linux-kernel - Re: [PATCH 1/3 v2] sched/fair: skip idle cfs

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Message-ID: <20210111144608.GF3524@suse.de>
Date:   Mon, 11 Jan 2021 14:46:08 +0000
From:   Mel Gorman <mgorman@...e.de>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        bristot@...hat.com, valentin.schneider@....com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3 v2] sched/fair: skip idle cfs_rq

On Thu, Jan 07, 2021 at 11:33:23AM +0100, Vincent Guittot wrote:
> Don't waste time checking whether an idle cfs_rq could be the busiest
> queue. Furthermore, this can end up selecting a cfs_rq with a high load
> but being idle in case of migrate_load.
> 
> Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org>
> Reviewed-by: Valentin Schneider <valentin.schneider@....com>

Acked-by: Mel Gorman <mgorman@...e.de>

-- 
Mel Gorman
SUSE Labs