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Date: Tue, 24 Mar 2015 09:43:47 +0000
From: Morten Rasmussen <morten.rasmussen@arm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "mingo@redhat.com" <mingo@redhat.com>,
        "vincent.guittot@linaro.org" <vincent.guittot@linaro.org>,
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        Juri Lelli <Juri.Lelli@arm.com>,
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Subject: Re: [RFCv3 PATCH 18/48] sched: Track blocked utilization
 contributions
Message-ID: <20150324094347.GB18994@e105550-lin.cambridge.arm.com>
References: <1423074685-6336-1-git-send-email-morten.rasmussen@arm.com>
 <1423074685-6336-19-git-send-email-morten.rasmussen@arm.com>
 <20150323140801.GH23123@twins.programming.kicks-ass.net>
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On Mon, Mar 23, 2015 at 02:08:01PM +0000, Peter Zijlstra wrote:
> On Wed, Feb 04, 2015 at 06:30:55PM +0000, Morten Rasmussen wrote:
> > Introduces the blocked utilization, the utilization counter-part to
> > cfs_rq->utilization_load_avg. It is the sum of sched_entity utilization
> > contributions of entities that were recently on the cfs_rq that are
> > currently blocked. Combined with sum of contributions of entities
> > currently on the cfs_rq or currently running
> > (cfs_rq->utilization_load_avg) this can provide a more stable average
> > view of the cpu usage.
> 
> So it would be nice if you add performance numbers for all these patches
> that add accounting muck.. 

Total scheduler latency (as in hackbench?), individual function
latencies, or something else?