't have + any functions. Once reached, vsperf will pause test execution and waits + for press of ``Enter key``. It can be used during testcase design + for debugging purposes. + + Examples: + + .. code-block:: python + + ['wait'] + +Test Macros +----------- + +Test profiles can include macros as part of the test step. Each step in the +profile may return a value such as a port name. Recall macros use #STEP to +indicate the recalled value inside the return structure. If the method the +test step calls returns a value it can be later recalled, for example: + +.. code-block:: python + + { + "Name": "vswitch_add_del_vport", + "Deployment": "clean", + "Description": "vSwitch - add and delete virtual port", + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_vport', 'int_br0'], # STEP 1 + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], # STEP 2 + ['vswitch', 'del_switch', 'int_br0'], # STEP 3 + ] + } + +This test profile uses the vswitch add_vport method which returns a string +value of the port added. This is later called by the del_port method using the +name from step 1. + +It is also possible to use negative indexes in step macros. In that case +``#STEP[-1]`` will refer to the result from previous step, ``#STEP[-2]`` +will refer to result of step called before previous step, etc. It means, +that you could change ``STEP 2`` from previous example to achieve the same +functionality: + +.. code-block:: python + + ['vswitch', 'del_port', 'int_br0', '#STEP[-1][0]'], # STEP 2 + +Also commonly used steps can be created as a separate profile. + +.. code-block:: python + + STEP_VSWITCH_PVP_INIT = [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + ['vswitch', 'add_vport', 'int_br0'], # STEP 3 + ['vswitch', 'add_vport', 'int_br0'], # STEP 4 + ] + +This profile can then be used inside other testcases + +.. code-block:: python + + { + "Name": "vswitch_pvp", + "Deployment": "clean", + "Description": "vSwitch - configure switch and one vnf", + "TestSteps": STEP_VSWITCH_PVP_INIT + + [ + ['vnf', 'start'], + ['vnf', 'stop'], + ] + + STEP_VSWITCH_PVP_FINIT + } + +HelloWorld and other basic Testcases +------------------------------------ + +The following examples are for demonstration purposes. +You can run them by copying and pasting into the +conf/integration/01_testcases.conf file. +A command-line instruction is shown at the end of each +example. + +HelloWorld +^^^^^^^^^^ + +The first example is a HelloWorld testcase. +It simply creates a bridge with 2 physical ports, then sets up a flow to drop +incoming packets from the port that was instantiated at the STEP #1. +There's no interaction with the traffic generator. +Then the flow, the 2 ports and the bridge are deleted. +'add_phy_port' method creates a 'dpdk' type interface that will manage the +physical port. The string value returned is the port name that will be referred +by 'del_port' later on. + +.. code-block:: python + + { + "Name": "HelloWorld", + "Description": "My first testcase", + "Deployment": "clean", + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'actions': ['drop'], 'idle_timeout': '0'}], + ['vswitch', 'del_flow', 'int_br0'], + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'], + ['vswitch', 'del_switch', 'int_br0'], + ] + + }, + +To run HelloWorld test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration HelloWorld + +Specify a Flow by the IP address +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +The next example shows how to explicitly set up a flow by specifying a +destination IP address. +All packets received from the port created at STEP #1 that have a destination +IP address = 90.90.90.90 will be forwarded to the port created at the STEP #2. + +.. code-block:: python + + { + "Name": "p2p_rule_l3da", + "Description": "Phy2Phy with rule on L3 Dest Addr", + "Deployment": "clean", + "biDirectional": "False", + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_dst': '90.90.90.90', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + ['trafficgen', 'send_traffic', \ + {'traffic_type' : 'rfc2544_continuous'}], + ['vswitch', 'dump_flows', 'int_br0'], # STEP 5 + ['vswitch', 'del_flow', 'int_br0'], # STEP 7 == del-flows + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'], + ['vswitch', 'del_switch', 'int_br0'], + ] + }, + +To run the test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration p2p_rule_l3da + +Multistream feature +^^^^^^^^^^^^^^^^^^^ + +The next testcase uses the multistream feature. +The traffic generator will send packets with different UDP ports. +That is accomplished by using "Stream Type" and "MultiStream" keywords. +4 different flows are set to forward all incoming packets. + +.. code-block:: python + + { + "Name": "multistream_l4", + "Description": "Multistream on UDP ports", + "Deployment": "clean", + "Parameters": { + 'TRAFFIC' : { + "multistream": 4, + "stream_type": "L4", + }, + }, + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + # Setup Flows + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_proto': '17', 'udp_dst': '0', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_proto': '17', 'udp_dst': '1', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_proto': '17', 'udp_dst': '2', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_proto': '17', 'udp_dst': '3', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + # Send mono-dir traffic + ['trafficgen', 'send_traffic', \ + {'traffic_type' : 'rfc2544_continuous', \ + 'bidir' : 'False'}], + # Clean up + ['vswitch', 'del_flow', 'int_br0'], + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'], + ['vswitch', 'del_switch', 'int_br0'], + ] + }, + +To run the test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration multistream_l4 + +PVP with a VM Replacement +^^^^^^^^^^^^^^^^^^^^^^^^^ + +This example launches a 1st VM in a PVP topology, then the VM is replaced +by another VM. +When VNF setup parameter in ./conf/04_vnf.conf is "QemuDpdkVhostUser" +'add_vport' method creates a 'dpdkvhostuser' type port to connect a VM. + +.. code-block:: python + + { + "Name": "ex_replace_vm", + "Description": "PVP with VM replacement", + "Deployment": "clean", + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + ['vswitch', 'add_vport', 'int_br0'], # STEP 3 vm1 + ['vswitch', 'add_vport', 'int_br0'], # STEP 4 + + # Setup Flows + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'actions': ['output:#STEP[3][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[4][1]', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[2][1]', \ + 'actions': ['output:#STEP[4][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[3][1]', \ + 'actions': ['output:#STEP[1][1]'], 'idle_timeout': '0'}], + + # Start VM 1 + ['vnf1', 'start'], + # Now we want to replace VM 1 with another VM + ['vnf1', 'stop'], + + ['vswitch', 'add_vport', 'int_br0'], # STEP 11 vm2 + ['vswitch', 'add_vport', 'int_br0'], # STEP 12 + ['vswitch', 'del_flow', 'int_br0'], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'actions': ['output:#STEP[11][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[12][1]', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + + # Start VM 2 + ['vnf2', 'start'], + ['vnf2', 'stop'], + ['vswitch', 'dump_flows', 'int_br0'], + + # Clean up + ['vswitch', 'del_flow', 'int_br0'], + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[3][0]'], # vm1 + ['vswitch', 'del_port', 'int_br0', '#STEP[4][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[11][0]'], # vm2 + ['vswitch', 'del_port', 'int_br0', '#STEP[12][0]'], + ['vswitch', 'del_switch', 'int_br0'], + ] + }, + +To run the test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration ex_replace_vm + +VM with a Linux bridge +^^^^^^^^^^^^^^^^^^^^^^ + +This example setups a PVP topology and routes traffic to the VM based on +the destination IP address. A command-line parameter is used to select a Linux +bridge as a guest loopback application. It is also possible to select a guest +loopback application by a configuration option ``GUEST_LOOPBACK``. + +.. code-block:: python + + { + "Name": "ex_pvp_rule_l3da", + "Description": "PVP with flow on L3 Dest Addr", + "Deployment": "clean", + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + ['vswitch', 'add_vport', 'int_br0'], # STEP 3 vm1 + ['vswitch', 'add_vport', 'int_br0'], # STEP 4 + # Setup Flows + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_dst': '90.90.90.90', \ + 'actions': ['output:#STEP[3][1]'], 'idle_timeout': '0'}], + # Each pkt from the VM is forwarded to the 2nd dpdk port + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[4][1]', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + # Start VMs + ['vnf1', 'start'], + ['trafficgen', 'send_traffic', \ + {'traffic_type' : 'rfc2544_continuous', \ + 'bidir' : 'False'}], + ['vnf1', 'stop'], + # Clean up + ['vswitch', 'dump_flows', 'int_br0'], # STEP 10 + ['vswitch', 'del_flow', 'int_br0'], # STEP 11 + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[3][0]'], # vm1 ports + ['vswitch', 'del_port', 'int_br0', '#STEP[4][0]'], + ['vswitch', 'del_switch', 'int_br0'], + ] + }, + +To run the test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --test-params \ + "GUEST_LOOPBACK=['linux_bridge']" --integration ex_pvp_rule_l3da + +Forward packets based on UDP port +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +This examples launches 2 VMs connected in parallel. +Incoming packets will be forwarded to one specific VM depending on the +destination UDP port. + +.. code-block:: python + + { + "Name": "ex_2pvp_rule_l4dp", + "Description": "2 PVP with flows on L4 Dest Port", + "Deployment": "clean", + "Parameters": { + 'TRAFFIC' : { + "multistream": 2, + "stream_type": "L4", + }, + }, + "TestSteps": [ + ['vswitch', 'add_switch', 'int_br0'], # STEP 0 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 1 + ['vswitch', 'add_phy_port', 'int_br0'], # STEP 2 + ['vswitch', 'add_vport', 'int_br0'], # STEP 3 vm1 + ['vswitch', 'add_vport', 'int_br0'], # STEP 4 + ['vswitch', 'add_vport', 'int_br0'], # STEP 5 vm2 + ['vswitch', 'add_vport', 'int_br0'], # STEP 6 + # Setup Flows to reply ICMPv6 and similar packets, so to + # avoid flooding internal port with their re-transmissions + ['vswitch', 'add_flow', 'int_br0', \ + {'priority': '1', 'dl_src': '00:00:00:00:00:01', \ + 'actions': ['output:#STEP[3][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', \ + {'priority': '1', 'dl_src': '00:00:00:00:00:02', \ + 'actions': ['output:#STEP[4][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', \ + {'priority': '1', 'dl_src': '00:00:00:00:00:03', \ + 'actions': ['output:#STEP[5][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', \ + {'priority': '1', 'dl_src': '00:00:00:00:00:04', \ + 'actions': ['output:#STEP[6][1]'], 'idle_timeout': '0'}], + # Forward UDP packets depending on dest port + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_proto': '17', 'udp_dst': '0', \ + 'actions': ['output:#STEP[3][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[1][1]', \ + 'dl_type': '0x0800', 'nw_proto': '17', 'udp_dst': '1', \ + 'actions': ['output:#STEP[5][1]'], 'idle_timeout': '0'}], + # Send VM output to phy port #2 + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[4][1]', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'int_br0', {'in_port': '#STEP[6][1]', \ + 'actions': ['output:#STEP[2][1]'], 'idle_timeout': '0'}], + # Start VMs + ['vnf1', 'start'], # STEP 16 + ['vnf2', 'start'], # STEP 17 + ['trafficgen', 'send_traffic', \ + {'traffic_type' : 'rfc2544_continuous', \ + 'bidir' : 'False'}], + ['vnf1', 'stop'], + ['vnf2', 'stop'], + ['vswitch', 'dump_flows', 'int_br0'], + # Clean up + ['vswitch', 'del_flow', 'int_br0'], + ['vswitch', 'del_port', 'int_br0', '#STEP[1][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[3][0]'], # vm1 ports + ['vswitch', 'del_port', 'int_br0', '#STEP[4][0]'], + ['vswitch', 'del_port', 'int_br0', '#STEP[5][0]'], # vm2 ports + ['vswitch', 'del_port', 'int_br0', '#STEP[6][0]'], + ['vswitch', 'del_switch', 'int_br0'], + ] + }, + +To run the test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py --integration ex_2pvp_rule_l4dp + +Modification of existing PVVP deployment +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +This is an example of modification of a standard deployment scenario with additional TestSteps. +Standard PVVP scenario is used to configure a vSwitch and to deploy two VNFs connected +in series. Additional TestSteps will deploy a 3rd VNF and connect it in parallel to +already configured VNFs. Traffic generator is instructed (by Multistream feature) to send +two separate traffic streams. One stream will be sent to the standalone VNF and second +to two chained VNFs. + +In case, that test is defined as a performance test, then traffic results will be collected +and available in both csv and rst report files. + +.. code-block:: python + + { + "Name": "pvvp_pvp_cont", + "Deployment": "pvvp", + "Description": "PVVP and PVP in parallel with Continuous Stream", + "Parameters" : { + "TRAFFIC" : { + "traffic_type" : "rfc2544_continuous", + "multistream": 2, + }, + }, + "TestSteps": [ + ['vswitch', 'add_vport', 'br0'], + ['vswitch', 'add_vport', 'br0'], + # priority must be higher than default 32768, otherwise flows won't match + ['vswitch', 'add_flow', 'br0', + {'in_port': '1', 'actions': ['output:#STEP[-2][1]'], 'idle_timeout': '0', 'dl_type':'0x0800', + 'nw_proto':'17', 'tp_dst':'0', 'priority': '33000'}], + ['vswitch', 'add_flow', 'br0', + {'in_port': '2', 'actions': ['output:#STEP[-2][1]'], 'idle_timeout': '0', 'dl_type':'0x0800', + 'nw_proto':'17', 'tp_dst':'0', 'priority': '33000'}], + ['vswitch', 'add_flow', 'br0', {'in_port': '#STEP[-4][1]', 'actions': ['output:1'], + 'idle_timeout': '0'}], + ['vswitch', 'add_flow', 'br0', {'in_port': '#STEP[-4][1]', 'actions': ['output:2'], + 'idle_timeout': '0'}], + ['vswitch', 'dump_flows', 'br0'], + ['vnf1', 'start'], + ] + }, + +To run the test: + + .. code-block:: console + + ./vsperf --conf-file user_settings.py pvvp_pvp_cont + diff --git a/docs/testing/user/userguide/testusage.rst b/docs/testing/user/userguide/testusage.rst new file mode 100644 index 00000000..c6037aaf --- /dev/null +++ b/docs/testing/user/userguide/testusage.rst @@ -0,0 +1,848 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +vSwitchPerf test suites userguide +--------------------------------- + +General +^^^^^^^ + +VSPERF requires a traffic generators to run tests, automated traffic gen +support in VSPERF includes: + +- IXIA traffic generator (IxNetwork hardware) and a machine that runs the IXIA + client software. +- Spirent traffic generator (TestCenter hardware chassis or TestCenter virtual + in a VM) and a VM to run the Spirent Virtual Deployment Service image, + formerly known as "Spirent LabServer". +- Xena Network traffic generator (Xena hardware chassis) that houses the Xena + Traffic generator modules. +- Moongen software traffic generator. Requires a separate machine running + moongen to execute packet generation. + +If you want to use another traffic generator, please select the :ref:`trafficgen-dummy` +generator. + +VSPERF Installation +^^^^^^^^^^^^^^^^^^^ + +To see the supported Operating Systems, vSwitches and system requirements, +please follow the `installation instructions <vsperf-installation>`. + +Traffic Generator Setup +^^^^^^^^^^^^^^^^^^^^^^^ + +Follow the `Traffic generator instructions <trafficgen-installation>` to +install and configure a suitable traffic generator. + +Cloning and building src dependencies +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +In order to run VSPERF, you will need to download DPDK and OVS. You can +do this manually and build them in a preferred location, OR you could +use vswitchperf/src. The vswitchperf/src directory contains makefiles +that will allow you to clone and build the libraries that VSPERF depends +on, such as DPDK and OVS. To clone and build simply: + +.. code-block:: console + + $ cd src + $ make + +VSPERF can be used with stock OVS (without DPDK support). When build +is finished, the libraries are stored in src_vanilla directory. + +The 'make' builds all options in src: + +* Vanilla OVS +* OVS with vhost_user as the guest access method (with DPDK support) + +The vhost_user build will reside in src/ovs/ +The Vanilla OVS build will reside in vswitchperf/src_vanilla + +To delete a src subdirectory and its contents to allow you to re-clone simply +use: + +.. code-block:: console + + $ make clobber + +Configure the ``./conf/10_custom.conf`` file +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +The ``10_custom.conf`` file is the configuration file that overrides +default configurations in all the other configuration files in ``./conf`` +The supplied ``10_custom.conf`` file **MUST** be modified, as it contains +configuration items for which there are no reasonable default values. + +The configuration items that can be added is not limited to the initial +contents. Any configuration item mentioned in any .conf file in +``./conf`` directory can be added and that item will be overridden by +the custom configuration value. + +Further details about configuration files evaluation and special behaviour +of options with ``GUEST_`` prefix could be found at :ref:`design document +<design-configuration>`. + +Using a custom settings file +^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +If your ``10_custom.conf`` doesn't reside in the ``./conf`` directory +of if you want to use an alternative configuration file, the file can +be passed to ``vsperf`` via the ``--conf-file`` argument. + +.. code-block:: console + + $ ./vsperf --conf-file <path_to_custom_conf> ... + +Note that configuration passed in via the environment (``--load-env``) +or via another command line argument will override both the default and +your custom configuration files. This "priority hierarchy" can be +described like so (1 = max priority): + +1. Testcase definition section ``Parameters`` +2. Command line arguments +3. Environment variables +4. Configuration file(s) + +Further details about configuration files evaluation and special behaviour +of options with ``GUEST_`` prefix could be found at :ref:`design document +<design-configuration>`. + +.. _overriding-parameters-documentation: + +Overriding values defined in configuration files +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +The configuration items can be overridden by command line argument +``--test-params``. In this case, the configuration items and +their values should be passed in form of ``item=value`` and separated +by semicolon. + +Example: + +.. code:: console + + $ ./vsperf --test-params "TRAFFICGEN_DURATION=10;TRAFFICGEN_PKT_SIZES=(128,);" \ + "GUEST_LOOPBACK=['testpmd','l2fwd']" pvvp_tput + +The second option is to override configuration items by ``Parameters`` section +of the test case definition. The configuration items can be added into ``Parameters`` +dictionary with their new values. These values will override values defined in +configuration files or specified by ``--test-params`` command line argument. + +Example: + +.. code:: python + + "Parameters" : {'TRAFFICGEN_PKT_SIZES' : (128,), + 'TRAFFICGEN_DURATION' : 10, + 'GUEST_LOOPBACK' : ['testpmd','l2fwd'], + } + +**NOTE:** In both cases, configuration item names and their values must be specified +in the same form as they are defined inside configuration files. Parameter names +must be specified in uppercase and data types of original and new value must match. +Python syntax rules related to data types and structures must be followed. +For example, parameter ``TRAFFICGEN_PKT_SIZES`` above is defined as a tuple +with a single value ``128``. In this case trailing comma is mandatory, otherwise +value can be wrongly interpreted as a number instead of a tuple and vsperf +execution would fail. Please check configuration files for default values and their +types and use them as a basis for any customized values. In case of any doubt, please +check official python documentation related to data structures like tuples, lists +and dictionaries. + +**NOTE:** Vsperf execution will terminate with runtime error in case, that unknown +parameter name is passed via ``--test-params`` CLI argument or defined in ``Parameters`` +section of test case definition. It is also forbidden to redefine a value of +``TEST_PARAMS`` configuration item via CLI or ``Parameters`` section. + +vloop_vnf +^^^^^^^^^ + +VSPERF uses a VM image called vloop_vnf for looping traffic in the deployment +scenarios involving VMs. The image can be downloaded from +`<http://artifacts.opnfv.org/>`__. + +Please see the installation instructions for information on :ref:`vloop-vnf` +images. + +.. _l2fwd-module: + +l2fwd Kernel Module +^^^^^^^^^^^^^^^^^^^ + +A Kernel Module that provides OSI Layer 2 Ipv4 termination or forwarding with +support for Destination Network Address Translation (DNAT) for both the MAC and +IP addresses. l2fwd can be found in <vswitchperf_dir>/src/l2fwd + +Executing tests +^^^^^^^^^^^^^^^ + +All examples inside these docs assume, that user is inside the VSPERF +directory. VSPERF can be executed from any directory. + +Before running any tests make sure you have root permissions by adding +the following line to /etc/sudoers: + +.. code-block:: console + + username ALL=(ALL) NOPASSWD: ALL + +username in the example above should be replaced with a real username. + +To list the available tests: + +.. code-block:: console + + $ ./vsperf --list + +To run a single test: + +.. code-block:: console + + $ ./vsperf $TESTNAME + +Where $TESTNAME is the name of the vsperf test you would like to run. + +To run a group of tests, for example all tests with a name containing +'RFC2544': + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf --tests="RFC2544" + +To run all tests: + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf + +Some tests allow for configurable parameters, including test duration +(in seconds) as well as packet sizes (in bytes). + +.. code:: bash + + $ ./vsperf --conf-file user_settings.py \ + --tests RFC2544Tput \ + --test-params "TRAFFICGEN_DURATION=10;TRAFFICGEN_PKT_SIZES=(128,)" + +For all available options, check out the help dialog: + +.. code-block:: console + + $ ./vsperf --help + +Executing Vanilla OVS tests +^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +1. If needed, recompile src for all OVS variants + + .. code-block:: console + + $ cd src + $ make distclean + $ make + +2. Update your ``10_custom.conf`` file to use Vanilla OVS: + + .. code-block:: python + + VSWITCH = 'OvsVanilla' + +3. Run test: + + .. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf> + + Please note if you don't want to configure Vanilla OVS through the + configuration file, you can pass it as a CLI argument. + + .. code-block:: console + + $ ./vsperf --vswitch OvsVanilla + + +Executing tests with VMs +^^^^^^^^^^^^^^^^^^^^^^^^ + +To run tests using vhost-user as guest access method: + +1. Set VHOST_METHOD and VNF of your settings file to: + + .. code-block:: python + + VSWITCH = 'OvsDpdkVhost' + VNF = 'QemuDpdkVhost' + +2. If needed, recompile src for all OVS variants + + .. code-block:: console + + $ cd src + $ make distclean + $ make + +3. Run test: + + .. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf + +Executing tests with VMs using Vanilla OVS +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +To run tests using Vanilla OVS: + +1. Set the following variables: + + .. code-block:: python + + VSWITCH = 'OvsVanilla' + VNF = 'QemuVirtioNet' + + VANILLA_TGEN_PORT1_IP = n.n.n.n + VANILLA_TGEN_PORT1_MAC = nn:nn:nn:nn:nn:nn + + VANILLA_TGEN_PORT2_IP = n.n.n.n + VANILLA_TGEN_PORT2_MAC = nn:nn:nn:nn:nn:nn + + VANILLA_BRIDGE_IP = n.n.n.n + + or use ``--test-params`` option + + .. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf \ + --test-params "VANILLA_TGEN_PORT1_IP=n.n.n.n;" \ + "VANILLA_TGEN_PORT1_MAC=nn:nn:nn:nn:nn:nn;" \ + "VANILLA_TGEN_PORT2_IP=n.n.n.n;" \ + "VANILLA_TGEN_PORT2_MAC=nn:nn:nn:nn:nn:nn" + +2. If needed, recompile src for all OVS variants + + .. code-block:: console + + $ cd src + $ make distclean + $ make + +3. Run test: + + .. code-block:: console + + $ ./vsperf --conf-file<path_to_custom_conf>/10_custom.conf + +.. _vpp-test: + +Executing VPP tests +^^^^^^^^^^^^^^^^^^^ + +Currently it is not possible to use standard scenario deployments for execution of +tests with VPP. It means, that deployments ``p2p``, ``pvp``, ``pvvp`` and in general any +:ref:`pxp-deployment` won't work with VPP. However it is possible to use VPP in +:ref:`step-driven-tests`. A basic set of VPP testcases covering ``phy2phy``, ``pvp`` +and ``pvvp`` tests are already prepared. + +List of performance tests with VPP support follows: + +* phy2phy_tput_vpp: VPP: LTD.Throughput.RFC2544.PacketLossRatio +* phy2phy_cont_vpp: VPP: Phy2Phy Continuous Stream +* phy2phy_back2back_vpp: VPP: LTD.Throughput.RFC2544.BackToBackFrames +* pvp_tput_vpp: VPP: LTD.Throughput.RFC2544.PacketLossRatio +* pvp_cont_vpp: VPP: PVP Continuous Stream +* pvp_back2back_vpp: VPP: LTD.Throughput.RFC2544.BackToBackFrames +* pvvp_tput_vpp: VPP: LTD.Throughput.RFC2544.PacketLossRatio +* pvvp_cont_vpp: VPP: PVP Continuous Stream +* pvvp_back2back_vpp: VPP: LTD.Throughput.RFC2544.BackToBackFrames + +In order to execute testcases with VPP it is required to: + +* install VPP manually, see :ref:`vpp-installation` +* configure ``WHITELIST_NICS``, with two physical NICs connected to the traffic generator +* configure traffic generator, see :ref:`trafficgen-installation` + +After that it is possible to execute VPP testcases listed above. + +For example: + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf> phy2phy_tput_vpp + +.. _vfio-pci: + +Using vfio_pci with DPDK +^^^^^^^^^^^^^^^^^^^^^^^^^ + +To use vfio with DPDK instead of igb_uio add into your custom configuration +file the following parameter: + +.. code-block:: python + + PATHS['dpdk']['src']['modules'] = ['uio', 'vfio-pci'] + + +**NOTE:** In case, that DPDK is installed from binary package, then please +set ``PATHS['dpdk']['bin']['modules']`` instead. + +**NOTE:** Please ensure that Intel VT-d is enabled in BIOS. + +**NOTE:** Please ensure your boot/grub parameters include +the following: + +.. code-block:: console + + iommu=pt intel_iommu=on + +To check that IOMMU is enabled on your platform: + +.. code-block:: console + + $ dmesg | grep IOMMU + [ 0.000000] Intel-IOMMU: enabled + [ 0.139882] dmar: IOMMU 0: reg_base_addr fbffe000 ver 1:0 cap d2078c106f0466 ecap f020de + [ 0.139888] dmar: IOMMU 1: reg_base_addr ebffc000 ver 1:0 cap d2078c106f0466 ecap f020de + [ 0.139893] IOAPIC id 2 under DRHD base 0xfbffe000 IOMMU 0 + [ 0.139894] IOAPIC id 0 under DRHD base 0xebffc000 IOMMU 1 + [ 0.139895] IOAPIC id 1 under DRHD base 0xebffc000 IOMMU 1 + [ 3.335744] IOMMU: dmar0 using Queued invalidation + [ 3.335746] IOMMU: dmar1 using Queued invalidation + .... + +.. _SRIOV-support: + +Using SRIOV support +^^^^^^^^^^^^^^^^^^^ + +To use virtual functions of NIC with SRIOV support, use extended form +of NIC PCI slot definition: + +.. code-block:: python + + WHITELIST_NICS = ['0000:05:00.0|vf0', '0000:05:00.1|vf3'] + +Where 'vf' is an indication of virtual function usage and following +number defines a VF to be used. In case that VF usage is detected, +then vswitchperf will enable SRIOV support for given card and it will +detect PCI slot numbers of selected VFs. + +So in example above, one VF will be configured for NIC '0000:05:00.0' +and four VFs will be configured for NIC '0000:05:00.1'. Vswitchperf +will detect PCI addresses of selected VFs and it will use them during +test execution. + +At the end of vswitchperf execution, SRIOV support will be disabled. + +SRIOV support is generic and it can be used in different testing scenarios. +For example: + +* vSwitch tests with DPDK or without DPDK support to verify impact + of VF usage on vSwitch performance +* tests without vSwitch, where traffic is forwared directly + between VF interfaces by packet forwarder (e.g. testpmd application) +* tests without vSwitch, where VM accesses VF interfaces directly + by PCI-passthrough_ to measure raw VM throughput performance. + +.. _PCI-passthrough: + +Using QEMU with PCI passthrough support +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Raw virtual machine throughput performance can be measured by execution of PVP +test with direct access to NICs by PCI passthrough. To execute VM with direct +access to PCI devices, enable vfio-pci_. In order to use virtual functions, +SRIOV-support_ must be enabled. + +Execution of test with PCI passthrough with vswitch disabled: + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf \ + --vswitch none --vnf QemuPciPassthrough pvp_tput + +Any of supported guest-loopback-application_ can be used inside VM with +PCI passthrough support. + +Note: Qemu with PCI passthrough support can be used only with PVP test +deployment. + +.. _guest-loopback-application: + +Selection of loopback application for tests with VMs +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +To select the loopback applications which will forward packets inside VMs, +the following parameter should be configured: + +.. code-block:: python + + GUEST_LOOPBACK = ['testpmd'] + +or use ``--test-params`` CLI argument: + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf \ + --test-params "GUEST_LOOPBACK=['testpmd']" + +Supported loopback applications are: + +.. code-block:: console + + 'testpmd' - testpmd from dpdk will be built and used + 'l2fwd' - l2fwd module provided by Huawei will be built and used + 'linux_bridge' - linux bridge will be configured + 'buildin' - nothing will be configured by vsperf; VM image must + ensure traffic forwarding between its interfaces + +Guest loopback application must be configured, otherwise traffic +will not be forwarded by VM and testcases with VM related deployments +will fail. Guest loopback application is set to 'testpmd' by default. + +**NOTE:** In case that only 1 or more than 2 NICs are configured for VM, +then 'testpmd' should be used. As it is able to forward traffic between +multiple VM NIC pairs. + +**NOTE:** In case of linux_bridge, all guest NICs are connected to the same +bridge inside the guest. + +Mergable Buffers Options with QEMU +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Mergable buffers can be disabled with VSPerf within QEMU. This option can +increase performance significantly when not using jumbo frame sized packets. +By default VSPerf disables mergable buffers. If you wish to enable it you +can modify the setting in the a custom conf file. + +.. code-block:: python + + GUEST_NIC_MERGE_BUFFERS_DISABLE = [False] + +Then execute using the custom conf file. + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf + +Alternatively you can just pass the param during execution. + +.. code-block:: console + + $ ./vsperf --test-params "GUEST_NIC_MERGE_BUFFERS_DISABLE=[False]" + + +Selection of dpdk binding driver for tests with VMs +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +To select dpdk binding driver, which will specify which driver the vm NICs will +use for dpdk bind, the following configuration parameter should be configured: + +.. code-block:: console + + GUEST_DPDK_BIND_DRIVER = ['igb_uio_from_src'] + +The supported dpdk guest bind drivers are: + +.. code-block:: console + + 'uio_pci_generic' - Use uio_pci_generic driver + 'igb_uio_from_src' - Build and use the igb_uio driver from the dpdk src + files + 'vfio_no_iommu' - Use vfio with no iommu option. This requires custom + guest images that support this option. The default + vloop image does not support this driver. + +Note: uio_pci_generic does not support sr-iov testcases with guests attached. +This is because uio_pci_generic only supports legacy interrupts. In case +uio_pci_generic is selected with the vnf as QemuPciPassthrough it will be +modified to use igb_uio_from_src instead. + +Note: vfio_no_iommu requires kernels equal to or greater than 4.5 and dpdk +16.04 or greater. Using this option will also taint the kernel. + +Please refer to the dpdk documents at http://dpdk.org/doc/guides for more +information on these drivers. + +Multi-Queue Configuration +^^^^^^^^^^^^^^^^^^^^^^^^^ + +VSPerf currently supports multi-queue with the following limitations: + +1. Requires QEMU 2.5 or greater and any OVS version higher than 2.5. The + default upstream package versions installed by VSPerf satisfies this + requirement. + +2. Guest image must have ethtool utility installed if using l2fwd or linux + bridge inside guest for loopback. + +3. If using OVS versions 2.5.0 or less enable old style multi-queue as shown + in the ''02_vswitch.conf'' file. + + .. code-block:: python + + OVS_OLD_STYLE_MQ = True + +To enable multi-queue for dpdk modify the ''02_vswitch.conf'' file. + +.. code-block:: python + + VSWITCH_DPDK_MULTI_QUEUES = 2 + +**NOTE:** you should consider using the switch affinity to set a pmd cpu mask +that can optimize your performance. Consider the numa of the NIC in use if this +applies by checking /sys/class/net/<eth_name>/device/numa_node and setting an +appropriate mask to create PMD threads on the same numa node. + +When multi-queue is enabled, each dpdk or dpdkvhostuser port that is created +on the switch will set the option for multiple queues. If old style multi queue +has been enabled a global option for multi queue will be used instead of the +port by port option. + +To enable multi-queue on the guest modify the ''04_vnf.conf'' file. + +.. code-block:: python + + GUEST_NIC_QUEUES = [2] + +Enabling multi-queue at the guest will add multiple queues to each NIC port when +qemu launches the guest. + +In case of Vanilla OVS, multi-queue is enabled on the tuntap ports and nic +queues will be enabled inside the guest with ethtool. Simply enabling the +multi-queue on the guest is sufficient for Vanilla OVS multi-queue. + +Testpmd should be configured to take advantage of multi-queue on the guest if +using DPDKVhostUser. This can be done by modifying the ''04_vnf.conf'' file. + +.. code-block:: python + + GUEST_TESTPMD_PARAMS = ['-l 0,1,2,3,4 -n 4 --socket-mem 512 -- ' + '--burst=64 -i --txqflags=0xf00 ' + '--nb-cores=4 --rxq=2 --txq=2 ' + '--disable-hw-vlan'] + +**NOTE:** The guest SMP cores must be configured to allow for testpmd to use the +optimal number of cores to take advantage of the multiple guest queues. + +In case of using Vanilla OVS and qemu virtio-net you can increase performance +by binding vhost-net threads to cpus. This can be done by enabling the affinity +in the ''04_vnf.conf'' file. This can be done to non multi-queue enabled +configurations as well as there will be 2 vhost-net threads. + +.. code-block:: python + + VSWITCH_VHOST_NET_AFFINITIZATION = True + + VSWITCH_VHOST_CPU_MAP = [4,5,8,11] + +**NOTE:** This method of binding would require a custom script in a real +environment. + +**NOTE:** For optimal performance guest SMPs and/or vhost-net threads should be +on the same numa as the NIC in use if possible/applicable. Testpmd should be +assigned at least (nb_cores +1) total cores with the cpu mask. + +Executing Packet Forwarding tests +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +To select the applications which will forward packets, +the following parameters should be configured: + +.. code-block:: python + + VSWITCH = 'none' + PKTFWD = 'TestPMD' + +or use ``--vswitch`` and ``--fwdapp`` CLI arguments: + +.. code-block:: console + + $ ./vsperf phy2phy_cont --conf-file user_settings.py \ + --vswitch none \ + --fwdapp TestPMD + +Supported Packet Forwarding applications are: + +.. code-block:: console + + 'testpmd' - testpmd from dpdk + + +1. Update your ''10_custom.conf'' file to use the appropriate variables + for selected Packet Forwarder: + + .. code-block:: python + + # testpmd configuration + TESTPMD_ARGS = [] + # packet forwarding mode supported by testpmd; Please see DPDK documentation + # for comprehensive list of modes supported by your version. + # e.g. io|mac|mac_retry|macswap|flowgen|rxonly|txonly|csum|icmpecho|... + # Note: Option "mac_retry" has been changed to "mac retry" since DPDK v16.07 + TESTPMD_FWD_MODE = 'csum' + # checksum calculation layer: ip|udp|tcp|sctp|outer-ip + TESTPMD_CSUM_LAYER = 'ip' + # checksum calculation place: hw (hardware) | sw (software) + TESTPMD_CSUM_CALC = 'sw' + # recognize tunnel headers: on|off + TESTPMD_CSUM_PARSE_TUNNEL = 'off' + +2. Run test: + + .. code-block:: console + + $ ./vsperf phy2phy_tput --conf-file <path_to_settings_py> + +Executing Packet Forwarding tests with one guest +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +TestPMD with DPDK 16.11 or greater can be used to forward packets as a switch to a single guest using TestPMD vdev +option. To set this configuration the following parameters should be used. + + .. code-block:: python + + VSWITCH = 'none' + PKTFWD = 'TestPMD' + +or use ``--vswitch`` and ``--fwdapp`` CLI arguments: + + .. code-block:: console + + $ ./vsperf pvp_tput --conf-file user_settings.py \ + --vswitch none \ + --fwdapp TestPMD + +Guest forwarding application only supports TestPMD in this configuration. + + .. code-block:: python + + GUEST_LOOPBACK = ['testpmd'] + +For optimal performance one cpu per port +1 should be used for TestPMD. Also set additional params for packet forwarding +application to use the correct number of nb-cores. + + .. code-block:: python + + DPDK_SOCKET_MEM = ['1024', '0'] + VSWITCHD_DPDK_ARGS = ['-l', '46,44,42,40,38', '-n', '4'] + TESTPMD_ARGS = ['--nb-cores=4', '--txq=1', '--rxq=1'] + +For guest TestPMD 3 VCpus should be assigned with the following TestPMD params. + + .. code-block:: python + + GUEST_TESTPMD_PARAMS = ['-l 0,1,2 -n 4 --socket-mem 1024 -- ' + '--burst=64 -i --txqflags=0xf00 ' + '--disable-hw-vlan --nb-cores=2 --txq=1 --rxq=1'] + +Execution of TestPMD can be run with the following command line + + .. code-block:: console + + ./vsperf pvp_tput --vswitch=none --fwdapp=TestPMD --conf-file <path_to_settings_py> + +**NOTE:** To achieve the best 0% loss numbers with rfc2544 throughput testing, other tunings should be applied to host +and guest such as tuned profiles and CPU tunings to prevent possible interrupts to worker threads. + +VSPERF modes of operation +^^^^^^^^^^^^^^^^^^^^^^^^^ + +VSPERF can be run in different modes. By default it will configure vSwitch, +traffic generator and VNF. However it can be used just for configuration +and execution of traffic generator. Another option is execution of all +components except traffic generator itself. + +Mode of operation is driven by configuration parameter -m or --mode + +.. code-block:: console + + -m MODE, --mode MODE vsperf mode of operation; + Values: + "normal" - execute vSwitch, VNF and traffic generator + "trafficgen" - execute only traffic generator + "trafficgen-off" - execute vSwitch and VNF + "trafficgen-pause" - execute vSwitch and VNF but wait before traffic transmission + +In case, that VSPERF is executed in "trafficgen" mode, then configuration +of traffic generator can be modified through ``TRAFFIC`` dictionary passed to the +``--test-params`` option. It is not needed to specify all values of ``TRAFFIC`` +dictionary. It is sufficient to specify only values, which should be changed. +Detailed description of ``TRAFFIC`` dictionary can be found at +:ref:`configuration-of-traffic-dictionary`. + +Example of execution of VSPERF in "trafficgen" mode: + +.. code-block:: console + + $ ./vsperf -m trafficgen --trafficgen IxNet --conf-file vsperf.conf \ + --test-params "TRAFFIC={'traffic_type':'rfc2544_continuous','bidir':'False','framerate':60}" + +Code change verification by pylint +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Every developer participating in VSPERF project should run +pylint before his python code is submitted for review. Project +specific configuration for pylint is available at 'pylint.rc'. + +Example of manual pylint invocation: + +.. code-block:: console + + $ pylint --rcfile ./pylintrc ./vsperf + +GOTCHAs: +^^^^^^^^ + +Custom image fails to boot +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Using custom VM images may not boot within VSPerf pxp testing because of +the drive boot and shared type which could be caused by a missing scsi +driver inside the image. In case of issues you can try changing the drive +boot type to ide. + +.. code-block:: python + + GUEST_BOOT_DRIVE_TYPE = ['ide'] + GUEST_SHARED_DRIVE_TYPE = ['ide'] + +OVS with DPDK and QEMU +~~~~~~~~~~~~~~~~~~~~~~~ + +If you encounter the following error: "before (last 100 chars): +'-path=/dev/hugepages,share=on: unable to map backing store for +hugepages: Cannot allocate memory\r\n\r\n" during qemu initialization, +check the amount of hugepages on your system: + +.. code-block:: console + + $ cat /proc/meminfo | grep HugePages + + +By default the vswitchd is launched with 1Gb of memory, to change +this, modify --socket-mem parameter in conf/02_vswitch.conf to allocate +an appropriate amount of memory: + +.. code-block:: python + + DPDK_SOCKET_MEM = ['1024', '0'] + VSWITCHD_DPDK_ARGS = ['-c', '0x4', '-n', '4'] + VSWITCHD_DPDK_CONFIG = { + 'dpdk-init' : 'true', + 'dpdk-lcore-mask' : '0x4', + 'dpdk-socket-mem' : '1024,0', + } + +Note: Option ``VSWITCHD_DPDK_ARGS`` is used for vswitchd, which supports ``--dpdk`` +parameter. In recent vswitchd versions, option ``VSWITCHD_DPDK_CONFIG`` will be +used to configure vswitchd via ``ovs-vsctl`` calls. + + +More information +^^^^^^^^^^^^^^^^ + +For more information and details refer to the rest of vSwitchPerfuser documentation. + diff --git a/docs/testing/user/userguide/yardstick.rst b/docs/testing/user/userguide/yardstick.rst new file mode 100644 index 00000000..b5e5c72d --- /dev/null +++ b/docs/testing/user/userguide/yardstick.rst @@ -0,0 +1,250 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Intel Corporation, AT&T and others. + +Execution of vswitchperf testcases by Yardstick +----------------------------------------------- + +General +^^^^^^^ + +Yardstick is a generic framework for a test execution, which is used for +validation of installation of OPNFV platform. In the future, Yardstick will +support two options of vswitchperf testcase execution: + +- plugin mode, which will execute native vswitchperf testcases; Tests will + be executed natively by vsperf, and test results will be processed and + reported by yardstick. +- traffic generator mode, which will run vswitchperf in **trafficgen** + mode only; Yardstick framework will be used to launch VNFs and to configure + flows to ensure, that traffic is properly routed. This mode will allow to + test OVS performance in real world scenarios. + +In Colorado release only the traffic generator mode is supported. + +Yardstick Installation +^^^^^^^^^^^^^^^^^^^^^^ + +In order to run Yardstick testcases, you will need to prepare your test +environment. Please follow the `installation instructions +<http://artifacts.opnfv.org/yardstick/docs/user_guides_framework/index.html>`__ +to install the yardstick. + +Please note, that yardstick uses OpenStack for execution of testcases. +OpenStack must be installed with Heat and Neutron services. Otherwise +vswitchperf testcases cannot be executed. + +VM image with vswitchperf +^^^^^^^^^^^^^^^^^^^^^^^^^ + +A special VM image is required for execution of vswitchperf specific testcases +by yardstick. It is possible to use a sample VM image available at OPNFV +artifactory or to build customized image. + +Sample VM image with vswitchperf +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Sample VM image is available at vswitchperf section of OPNFV artifactory +for free download: + +.. code-block:: console + + $ wget http://artifacts.opnfv.org/vswitchperf/vnf/vsperf-yardstick-image.qcow2 + +This image can be used for execution of sample testcases with dummy traffic +generator. + +**NOTE:** Traffic generators might require an installation of client software. +This software is not included in the sample image and must be installed by user. + +**NOTE:** This image will be updated only in case, that new features related +to yardstick integration will be added to the vswitchperf. + +Preparation of custom VM image +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +In general, any Linux distribution supported by vswitchperf can be used as +a base image for vswitchperf. One of the possibilities is to modify vloop-vnf +image, which can be downloaded from `<http://artifacts.opnfv.org/vswitchperf.html/>`__ +(see :ref:`vloop-vnf`). + +Please follow the :ref:`vsperf-installation` to +install vswitchperf inside vloop-vnf image. As vswitchperf will be run in +trafficgen mode, it is possible to skip installation and compilation of OVS, +QEMU and DPDK to keep image size smaller. + +In case, that selected traffic generator requires installation of additional +client software, please follow appropriate documentation. For example in case +of IXIA, you would need to install IxOS and IxNetowrk TCL API. + +VM image usage +~~~~~~~~~~~~~~ + +Image with vswitchperf must be uploaded into the glance service and +vswitchperf specific flavor configured, e.g.: + +.. code-block:: console + + $ glance --os-username admin --os-image-api-version 1 image-create --name \ + vsperf --is-public true --disk-format qcow2 --container-format bare --file \ + vsperf-yardstick-image.qcow2 + + $ nova --os-username admin flavor-create vsperf-flavor 100 2048 25 1 + +Testcase execution +^^^^^^^^^^^^^^^^^^ + +After installation, yardstick is available as python package within yardstick +specific virtual environment. It means, that yardstick environment must be +enabled before the test execution, e.g.: + +.. code-block:: console + + source ~/yardstick_venv/bin/activate + + +Next step is configuration of OpenStack environment, e.g. in case of devstack: + +.. code-block:: console + + source /opt/openstack/devstack/openrc + export EXTERNAL_NETWORK=public + +Vswitchperf testcases executable by yardstick are located at vswitchperf +repository inside ``yardstick/tests`` directory. Example of their download +and execution follows: + +.. code-block:: console + + git clone https://gerrit.opnfv.org/gerrit/vswitchperf + cd vswitchperf + + yardstick -d task start yardstick/tests/rfc2544_throughput_dummy.yaml + +**NOTE:** Optional argument ``-d`` shows debug output. + +Testcase customization +^^^^^^^^^^^^^^^^^^^^^^ + +Yardstick testcases are described by YAML files. vswitchperf specific testcases +are part of the vswitchperf repository and their yaml files can be found at +``yardstick/tests`` directory. For detailed description of yaml file structure, +please see yardstick documentation and testcase samples. Only vswitchperf specific +parts will be discussed here. + +Example of yaml file: + +.. code-block:: yaml + + ... + scenarios: + - + type: Vsperf + options: + testname: 'p2p_rfc2544_throughput' + trafficgen_port1: 'eth1' + trafficgen_port2: 'eth3' + external_bridge: 'br-ex' + test_params: 'TRAFFICGEN_DURATION=30;TRAFFIC={'traffic_type':'rfc2544_throughput}' + conf_file: '~/vsperf-yardstick.conf' + + host: vsperf.demo + + runner: + type: Sequence + scenario_option_name: frame_size + sequence: + - 64 + - 128 + - 512 + - 1024 + - 1518 + sla: + metrics: 'throughput_rx_fps' + throughput_rx_fps: 500000 + action: monitor + + context: + ... + +Section option +~~~~~~~~~~~~~~ + +Section **option** defines details of vswitchperf test scenario. Lot of options +are identical to the vswitchperf parameters passed through ``--test-params`` +argument. Following options are supported: + +- **frame_size** - a packet size for which test should be executed; + Multiple packet sizes can be tested by modification of Sequence runner + section inside YAML definition. Default: '64' +- **conf_file** - sets path to the vswitchperf configuration file, which will be + uploaded to VM; Default: '~/vsperf-yardstick.conf' +- **setup_script** - sets path to the setup script, which will be executed + during setup and teardown phases +- **trafficgen_port1** - specifies device name of 1st interface connected to + the trafficgen +- **trafficgen_port2** - specifies device name of 2nd interface connected to + the trafficgen +- **external_bridge** - specifies name of external bridge configured in OVS; + Default: 'br-ex' +- **test_params** - specifies a string with a list of vsperf configuration + parameters, which will be passed to the ``--test-params`` CLI argument; + Parameters should be stated in the form of ``param=value`` and separated + by a semicolon. Configuration of traffic generator is driven by ``TRAFFIC`` + dictionary, which can be also updated by values defined by ``test_params``. + Please check VSPERF documentation for details about available configuration + parameters and their data types. + In case that both **test_params** and **conf_file** are specified, + then values from **test_params** will override values defined + in the configuration file. + +In case that **trafficgen_port1** and/or **trafficgen_port2** are defined, then +these interfaces will be inserted into the **external_bridge** of OVS. It is +expected, that OVS runs at the same node, where the testcase is executed. In case +of more complex OpenStack installation or a need of additional OVS configuration, +**setup_script** can be used. + +**NOTE** It is essential to specify a configuration for selected traffic generator. +In case, that standalone testcase is created, then traffic generator can be +selected and configured directly in YAML file by **test_params**. On the other +hand, if multiple testcases should be executed with the same traffic generator +settings, then a customized configuration file should be prepared and its name +passed by **conf_file** option. + +Section runner +~~~~~~~~~~~~~~ + +Yardstick supports several `runner types +<http://artifacts.opnfv.org/yardstick/docs/userguide/architecture.html#runner-types>`__. +In case of vswitchperf specific TCs, **Sequence** runner type can be used to +execute the testcase for given list of frame sizes. + + +Section sla +~~~~~~~~~~~ + +In case that sla section is not defined, then testcase will be always +considered as successful. On the other hand, it is possible to define a set of +test metrics and their minimal values to evaluate test success. Any numeric +value, reported by vswitchperf inside CSV result file, can be used. +Multiple metrics can be defined as a coma separated list of items. Minimal +value must be set separately for each metric. + +e.g.: + +.. code-block:: yaml + + sla: + metrics: 'throughput_rx_fps,throughput_rx_mbps' + throughput_rx_fps: 500000 + throughput_rx_mbps: 1000 + +In case that any of defined metrics will be lower than defined value, then +testcase will be marked as failed. Based on ``action`` policy, yardstick +will either stop test execution (value ``assert``) or it will run next test +(value ``monitor``). + +**NOTE** The throughput SLA (or any other SLA) cannot be set to a meaningful +value without knowledge of the server and networking environment, possibly +including prior testing in that environment to establish a baseline SLA level +under well-understood circumstances. |
