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From: Mike Galbraith <mgalbraith@suse.de>
To: Rik van Riel <riel@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	mingo@kernel.org, linux-kernel@vger.kernel.org
Cc: clm@fb.com, matt@codeblueprint.co.uk, tglx@linutronix.de,
	fweisbec@gmail.com
Subject: Re: [RFC][PATCH 8/7] sched/fair: Use utilization distance to filter affine sync wakeups
Date: Fri, 20 May 2016 04:52:58 +0200	[thread overview]
Message-ID: <1463712778.3723.13.camel@suse.de> (raw)
In-Reply-To: <1463694214.16149.36.camel@redhat.com>

On Thu, 2016-05-19 at 17:43 -0400, Rik van Riel wrote:
> On Wed, 2016-05-18 at 07:51 +0200, Mike Galbraith wrote:
> > On Mon, 2016-05-09 at 12:48 +0200, Peter Zijlstra wrote:
> > > Hai,
> > 
> > (got some of the frozen variety handy?:)
> > 
> > > here be a semi coherent patch series for the recent
> > > select_idle_siblings()
> > > tinkering. Happy benchmarking..
> > 
> > And tinkering on top of your rewrite series...
> > 
> > sched/fair: Use utilization distance to filter affine sync wakeups
> > 
> 
> Nice. This looks like it could be a lot more robust
> than the stuff that was there before.

That's the hope.  I kinda doubt it'll make any big difference in the
real world, but should help some.. wild theory being that the 
 microbenchmarks it definitely does help were based at least in part
upon some aspect of real world loads.

	-Mike

  reply	other threads:[~2016-05-20  2:53 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-09 10:48 [RFC][PATCH 0/7] sched: select_idle_siblings rewrite Peter Zijlstra
2016-05-09 10:48 ` [RFC][PATCH 1/7] sched: Remove unused @cpu argument from destroy_sched_domain*() Peter Zijlstra
2016-05-09 10:48 ` [RFC][PATCH 2/7] sched: Restructure destroy_sched_domain() Peter Zijlstra
2016-05-09 14:46   ` Peter Zijlstra
2016-05-09 10:48 ` [RFC][PATCH 3/7] sched: Introduce struct sched_domain_shared Peter Zijlstra
2016-05-09 10:48 ` [RFC][PATCH 4/7] sched: Replace sd_busy/nr_busy_cpus with sched_domain_shared Peter Zijlstra
2016-05-11 11:55   ` Matt Fleming
2016-05-11 12:33     ` Peter Zijlstra
2016-05-11 18:11       ` Peter Zijlstra
2016-05-11 18:24       ` Peter Zijlstra
2016-05-12  2:05         ` Michael Neuling
2016-05-12  5:07           ` Peter Zijlstra
2016-05-12 11:07             ` Michael Neuling
2016-05-12 11:33               ` Peter Zijlstra
2016-05-13  0:12                 ` Michael Neuling
2016-05-16 14:00                   ` Peter Zijlstra
2016-05-17 10:20                     ` Peter Zijlstra
2016-05-17 10:52                       ` Srikar Dronamraju
2016-05-17 11:15                         ` Peter Zijlstra
2016-05-11 17:37     ` Peter Zijlstra
2016-05-11 18:04       ` Matt Fleming
2016-05-16 15:31   ` Dietmar Eggemann
2016-05-16 17:02     ` Peter Zijlstra
2016-05-16 17:26       ` Dietmar Eggemann
2016-05-09 10:48 ` [RFC][PATCH 5/7] sched: Rewrite select_idle_siblings() Peter Zijlstra
2016-05-10 21:05   ` Yuyang Du
2016-05-11  7:00     ` Peter Zijlstra
2016-05-10 23:42       ` Yuyang Du
2016-05-11  7:43         ` Mike Galbraith
2016-05-09 10:48 ` [RFC][PATCH 6/7] sched: Optimize SCHED_SMT Peter Zijlstra
2016-05-09 10:48 ` [RFC][PATCH 7/7] sched: debug muck -- not for merging Peter Zijlstra
2016-05-10  0:50 ` [RFC][PATCH 0/7] sched: select_idle_siblings rewrite Chris Mason
2016-05-11 14:19 ` Chris Mason
2016-05-18  5:51 ` [RFC][PATCH 8/7] sched/fair: Use utilization distance to filter affine sync wakeups Mike Galbraith
2016-05-19 21:43   ` Rik van Riel
2016-05-20  2:52     ` Mike Galbraith [this message]
2016-05-25 14:51 ` [RFC][PATCH 0/7] sched: select_idle_siblings rewrite Chris Mason
2016-05-25 16:24   ` Peter Zijlstra
2016-05-25 17:11     ` Chris Mason

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