linux-kernel - Re: [PATCH 0/2 v2] sched: improve spread of tasks during fork

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Message-ID: <20161128170256.GB20785@codeblueprint.co.uk>
Date:   Mon, 28 Nov 2016 17:02:56 +0000
From:   Matt Fleming <matt@...eblueprint.co.uk>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     peterz@...radead.org, mingo@...nel.org,
        linux-kernel@...r.kernel.org, Morten.Rasmussen@....com,
        dietmar.eggemann@....com, kernellwp@...il.com, yuyang.du@...el.com,
        umgwanakikbuti@...il.com
Subject: Re: [PATCH 0/2 v2] sched: improve spread of tasks during fork

On Fri, 25 Nov, at 04:34:31PM, Vincent Guittot wrote:
> This patchset was originally 1 patch but a perf regression happened during the rebase.
> The patch 01 fixes the perf regression discovered in tip/sched/core during the
> rebase.
> The patch 02 is the rebase of the patch that fixes the regression raised by
> Matt Fleming [1].
> 
> [1] https://lkml.org/lkml/2016/10/18/206
> 
> Vincent Guittot (2):
>   sched: fix find_idlest_group for fork
>   sched: use load_avg for selecting idlest group
> 
>  kernel/sched/fair.c | 54 +++++++++++++++++++++++++++++++++++++++++++----------
>  1 file changed, 44 insertions(+), 10 deletions(-)

FYI, I'm running both of these patches through the SUSE performance
testing grid right now. I'll let you know as soon as I have results
(should be in the next few days).