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SubjectRe: [.32-rc3] scheduler: iwlagn consistently high in "waiting for CPU"
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On Friday 09 October 2009, Mike Galbraith wrote:
> sched: update the clock of runqueue select_task_rq() selected.
>
> In try_to_wake_up(), we update the runqueue clock, but select_task_rq()
> may select a different runqueue than the one we updated, leaving the new
> runqueue's clock stale for a bit.
>
> This patch cures occasional huge latencies reported by latencytop when
> coming out of idle on a mostly idle NO_HZ box.

This patch (without Arjan's previous one applied) also fixes my latency
issues. Nice work!

Cheers,
FJP


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