Re: [patch] CFS (Completely Fair Scheduler), v2
- From: Peter Williams <pwil3058@xxxxxxxxxxxxxx>
- Date: Tue, 17 Apr 2007 16:46:57 +1000
Ingo Molnar wrote:
this is the second release of the CFS (Completely Fair Scheduler) patchset, against v2.6.21-rc7:
http://redhat.com/~mingo/cfs-scheduler/sched-cfs-v2.patch
i'd like to thank everyone for the tremendous amount of feedback and testing the v1 patch got - i could hardly keep up with just reading the mails! Some of the stuff people addressed i couldnt implement yet, i mostly concentrated on bugs, regressions and debuggability.
Have you considered using rq->raw_weighted_load instead of rq->nr_running in calculating fair_clock? This would take the nice value (or RT priority) of the other tasks into account when determining what's fair.
Peter
PS You'd have to change the migration thread's load_weight from 0 to 1 in order to prevent divide by zero without having to explicitly check for it every time.
--
Peter Williams pwil3058@xxxxxxxxxxxxxx
"Learning, n. The kind of ignorance distinguishing the studious."
-- Ambrose Bierce
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