[PATCH v5 07/12] sched: test the cpu's capacity in wake affine

[PATCH v5 00/12] sched: consolidation of cpu_capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
[PATCH v5 01/12] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
[PATCH v5 03/12] sched: fix avg_load computation · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 03/12] sched: fix avg_load computation · Preeti U Murthy <hidden> · 2014-08-30
Re: [PATCH v5 03/12] sched: fix avg_load computation · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-03
Re: [PATCH v5 03/12] sched: fix avg_load computation · Tim Chen <hidden> · 2014-09-03
Re: [PATCH v5 03/12] sched: fix avg_load computation · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-04
Re: [PATCH v5 03/12] sched: fix avg_load computation · Tim Chen <hidden> · 2014-09-04
Re: [PATCH v5 03/12] sched: fix avg_load computation · Preeti U Murthy <hidden> · 2014-09-05
[PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Kamalesh Babulal <hidden> · 2014-08-27
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Preeti U Murthy <hidden> · 2014-08-30
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-01
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Preeti U Murthy <hidden> · 2014-09-03
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Peter Zijlstra <peterz@infradead.org> · 2014-09-10
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-10
Re: [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig · Preeti U Murthy <hidden> · 2014-09-11
[PATCH v5 07/12] sched: test the cpu's capacity in wake affine · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 07/12] sched: test the cpu's capacity in wake affine · Peter Zijlstra <peterz@infradead.org> · 2014-09-10
[PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Preeti U Murthy <hidden> · 2014-08-30
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-01
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Preeti U Murthy <hidden> · 2014-09-03
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-03
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Preeti U Murthy <hidden> · 2014-09-03
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-03
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Preeti U Murthy <hidden> · 2014-09-05
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-05
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-11
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-11
Re: [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
[PATCH v5 12/12] sched: add SD_PREFER_SIBLING for SMT level · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
[PATCH v5 11/12] sched: replace capacity_factor by utilization · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-11
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-14
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-14
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-15
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Nicolas Pitre <hidden> · 2014-09-15
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-16
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Morten Rasmussen <hidden> · 2014-09-17
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Morten Rasmussen <hidden> · 2014-09-17
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-17
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-15
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-15
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Peter Zijlstra <peterz@infradead.org> · 2014-09-17
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-18
Re: [PATCH v5 11/12] sched: replace capacity_factor by utilization · Dietmar Eggemann <dietmar.eggemann@arm.com> · 2014-09-16
[PATCH v5 10/12] sched: get CPU's utilization statistic · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-11
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Nicolas Pitre <hidden> · 2014-09-11
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-12
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Morten Rasmussen <hidden> · 2014-09-15
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-16
Re: [PATCH v5 10/12] sched: get CPU's utilization statistic · Morten Rasmussen <hidden> · 2014-09-15
[PATCH v5 09/12] sched: add usage_load_avg · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 09/11] sched: add usage_load_avg · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-04
Re: [PATCH v5 09/11] sched: add usage_load_avg · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 09/12] sched: add usage_load_avg · Peter Zijlstra <peterz@infradead.org> · 2014-09-11
Re: [PATCH v5 09/12] sched: add usage_load_avg · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-11
Re: [PATCH v5 09/12] sched: add usage_load_avg · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-11
Re: [PATCH v5 09/12] sched: add usage_load_avg · Morten Rasmussen <hidden> · 2014-09-15
Re: [PATCH v5 09/12] sched: add usage_load_avg · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-15
[PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Kamalesh Babulal <hidden> · 2014-08-27
Re: [PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-28
Re: [PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Peter Zijlstra <peterz@infradead.org> · 2014-09-10
Re: [PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-10
Re: [PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Nicolas Pitre <hidden> · 2014-09-11
Re: [PATCH v5 06/12] sched: add per rq cpu_capacity_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-09-15
[PATCH v5 05/12] ARM: topology: use new cpu_capacity interface · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26
Re: [PATCH v5 05/12] ARM: topology: use new cpu_capacity interface · Nicolas Pitre <hidden> · 2014-09-11
[PATCH v5 02/12] sched: remove a wake_affine condition · Vincent Guittot <vincent.guittot@linaro.org> · 2014-08-26

From: peterz@infradead.org (Peter Zijlstra)
Date: 2014-09-10 14:19:17
Also in: lkml

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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