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SubjectRe: [PATCH v3 07/12] sched: test the cpu's capacity in wake affine
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On 06/30/2014 12:05 PM, Vincent Guittot wrote:
> Currently the task always wakes affine on this_cpu if the latter is
> idle. Before waking up the task on this_cpu, we check that this_cpu
> capacity is not significantly reduced because of RT tasks or irq
> activity.
>
> Use case where the number of irq and/or the time spent under irq is
> important will take benefit of this because the task that is woken
> up by irq or softirq will not use the same CPU than irq (and
> softirq) but a idle one which share its cache.
>
> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>

Acked-by: Rik van Riel <riel@redhat.com>


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