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Re: [RFC][PATCH 00/14] sched/fair: A bit of a cgroup/PELT overhaul (again)..

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Hello,

On Fri, May 12, 2017 at 06:44:16PM +0200, Peter Zijlstra wrote:
> 
> Hi all,
> 
> So after staring at all that PELT stuff and working my way through it again:
> 
>   https://lkml.kernel.org/r/20170505154117.6zldxuki2fgyo53n@hirez.programming.kicks-ass.net
> 
> I started doing some patches to fix some of the identified broken.
> 
> So here are a few too many patches that do:
> 
>  - fix 'reweight_entity' to instantly propagate the change in se->load.weight.
> 
>  - rewrite/fix the propagate on migrate (attach/detach)
> 
>  - introduce the hierarchical runnable_load_avg, as proposed by Tejun.
> 
>  - synchronous detach for runnable migrates
> 
>  - aligns the PELT windows between a cfs_rq and all its se's
> 
>  - deals with random fallout from the above (some of this needs folding back
>    and reordering, but its all well past the point I should post this anyway).

The schbench results look good here.  I'll put it under more realistic
test tomorrow and see how it performs.

Thanks.

-- 
tejun

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[RFC][PATCH 00/14] sched/fair: A bit of a cgroup/PELT overhaul (again).. Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 02/14] sched/fair: Add comment to calc_cfs_shares() Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 04/14] sched/fair: More accurate reweight_entity() Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 09/14] sched/fair: Propagate an effective runnable_load_avg Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 11/14] sched/fair: Synchonous PELT detach on load-balance migrate Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 14/14] sched/fair: More accurate async detach Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 13/14] sched/fair: Align PELT windows between cfs_rq and its se Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 08/14] sched/fair: Rewrite PELT migration propagation Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 06/14] sched/fair: Move enqueue migrate handling Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
  [RFC][PATCH 03/14] sched/fair: Remove se->load.weight from se->avg.load_sum Peter Zijlstra <peterz@infradead.org> - 2017-05-12 19:30 +0200
    Re: [RFC][PATCH 03/14] sched/fair: Remove se->load.weight from se->avg.load_sum Vincent Guittot <vincent.guittot@linaro.org> - 2017-05-17 09:10 +0200
      Re: [RFC][PATCH 03/14] sched/fair: Remove se->load.weight from  se->avg.load_sum Vincent Guittot <vincent.guittot@linaro.org> - 2017-05-17 12:00 +0200
        Re: [RFC][PATCH 03/14] sched/fair: Remove se->load.weight from  se->avg.load_sum Peter Zijlstra <peterz@infradead.org> - 2017-05-17 16:40 +0200
  Re: [RFC][PATCH 00/14] sched/fair: A bit of a cgroup/PELT overhaul  (again).. Tejun Heo <tj@kernel.org> - 2017-05-17 00:10 +0200
    Re: [RFC][PATCH 00/14] sched/fair: A bit of a cgroup/PELT overhaul  (again).. Peter Zijlstra <peterz@infradead.org> - 2017-05-17 09:00 +0200

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