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

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Message-ID: <CAKfTPtDpXinEE9d+HQNjEDSrrSQONxpbQ8rOgDm7eSrJd6QgDw@mail.gmail.com>
Date:   Mon, 28 Nov 2016 18:20:17 +0100
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Matt Fleming <matt@...eblueprint.co.uk>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Morten Rasmussen <Morten.Rasmussen@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Wanpeng Li <kernellwp@...il.com>,
        Yuyang Du <yuyang.du@...el.com>,
        Mike Galbraith <umgwanakikbuti@...il.com>
Subject: Re: [PATCH 0/2 v2] sched: improve spread of tasks during fork

On 28 November 2016 at 18:02, Matt Fleming <matt@...eblueprint.co.uk> wrote:
> 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).

Thanks