Groups > linux.kernel > #1520085

Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature

From	Peter Zijlstra <peterz@infradead.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature
Date	2016-11-12 00:00 +0100
Message-ID	<sCsXE-27K-9@gated-at.bofh.it> (permalink)
References	(5 earlier) <sBkps-5em-47@gated-at.bofh.it> <sBkIO-5kY-27@gated-at.bofh.it> <sBBgB-7T9-1@gated-at.bofh.it> <sCp3H-7YK-3@gated-at.bofh.it> <sCp3H-7YK-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Nov 11, 2016 at 12:46:37PM -0600, Christoph Lameter wrote:
> On Thu, 10 Nov 2016, Daniel Vacek wrote:
> 
> > I believe Daniel's patches are the best thing we can do in current
> > situation as the behavior now seems rather buggy and does not provide above
> > mentioned expectations set when rt throttling was merged with default
> > budget of 95% of CPU time. Nor if you configure so that it does (by
> > disabling RT_RUNTIME_SHARE), it also forces CPUs to go idle needlessly when
> > there still can be rt task running not really starving anyone. At least
> > till a proper rework of rt scheduling with DL Server is implemented.
> 
> This looks like a fix for a bug and the company I work for is suffering
> as a result. Could we please merge that ASAP?
> 

What bug? And no, the patch has as many technical issues as it has
conceptual ones.

Thread

[PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <bristot@redhat.com> - 2016-11-07 09:20 +0100
  Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Tommaso Cucinotta <tommaso.cucinotta@sssup.it> - 2016-11-07 11:40 +0100
    Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <bristot@redhat.com> - 2016-11-07 15:00 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Tommaso Cucinotta <tommaso.cucinotta@sssup.it> - 2016-11-07 19:10 +0100
        Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Luca Abeni <luca.abeni@unitn.it> - 2016-11-07 19:30 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature luca abeni <lucabe72@gmail.com> - 2016-11-08 09:00 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Juri Lelli <juri.lelli@arm.com> - 2016-11-08 11:40 +0100
  Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Christoph Lameter <cl@linux.com> - 2016-11-07 18:00 +0100
    Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 19:40 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <daniel@bristot.me> - 2016-11-07 19:50 +0100
        Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 20:20 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Christoph Lameter <cl@linux.com> - 2016-11-07 20:40 +0100
        Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Christoph Lameter <cl@linux.com> - 2016-11-07 21:00 +0100
          Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 21:10 +0100
            Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <daniel@bristot.me> - 2016-11-07 21:10 +0100
              Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 21:20 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <daniel@bristot.me> - 2016-11-07 21:40 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 21:50 +0100
                [PATCH] sched/rt: Change default setup for RT THROTTLING Daniel Bristot de Oliveira <daniel@bristot.me> - 2016-11-08 10:30 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Christoph Lameter <cl@linux.com> - 2016-11-09 00:50 +0100
        Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 21:10 +0100
  Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Clark Williams <williams@redhat.com> - 2016-11-07 19:30 +0100
    Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-07 19:40 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <daniel@bristot.me> - 2016-11-07 19:50 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Clark Williams <williams@redhat.com> - 2016-11-07 20:00 +0100
  Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Peter Zijlstra <peterz@infradead.org> - 2016-11-08 13:30 +0100
    Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-08 15:10 +0100
      Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Peter Zijlstra <peterz@infradead.org> - 2016-11-08 18:00 +0100
        Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Steven Rostedt <rostedt@goodmis.org> - 2016-11-08 18:20 +0100
          Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Peter Zijlstra <peterz@infradead.org> - 2016-11-08 19:10 +0100
            Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <bristot@redhat.com> - 2016-11-08 20:40 +0100
              Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Peter Zijlstra <peterz@infradead.org> - 2016-11-08 21:00 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Daniel Bristot de Oliveira <bristot@redhat.com> - 2016-11-09 14:40 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Christoph Lameter <cl@linux.com> - 2016-11-11 19:50 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Peter Zijlstra <peterz@infradead.org> - 2016-11-12 00:00 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Christoph Lameter <cl@linux.com> - 2016-11-13 20:00 +0100
                Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature Peter Zijlstra <peterz@infradead.org> - 2016-11-14 10:30 +0100

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