Re: [.32-rc3] scheduler: iwlagn consistently high in "waiting for CPU"

[Frans Pop]

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/