| Date | Wed, 10 Sep 2014 16:19:05 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v5 07/12] sched: test the cpu's capacity in wake affine |
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On Tue, Aug 26, 2014 at 01:06:50PM +0200, 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. > > Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Rik, you've been 'fighting' wake_affine, any objections?
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