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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, Spirent, AT&T and others.
.. _additional-tools-configuration:
=============================================
'vsperf' Additional Tools Configuration Guide
=============================================
Overview
--------
VSPERF supports the following categories additional tools:
* `Infrastructure Metrics Collectors`_
* `Load Generators`_
* `L3 Cache Management`_
Under each category, there are one or more tools supported by VSPERF.
This guide provides the details of how to install (if required)
and configure the above mentioned tools.
.. _`Infrastructure Metrics Collectors`:
Infrastructure Metrics Collection
---------------------------------
VSPERF supports following two tools for collecting and reporting the metrics:
* pidstat
* collectd
*pidstat* is a command in linux systems, which is used for monitoring individual
tasks currently being managed by Linux kernel. In VSPERF this command is used to
monitor *ovs-vswitchd*, *ovsdb-server* and *kvm* processes.
*collectd* is linux application that collects, stores and transfers various system
metrics. For every category of metrics, there is a separate plugin in collectd. For
example, CPU plugin and Interface plugin provides all the cpu metrics and interface
metrics, respectively. CPU metrics may include user-time, system-time, etc., whereas
interface metrics may include received-packets, dropped-packets, etc.
Installation
^^^^^^^^^^^^
No installation is required for *pidstat*, whereas, collectd has to be installed
separately. For installation of collectd, we recommend to follow the process described
in *OPNFV-Barometer* project, which can be found here `Barometer-Euphrates <http://docs.opnfv.org/en/stable-euphrates/submodules/barometer/docs/release/userguide/feature.userguide.html#building-all-barometer-upstreamed-plugins-from-scratch>`_ or the most
recent release.
VSPERF assumes that collectd is installed and configured to send metrics over localhost.
The metrics sent should be for the following categories: CPU, Processes, Interface,
OVS, DPDK, Intel-RDT.
For multicmd, apart from collectd, installation of PROX is also necessary.
Installation steps for PROX can be found here - `DPPD-PROX <https://github.com/opnfv/samplevnf/tree/master/VNFs/DPPD-PROX>`_
Configuration
^^^^^^^^^^^^^
The configuration file for the collectors can be found in **conf/05_collector.conf**.
*pidstat* specific configuration includes:
* ``PIDSTAT_MONITOR`` - processes to be monitored by pidstat
* ``PIDSTAT_OPTIONS`` - options which will be passed to pidstat command
* ``PIDSTAT_SAMPLE_INTERVAL`` - sampling interval used by pidstat to collect statistics
* ``LOG_FILE_PIDSTAT`` - prefix of pidstat's log file
The *collectd* configuration option includes:
* ``COLLECTD_IP`` - IP address where collectd is running
* ``COLLECTD_PORT`` - Port number over which collectd is sending the metrics
* ``COLLECTD_SECURITY_LEVEL`` - Security level for receiving metrics
* ``COLLECTD_AUTH_FILE`` - Authentication file for receiving metrics
* ``LOG_FILE_COLLECTD`` - Prefix for collectd's log file.
* ``COLLECTD_CPU_KEYS`` - Interesting metrics from CPU
* ``COLLECTD_PROCESSES_KEYS`` - Interesting metrics from processes
* ``COLLECTD_INTERFACE_KEYS`` - Interesting metrics from interface
* ``COLLECTD_OVSSTAT_KEYS`` - Interesting metrics from OVS
* ``COLLECTD_DPDKSTAT_KEYS`` - Interesting metrics from DPDK.
* ``COLLECTD_INTELRDT_KEYS`` - Interesting metrics from Intel-RDT
* ``COLLECTD_INTERFACE_XKEYS`` - Metrics to exclude from Interface
* ``COLLECTD_INTELRDT_XKEYS`` - Metrics to exclude from Intel-RDT
* ``MC_COLLECTD_CSV`` - Path where collectd writes its metrics as CSV.
* ``MC_COLLECTD_CMD`` - Path where Collectd is installed
* ``MC_PROX_HOME`` - Path where PROX-IRQ is installed.
* ``MC_PROX_CMD`` - Command to run PROX-IRQ
* ``MC_PROX_OUT`` - Output file generated by PROX-IRQ stats collector.
* ``MC_CRON_OUT`` - Output file path of the command run through CROND
* ``MC_BEAT_CFILE`` - Filebeat configuration file path.
.. _`Load Generators`:
Load Generation
---------------
In VSPERF, load generation refers to creating background cpu and memory loads to
study the impact of these loads on system under test. There are two options to
create loads in VSPERF. These options are used for different use-cases. The options are:
* stress or stress-ng
* Stressor-VMs
*stress and stress-ng* are linux tools to stress the system in various ways.
It can stress different subsystems such as CPU and memory. *stress-ng* is the
improvised version of *stress*. StressorVMs are custom build virtual-machines
for the noisy-neighbor use-cases.
Installation
^^^^^^^^^^^^
stress and stress-ng can be installed through standard linux installation process.
Information about stress-ng, including the steps for installing can be found
here: `stress-ng <https://github.com/ColinIanKing/stress-ng>`_
There are two options for StressorVMs - one is VMs based on stress-ng and second
is VM based on Spirent's cloudstress. VMs based on stress-ng can be found in this
`link <https://github.com/opensource-tnbt/stressng-images>`_ . Spirent's cloudstress
based VM can be downloaded from this `site <https://github.com/spirent/cloudstress>`_
These stressorVMs are of OSV based VMs, which are very small in size. Download
these VMs and place it in appropriate location, and this location will used in
the configuration - as mentioned below.
Configuration
^^^^^^^^^^^^^
The configuration file for loadgens can be found in **conf/07_loadgen.conf**.
There are no specific configurations for stress and stress-ng commands based
load-generation. However, for StressorVMs, following configurations apply:
* ``NN_COUNT`` - Number of stressor VMs required.
* ``NN_MEMORY`` - Comma separated memory configuration for each VM
* ``NN_SMP`` - Comma separated configuration for each VM
* ``NN_IMAGE`` - Comma separated list of Paths for each VM image
* ``NN_SHARED_DRIVE_TYPE`` - Comma separated list of shaed drive type for each VM
* ``NN_BOOT_DRIVE_TYPE`` - Comma separated list of boot drive type for each VM
* ``NN_CORE_BINDING`` - Comma separated lists of list specifying the cores associated with each VM.
* ``NN_NICS_NR`` - Comma seprated list of number of NICS for each VM
* ``NN_BASE_VNC_PORT`` - Base VNC port Index.
* ``NN_LOG_FILE`` - Name of the log file
.. _`L3 Cache Management`:
Last Level Cache Management
---------------------------
VSPERF support last-level cache management using Intel's RDT tool(s) - the
relavant ones are `Intel CAT-CMT <https://github.com/intel/intel-cmt-cat>`_ and
`Intel RMD <https://github.com/intel/rmd>`_. RMD is a linux daemon that runs on
individual hosts, and provides a REST API for control/orchestration layer to
request LLC for the VMs/Containers/Applications. RDT receives resource policy
form orchestration layer - in this case, from VSPERF - and enforce it on the host.
It achieves this enforcement via kernel interfaces such as resctrlfs and libpqos.
The resource here refer to the last-level cache. User can configure policies to
define how much of cache a CPU can get. The policy configuration is described below.
Installation
^^^^^^^^^^^^
For installation of RMD tool, please install CAT-CMT first and then install RMD.
The details of installation can be found here: `Intel CAT-CMT <https://github.com/intel/intel-cmt-cat>`_
and `Intel RMD <https://github.com/intel/rmd>`_
Configuration
^^^^^^^^^^^^^
The configuration file for cache management can be found in **conf/08_llcmanagement.conf**.
VSPERF provides following configuration options, for user to define and enforce policies via RMD.
* ``LLC_ALLOCATION`` - Enable or Disable LLC management.
* ``RMD_PORT`` - RMD port (port number on which API server is listening)
* ``RMD_SERVER_IP`` - IP address where RMD is running. Currently only localhost.
* ``RMD_API_VERSION`` - RMD version. Currently it is 'v1'
* ``POLICY_TYPE`` - Specify how the policy is defined - either COS or CUSTOM
* ``VSWITCH_COS`` - Class of service (CoS for Vswitch. CoS can be gold, silver-bf or bronze-shared.
* ``VNF_COS`` - Class of service for VNF
* ``PMD_COS`` - Class of service for PMD
* ``NOISEVM_COS`` - Class of service of Noisy VM.
* ``VSWITCH_CA`` - [min-cache-value, maxi-cache-value] for vswitch
* ``VNF_CA`` - [min-cache-value, max-cache-value] for VNF
* ``PMD_CA`` - [min-cache-value, max-cache-value] for PMD
* ``NOISEVM_CA`` - [min-cache-value, max-cache-value] for Noisy VM
|
