linux-kernel - Re: [PATCH v3 4/5] sched/fair: Remove sysctl_sched_migration

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Date:   Thu, 21 Oct 2021 10:46:21 +0100
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, linux-kernel@...r.kernel.org,
        tim.c.chen@...ux.intel.com
Subject: Re: [PATCH v3 4/5] sched/fair: Remove sysctl_sched_migration_cost
 condition

On Tue, Oct 19, 2021 at 02:35:36PM +0200, Vincent Guittot wrote:
> With a default value of 500us, sysctl_sched_migration_cost is
> significanlty higher than the cost of load_balance. Remove the
> condition and rely on the sd->max_newidle_lb_cost to abort
> newidle_balance.
> 
> Suggested-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org>

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

-- 
Mel Gorman
SUSE Labs