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Groups > linux.kernel > #1720900

Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag

From Mike Galbraith <efault@gmx.de>
Newsgroups linux.kernel
Subject Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag
Date 2017-08-27 20:10 +0200
Message-ID <ujaat-2MR-5@gated-at.bofh.it> (permalink)
References <uiUfn-nC-1@gated-at.bofh.it> <uiYCl-3nF-1@gated-at.bofh.it> <uiYVH-3JY-3@gated-at.bofh.it> <uiZoJ-3VU-3@gated-at.bofh.it>
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On Sat, 2017-08-26 at 23:39 -0700, Joel Fernandes wrote:
> 
> Also about real world benchmarks, in Android we have usecases that
> show that the graphics performance and we have risk of frame drops if
> we don't use the sync flag so this is a real world need.

That likely has everything to do with cpufreq not realizing that your
CPUs really are quite busy when scheduling cross core at fairly high
frequency, and not clocking up properly.

	-Mike

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Thread

[PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Joel Fernandes <joelaf@google.com> - 2017-08-27 03:10 +0200
  Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-27 07:50 +0200
    Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-27 08:10 +0200
      Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Joel Fernandes <joelaf@google.com> - 2017-08-27 08:40 +0200
        Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-27 09:20 +0200
        Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-27 20:10 +0200
          Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Joel Fernandes <joelaf@google.com> - 2017-08-28 07:30 +0200
            Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-28 08:20 +0200
              Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-28 08:50 +0200
              Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Joel Fernandes <joelaf@google.com> - 2017-08-28 18:30 +0200
                Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-28 19:20 +0200
    Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Joel Fernandes <joelaf@google.com> - 2017-08-27 08:30 +0200
    Re: [PATCH RFC/RFT] sched/fair: Improve the behavior of sync flag Mike Galbraith <efault@gmx.de> - 2017-08-27 09:00 +0200

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