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diff --git a/docs/userguide/testusage.rst b/docs/userguide/testusage.rst deleted file mode 100644 index 0055164e..00000000 --- a/docs/userguide/testusage.rst +++ /dev/null @@ -1,809 +0,0 @@ -.. 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 - -.. _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 - - VSWITCHD_DPDK_ARGS = ['-l', '46,44,42,40,38', '-n', '4', '--socket-mem 1024,0'] - 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 - - VSWITCHD_DPDK_ARGS = ['-c', '0x4', '-n', '4', '--socket-mem 1024,0'] - 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. - |