+++ /dev/null
-KVM VMs vhost-user
-------------------
-
-QEMU is used for VPP-VM testing enviroment. By default, standard QEMU version
-preinstalled from OS repositories is used on VIRL/vpp_device functional testing
-(qemu-2.11.x for Ubuntu 18.04, qemu-2.5.0 for Ubuntu 16.04). For perfomance
-testing QEMU is downloaded from `project homepage <qemu.org>`_ and compiled
-during testing. This allows framework to easily inject QEMU patches in case of
-need. In QEMU version <2.8 we used it for increasing QEMU virtion queue size.
-In CSIT setup DUTs have small VM image `/var/lib/vm/vhost-nested.img`. QEMU
-binary can be adjusted in global settings. VM image must have installed at least
-qemu-guest-agent, sshd, bridge-utils, VirtIO support and Testpmd/L3fwd
-application. Username/password for the VM must be cisco/cisco and
-NOPASSWD sudo access. The interface naming is based on driver (management
-interface type is Intel E1000), all E1000 interfaces will be named mgmt<n> and
-all VirtIO interfaces will be named virtio<n>. In VM
-"/etc/init.d/qemu-guest-agent" you must set "TRANSPORT=isa-serial:/dev/ttyS1"
-because ttyS0 is used by serial console and ttyS1 is dedicated for
-qemu-guest-agent in QEMU setup. There is python library for QEMU setup, start
-and some utilities "resources/libraries/python/QemuUtils.py"
-
-FD.io CSIT performance lab is testing VPP vhost with KVM VMs using
-following environment settings:
-
-- Tests with varying Qemu virtio queue (a.k.a. vring) sizes: [vr1024] 1024
- descriptors to optimize for packet throughput.
-- Tests with varying Linux :abbr:`CFS (Completely Fair Scheduler)`
- settings: [cfs] default settings, [cfsrr1] CFS RoundRobin(1) policy
- applied to all data plane threads handling test packet path including
- all VPP worker threads and all Qemu testpmd poll-mode threads.
-- Resulting test cases are all combinations with [vr1024] and
- [cfs,cfsrr1] settings.
-- Adjusted Linux kernel :abbr:`CFS (Completely Fair Scheduler)`
- scheduler policy for data plane threads used in CSIT is documented in
- `CSIT Performance Environment Tuning wiki
- <https://wiki.fd.io/view/CSIT/csit-perf-env-tuning-ubuntu1604>`_.
-- The purpose is to verify performance impact (MRR and NDR/PDR
- throughput) and same test measurements repeatability, by making VPP
- and VM data plane threads less susceptible to other Linux OS system
- tasks hijacking CPU cores running those data plane threads.
Code Review / csit.git / blobdiff