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Re: [patch] sched/fair: Move se->vruntime normalization state into struct sched_entity

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [patch] sched/fair: Move se->vruntime normalization state into struct sched_entity
Date 2016-05-22 11:40 +0200
Message-ID <rBy1A-7y6-9@gated-at.bofh.it> (permalink)
References <rxjXd-7jo-31@gated-at.bofh.it> <rxjXd-7jo-29@gated-at.bofh.it> <rBfLk-4uH-7@gated-at.bofh.it> <rBkrE-7qE-13@gated-at.bofh.it> <rBvGp-6hJ-1@gated-at.bofh.it>
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On Sun, May 22, 2016 at 09:00:01AM +0200, Mike Galbraith wrote:
> On Sat, 2016-05-21 at 21:00 +0200, Mike Galbraith wrote:
> > On Sat, 2016-05-21 at 16:04 +0200, Mike Galbraith wrote:
> > 
> > > Wakees that were not migrated/normalized eat an unwanted min_vruntime,
> > > and likely take a size XXL latency hit.  Big box running master bled
> > > profusely under heavy load until I turned TTWU_QUEUE off.
> 
> May as well make it official and against master.today.  Fly or die
> little patchlet.
> 
> sched/fair: Move se->vruntime normalization state into struct sched_entity

Yeah, I used to have a patch like this; but for debugging. I don't
particularly like carrying this information other than for verification
because it means we either do too much or too little normalization.

I'll try and have a look on Monday, but I got some real-life things to
sort out first..

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Re: [PATCH 2/3] sched,fair: Fix local starvation Mike Galbraith <mgalbraith@suse.de> - 2016-05-21 16:10 +0200
  Re: [PATCH 2/3] sched,fair: Fix local starvation Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-05-21 21:10 +0200
    [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-05-22 09:10 +0200
      Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Peter Zijlstra <peterz@infradead.org> - 2016-05-22 11:40 +0200
        Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-05-22 12:00 +0200
        Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Peter Zijlstra <peterz@infradead.org> - 2016-05-22 12:40 +0200
      Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Peter Zijlstra <peterz@infradead.org> - 2016-05-23 11:20 +0200
        Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-05-23 11:50 +0200
          Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Wanpeng Li <kernellwp@gmail.com> - 2016-05-23 12:20 +0200
            Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-05-23 12:30 +0200
          Re: [patch] sched/fair: Move se->vruntime normalization state into  struct sched_entity Peter Zijlstra <peterz@infradead.org> - 2016-05-23 14:30 +0200
        [tip:sched/urgent] sched/core: Fix remote wakeups tip-bot for Peter Zijlstra <tipbot@zytor.com> - 2016-05-25 09:20 +0200
  Re: [PATCH 2/3] sched,fair: Fix local starvation Wanpeng Li <kernellwp@gmail.com> - 2016-05-22 09:00 +0200
    Re: [PATCH 2/3] sched,fair: Fix local starvation Mike Galbraith <mgalbraith@suse.de> - 2016-05-22 09:20 +0200
      Re: [PATCH 2/3] sched,fair: Fix local starvation Wanpeng Li <kernellwp@gmail.com> - 2016-05-22 09:30 +0200
        Re: [PATCH 2/3] sched,fair: Fix local starvation Mike Galbraith <mgalbraith@suse.de> - 2016-05-22 09:40 +0200
          Re: [PATCH 2/3] sched,fair: Fix local starvation Wanpeng Li <kernellwp@gmail.com> - 2016-05-22 09:50 +0200
            Re: [PATCH 2/3] sched,fair: Fix local starvation Mike Galbraith <mgalbraith@suse.de> - 2016-05-22 10:10 +0200
              Re: [PATCH 2/3] sched,fair: Fix local starvation Wanpeng Li <kernellwp@gmail.com> - 2016-05-22 10:30 +0200
                Re: [PATCH 2/3] sched,fair: Fix local starvation Mike Galbraith <mgalbraith@suse.de> - 2016-05-22 10:40 +0200
                Re: [PATCH 2/3] sched,fair: Fix local starvation Wanpeng Li <kernellwp@gmail.com> - 2016-05-22 11:00 +0200

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