Comparing New CPU Schedulers

“2.4 kernel maintainer Willy Tarreau ran some tests to compare
Con Kolivas’s Staircase Deadline CPU scheduler with Ingo Molnar’s
new Completely Fair Scheduler. He summarized his experiences:

“‘I think that CFS is based on a more promising concept but is
less mature and is dangerous right now with certain workloads. SD
shows some strange behaviours like not using all CPU available and
a little jerkyness, but is more robust and may be the less risky
solution for a first step towards a better scheduler in mainline,
but it may also probably be the last O(1) scheduler, which may be
replaced sometime later when CFS (or any other one) shows at the
same time the smoothness of CFS and the robustness of SD…'”

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