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Comparing New CPU Schedulers

Apr 23, 2007, 18:30 (1 Talkback[s])

"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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