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: [vr256]
- default 256 descriptors, [vr1024] 1024 descriptors to optimize for
- packet throughput.
+- 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 [vr256,vr1024] and
+- 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