linux-kernel - Re: [PATCH 3/4] sched/fair: Do not migrate on wake_affine

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Message-ID: <20180212195720.GC25201@hirez.programming.kicks-ass.net>
Date:   Mon, 12 Feb 2018 20:57:20 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Mike Galbraith <efault@....de>
Cc:     Mel Gorman <mgorman@...hsingularity.net>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] sched/fair: Do not migrate on wake_affine_weight if
 weights are equal

On Mon, Feb 12, 2018 at 08:14:49PM +0100, Mike Galbraith wrote:
> On Mon, 2018-02-12 at 18:29 +0100, Peter Zijlstra wrote:

> > Except for sync wakeups, where you say, if everything else is equal,
> > pull, which also makes sense, because sync says 'current' promises to go
> > away.
> 
> Tasks tend to not honor that promise.. a lot.

Yes I know.. still its something and its a very small bias in this case.