+++ /dev/null
-KVM VMs vhost-user
-------------------
-
-QEMU is used for KVM VM vhost-user testing enviroment. By default,
-standard QEMU version is used, preinstalled from OS repositories
-(qemu-2.11.1 for Ubuntu 18.04, qemu-2.5.0 for Ubuntu 16.04). The path
-to the QEMU binary can be adjusted in `Constants.py`.
-
-FD.io CSIT performance lab is testing VPP vhost-user 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: i) [cfs] default settings, ii) [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>`_.
-
-Testing with different CFS settings enables verifying the impact of
-making VPP and VM data plane threads less susceptible to other Linux OS
-system tasks hijacking CPU cores running those data plane threads.
-
-CSIT supports two types of VMs:
-
-- **Image-VM**: used for all functional, VPP_device, and regular
- performance tests except NFV density tests.
-
-- **Kernel-VM**: new VM type introduced for NFV density tests to provide
- greater in-VM application install flexibility and to further reduce
- test execution time by simpler VM lifecycle management.
-
-Image-VM
-~~~~~~~~
-
-CSIT can use a pre-created VM image. The path to the image can be
-adjusted in `Constants.py`. For convenience and full compatibility CSIT
-repository contains a set of scripts to prepare `Built-root
-<https://buildroot.org/>`_ based embedded Linux image with all the
-dependencies needed to run DPDK Testpmd, DPDK L3Fwd, Linux bridge or
-Linux IPv4 forwarding.
-
-Built-root was chosen for a VM image to make it lightweight and with
-fast booting time to limit impact on tests duration.
-
-In order to execute CSIT tests, VM image must have following software
-installed: qemu-guest-agent, sshd, bridge-utils, VirtIO support and DPDK
-Testpmd/L3fwd applications. Username/password for the VM must be
-``cisco``/``cisco`` and ``NOPASSWD`` sudo access. The interface naming
-is based on the 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`` must
-be set to ``TRANSPORT=isa-serial:/dev/ttyS1`` because ttyS0 is used by
-serial console and ttyS1 is dedicated for qemu-guest-agent in QEMU
-setup.
-
-Kernel-VM
-~~~~~~~~~
-
-CSIT can use a kernel KVM image as a boot kernel, as an alternative to
-image VM. This option allows better configurability of what application
-is running in VM userspace. Using root9p filesystem allows mapping the
-host-OS filesystem as read only guest-OS filesystem.
-
-Example of custom init script for the kernel-VM:
-
-::
-
- #!/bin/bash
- mount -t sysfs -o "nodev,noexec,nosuid" sysfs /sys
- mount -t proc -o "nodev,noexec,nosuid" proc /proc
- mkdir /dev/pts
- mkdir /dev/hugepages
- mount -t devpts -o "rw,noexec,nosuid,gid=5,mode=0620" devpts /dev/pts || true
- mount -t tmpfs -o "rw,noexec,nosuid,size=10%,mode=0755" tmpfs /run
- mount -t tmpfs -o "rw,noexec,nosuid,size=10%,mode=0755" tmpfs /tmp
- mount -t hugetlbfs -o "rw,relatime,pagesize=2M" hugetlbfs /dev/hugepages
- echo 0000:00:06.0 > /sys/bus/pci/devices/0000:00:06.0/driver/unbind
- echo 0000:00:07.0 > /sys/bus/pci/devices/0000:00:07.0/driver/unbind
- echo uio_pci_generic > /sys/bus/pci/devices/0000:00:06.0/driver_override
- echo uio_pci_generic > /sys/bus/pci/devices/0000:00:07.0/driver_override
- echo 0000:00:06.0 > /sys/bus/pci/drivers/uio_pci_generic/bind
- echo 0000:00:07.0 > /sys/bus/pci/drivers/uio_pci_generic/bind
- $vnf_bin
- poweroff -f
-
-QemuUtils library during runtime replaces the ``$vnf_bin`` variable by
-the path to NF binary and its parameters. This allows CSIT to run any
-application installed on host OS, for example the same version of VPP
-as running on the host-OS.
-
-Kernel-VM image must be available in the host filesystem as a
-prerequisite. The path to kernel-VM image is defined in `Constants.py`.
Code Review / csit.git / blobdiff