-- 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: