Re: [PATCH 0/4 v5] sched,time: reduce nohz_full syscall overhead 40%

From	Frederic Weisbecker <fweisbec@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 0/4 v5] sched,time: reduce nohz_full syscall overhead 40%
Date	2016-02-09 03:20 +0100
Message-ID	<r064h-5L7-1@gated-at.bofh.it> (permalink)
References	<qXMW5-6lS-7@gated-at.bofh.it> <r01eh-2kE-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Mon, Feb 08, 2016 at 04:07:24PM -0500, Rik van Riel wrote:
> On 02/02/2016 12:19 PM, riel@redhat.com wrote:
> > (v5: address comments by Frederic & Peter, fix bug found by Eric)
> > 
> > Running with nohz_full introduces a fair amount of overhead.
> > Specifically, various things that are usually done from the
> > timer interrupt are now done at syscall, irq, and guest
> > entry and exit times.
> 
> It looks like nobody has objections to my v5
> series.
> 
> Is there anything else I need to do before these
> patches can get merged?

Sorry for the delay, I'm going to review and respond to it tomorrow.

> 
> Also, who is going to merge these patches into
> their tree?
> 
> Frederic? Thomas? Ingo?

Eventually I think this should go through Peterz/Ingo as it's scheduler code.

Thanks.

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[PATCH 0/4 v5] sched,time: reduce nohz_full syscall overhead 40% riel@redhat.com - 2016-02-02 18:30 +0100
  [PATCH 1/4] sched,time: remove non-power-of-two divides from __acct_update_integrals riel@redhat.com - 2016-02-02 18:30 +0100
  [PATCH 4/4] sched,time: only call account_{user,sys,guest,idle}_time once a jiffy riel@redhat.com - 2016-02-02 18:30 +0100
    Re: [PATCH 4/4] sched,time: only call  account_{user,sys,guest,idle}_time once a jiffy Frederic Weisbecker <fweisbec@gmail.com> - 2016-02-09 18:20 +0100
      Re: [PATCH 4/4] sched,time: only call  account_{user,sys,guest,idle}_time once a jiffy Rik van Riel <riel@redhat.com> - 2016-02-09 19:20 +0100
      Re: [PATCH 4/4] sched,time: only call  account_{user,sys,guest,idle}_time once a jiffy Rik van Riel <riel@redhat.com> - 2016-02-09 22:30 +0100
  [PATCH 2/4] acct,time: change indentation in __acct_update_integrals riel@redhat.com - 2016-02-02 18:30 +0100
  Re: [PATCH 0/4 v5] sched,time: reduce nohz_full syscall overhead 40% Rik van Riel <riel@redhat.com> - 2016-02-08 22:10 +0100
    Re: [PATCH 0/4 v5] sched,time: reduce nohz_full syscall overhead 40% Frederic Weisbecker <fweisbec@gmail.com> - 2016-02-09 03:20 +0100

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