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From: Vincent Guittot <vincent.guittot@linaro.org>
To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
	dietmar.eggemann@arm.com, rostedt@goodmis.org,
	bsegall@google.com, mgorman@suse.de, bristot@redhat.com,
	linux-kernel@vger.kernel.org
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Subject: [PATCH 0/3] Reduce number of active LB
Date: Wed,  6 Jan 2021 14:34:16 +0100	[thread overview]
Message-ID: <20210106133419.2971-1-vincent.guittot@linaro.org> (raw)

Few improvements related to active LB and the increase of LB interval.
I haven't seen any performcne impact on various benchmarks except for 
  -stress-ng mmapfork : +4.54% on my octo-core arm64
But this was somewhat expected as the changes impact mainly corner cases.

Vincent Guittot (3):
  sched/fair: skip idle cfs_rq
  sched/fair: don't set LBF_ALL_PINNED unnecessarily
  sched/fair: reduce cases for active balance

 kernel/sched/fair.c | 51 ++++++++++++++++++++++++---------------------
 1 file changed, 27 insertions(+), 24 deletions(-)

-- 
2.17.1


             reply	other threads:[~2021-01-06 13:35 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-06 13:34 Vincent Guittot [this message]
2021-01-06 13:34 ` [PATCH 1/3] sched/fair: skip idle cfs_rq Vincent Guittot
2021-01-06 15:13   ` Valentin Schneider
2021-01-06 13:34 ` [PATCH 2/3] sched/fair: don't set LBF_ALL_PINNED unnecessarily Vincent Guittot
2021-01-06 15:07   ` Peter Zijlstra
2021-01-06 15:20     ` Vincent Guittot
2021-01-06 15:32       ` Peter Zijlstra
2021-01-06 15:45         ` Vincent Guittot
2021-01-06 15:13   ` Valentin Schneider
2021-01-06 16:04     ` Vincent Guittot
2021-01-06 13:34 ` [PATCH 3/3] sched/fair: reduce cases for active balance Vincent Guittot
2021-01-06 15:13   ` Peter Zijlstra
2021-01-06 15:41     ` Vincent Guittot
2021-01-06 16:11       ` Peter Zijlstra

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