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Re: group scheduler regression since 4.3 (bisect 9d89c257d sched/fair: Rewrite runnable load and utilization average tracking)

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: group scheduler regression since 4.3 (bisect 9d89c257d sched/fair: Rewrite runnable load and utilization average tracking)
Date 2016-09-26 14:00 +0200
Message-ID <slCJI-3nN-29@gated-at.bofh.it> (permalink)
References <slBDX-2Mp-3@gated-at.bofh.it> <slBND-2PA-1@gated-at.bofh.it> <slCA2-3kx-25@gated-at.bofh.it>
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On Mon, Sep 26, 2016 at 01:42:05PM +0200, Christian Borntraeger wrote:
> On 09/26/2016 12:56 PM, Peter Zijlstra wrote:

> > One of the differences in the old and new thing is being addressed by
> > these patches:
> > 
> >   https://lkml.kernel.org/r/1473666472-13749-1-git-send-email-vincent.guittot@linaro.org
> > 
> > Could you see if those patches make a difference? If not, we'll have to
> > go poke elsewhere ofcourse ;-)
> 
> Those patches do not apply cleanly on v4.7, linux/master or next/master.
> Is there a good branch to test these patches?

They seemed to apply for me on tip/sched/core, I pushed out a branch for
you that has them on.

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/propagate

I didn't boot the result though; but they applied without issue.

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group scheduler regression since 4.3 (bisect 9d89c257d sched/fair:  Rewrite runnable load and utilization average tracking) Christian Borntraeger <borntraeger@de.ibm.com> - 2016-09-26 12:50 +0200
  Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Peter Zijlstra <peterz@infradead.org> - 2016-09-26 13:00 +0200
    Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Christian Borntraeger <borntraeger@de.ibm.com> - 2016-09-26 13:50 +0200
      Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Peter Zijlstra <peterz@infradead.org> - 2016-09-26 14:00 +0200
        Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Christian Borntraeger <borntraeger@de.ibm.com> - 2016-09-26 14:10 +0200
          Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Peter Zijlstra <peterz@infradead.org> - 2016-09-26 14:20 +0200
            Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Christian Borntraeger <borntraeger@de.ibm.com> - 2016-09-26 15:00 +0200
            Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Christian Borntraeger <borntraeger@de.ibm.com> - 2016-09-26 16:20 +0200
    Re: group scheduler regression since 4.3 (bisect 9d89c257d  sched/fair: Rewrite runnable load and utilization average tracking) Vincent Guittot <vincent.guittot@linaro.org> - 2016-09-26 14:30 +0200

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