linux-kernel - Re: [RFCv3 PATCH 18/48] sched: Track blocked utilization contributions

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Message-ID: <20150323140801.GH23123@twins.programming.kicks-ass.net>
Date:	Mon, 23 Mar 2015 15:08:01 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Morten Rasmussen <morten.rasmussen@....com>
Cc:	mingo@...hat.com, vincent.guittot@...aro.org,
	dietmar.eggemann@....com, yuyang.du@...el.com,
	preeti@...ux.vnet.ibm.com, mturquette@...aro.org, nico@...aro.org,
	rjw@...ysocki.net, juri.lelli@....com, linux-kernel@...r.kernel.org
Subject: Re: [RFCv3 PATCH 18/48] sched: Track blocked utilization
 contributions

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.. 
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