[PATCH v3 07/12] sched: test the cpu's capacity in wake affine

[PATCH v3 00/12] sched: consolidation of cpu_power · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
[PATCH v3 01/12] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Preeti U Murthy <hidden> · 2014-07-08
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-08
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Preeti U Murthy <hidden> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Peter Zijlstra <peterz@infradead.org> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Preeti U Murthy <hidden> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Peter Zijlstra <peterz@infradead.org> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-10
[PATCH v4 ] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-10
Re: [PATCH v4 ] sched: fix imbalance flag reset · Preeti U Murthy <hidden> · 2014-07-10
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Preeti U Murthy <hidden> · 2014-07-10
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Rik van Riel <hidden> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Rik van Riel <hidden> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Peter Zijlstra <peterz@infradead.org> · 2014-07-09
Re: [PATCH v3 01/12] sched: fix imbalance flag reset · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-09
[PATCH v3 03/12] sched: fix avg_load computation · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 03/12] sched: fix avg_load computation · Rik van Riel <hidden> · 2014-07-09
[PATCH v3 06/12] sched: add per rq cpu_power_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 06/12] sched: add per rq cpu_power_orig · Rik van Riel <hidden> · 2014-07-09
Re: [PATCH v3 06/12] sched: add per rq cpu_power_orig · Amit Kucheria <hidden> · 2014-07-09
[PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Peter Zijlstra <peterz@infradead.org> · 2014-07-10
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-11
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Peter Zijlstra <peterz@infradead.org> · 2014-07-11
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-11
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Peter Zijlstra <peterz@infradead.org> · 2014-07-11
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Morten Rasmussen <hidden> · 2014-07-14
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Peter Zijlstra <peterz@infradead.org> · 2014-07-14
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Morten Rasmussen <hidden> · 2014-07-14
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Peter Zijlstra <peterz@infradead.org> · 2014-07-14
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-15
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Dietmar Eggemann <dietmar.eggemann@arm.com> · 2014-07-14
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Yuyang Du <hidden> · 2014-07-18
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Morten Rasmussen <hidden> · 2014-07-11
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-15
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Morten Rasmussen <hidden> · 2014-07-15
Re: [PATCH v3 09/12] Revert "sched: Put rq's sched_avg under CONFIG_FAIR_GROUP_SCHED" · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-15
[PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-07-10
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-10
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-07-11
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-11
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-07-14
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-15
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-07-10
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-10
Re: [PATCH v3 08/12] sched: move cfs task on a CPU with higher capacity · Peter Zijlstra <peterz@infradead.org> · 2014-07-10
[PATCH v3 12/12] sched: add SD_PREFER_SIBLING for SMT level · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
[PATCH v3 11/12] sched: replace capacity_factor by utilization · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
[PATCH v3 10/12] sched: get CPU's utilization statistic · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
[PATCH v3 07/12] sched: test the cpu's capacity in wake affine · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 07/12] sched: test the cpu's capacity in wake affine · Rik van Riel <hidden> · 2014-07-09
Re: [PATCH v3 07/12] sched: test the cpu's capacity in wake affine · Peter Zijlstra <peterz@infradead.org> · 2014-07-10
Re: [PATCH v3 07/12] sched: test the cpu's capacity in wake affine · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-10
[PATCH v3 05/12] ARM: topology: use new cpu_power interface · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 05/12] ARM: topology: use new cpu_power interface · Rik van Riel <hidden> · 2014-07-09
Re: [PATCH v3 05/12] ARM: topology: use new cpu_power interface · Amit Kucheria <hidden> · 2014-07-09
Re: [PATCH v3 05/12] ARM: topology: use new cpu_power interface · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-09
[PATCH v3 04/12] sched: Allow all archs to set the power_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 04/12] sched: Allow all archs to set the power_orig · Rik van Riel <hidden> · 2014-07-09
Re: [PATCH v3 04/12] sched: Allow all archs to set the power_orig · Peter Zijlstra <peterz@infradead.org> · 2014-07-09
Re: [PATCH v3 04/12] sched: Allow all archs to set the power_orig · Vincent Guittot <vincent.guittot@linaro.org> · 2014-07-10
[PATCH v3 02/12] sched: remove a wake_affine condition · Vincent Guittot <vincent.guittot@linaro.org> · 2014-06-30
Re: [PATCH v3 02/12] sched: remove a wake_affine condition · Rik van Riel <hidden> · 2014-07-09

From: Rik van Riel <hidden>
Date: 2014-07-09 03:13:25
Also in: lkml

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Hash: SHA1

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 <redacted>


- -- 
All rights reversed
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