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Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg()

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg()
Date 2017-04-10 10:50 +0200
Message-ID <tuDbk-6MH-27@gated-at.bofh.it> (permalink)
References (5 earlier) <tqQqt-4p3-3@gated-at.bofh.it> <tqYR4-1na-1@gated-at.bofh.it> <tr1vA-2UA-3@gated-at.bofh.it> <tr2UG-3Xe-37@gated-at.bofh.it> <tuC5z-68L-7@gated-at.bofh.it>
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On Mon, Apr 10, 2017 at 08:39:10AM +0100, Dietmar Eggemann wrote:

> Are you planning to get rid of scale_load_down() for weight because of
> the correctness problems of the signal mentioned by Paul in this thread?

Yes; it would be good to (again) use all 20 bits of weight for the
load_avg things. It was one of the reasons we went to 20 in the first
place after all.

The patch was a quick draft and known broken, but thanks for having a
look.

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Thread

Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-28 16:50 +0200
  Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Yuyang Du <yuyang.du@intel.com> - 2017-03-29 10:20 +0200
    Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-29 12:50 +0200
      Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Yuyang Du <yuyang.du@intel.com> - 2017-03-30 04:50 +0200
      Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Paul Turner <pjt@google.com> - 2017-03-30 13:30 +0200
        Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-30 14:20 +0200
          Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-30 15:50 +0200
            Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Yuyang Du <yuyang.du@intel.com> - 2017-03-31 05:00 +0200
          Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-30 16:20 +0200
            Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Paul Turner <pjt@google.com> - 2017-03-31 00:10 +0200
              Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-31 09:10 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Paul Turner <pjt@google.com> - 2017-03-31 12:00 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-31 13:30 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Dietmar Eggemann <dietmar.eggemann@arm.com> - 2017-04-10 09:40 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-04-10 10:50 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-31 13:40 +0200
            Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Yuyang Du <yuyang.du@intel.com> - 2017-03-31 05:20 +0200
              Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Yuyang Du <yuyang.du@intel.com> - 2017-03-31 05:50 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-31 09:20 +0200
            Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Paul Turner <pjt@google.com> - 2017-03-31 13:00 +0200
              Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-03-31 13:50 +0200
                Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Peter Zijlstra <peterz@infradead.org> - 2017-04-10 12:50 +0200
        Re: [RESEND PATCH 2/2] sched/fair: Optimize __update_sched_avg() Yuyang Du <yuyang.du@intel.com> - 2017-03-31 04:50 +0200

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