linux-kernel - Re: [PATCH v8 0/4] sched: Rewrite runnable load and utilization average tracking

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Date:	Tue, 16 Jun 2015 02:46:27 +0800
From:	Yuyang Du <yuyang.du@...el.com>
To:	Boqun Feng <boqun.feng@...il.com>
Cc:	mingo@...nel.org, peterz@...radead.org,
	linux-kernel@...r.kernel.org, pjt@...gle.com, bsegall@...gle.com,
	morten.rasmussen@....com, vincent.guittot@...aro.org,
	dietmar.eggemann@....com, arjan.van.de.ven@...el.com,
	len.brown@...el.com, rafael.j.wysocki@...el.com,
	fengguang.wu@...el.com,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Subject: Re: [PATCH v8 0/4] sched: Rewrite runnable load and utilization
 average tracking

Hi Boqun,

Thanks for the tests.

Indeed I can't find the 8th versio myself in the archive. That is weird.
Vincent sure received the patches, but maybe not the list, then that is
interesting...

Anyway, I will rebase the patches up-to-date, and resend it to the list
shortly.

Regarding test results, "less than 50% sometimes" meaning imbalanced?
What about versus the stock kernel?

Regards,
Yuyang

On Mon, Jun 15, 2015 at 06:38:56PM +0800, Boqun Feng wrote:
> Hi Yuyang,
> 
> We have tested your V7 patchset as follow:
> 
> On Intel(R) Xeon(R) CPU X5690 (12 cores), run 12 stress and 6 dbench.
> Results show that usages of some CPUs are less than 50% sometimes.
> 
> We would like to test your V8 patchset, but I can neither find it in a
> lkml archive, nor in my lkml subscription. Would you please send me your
> V8 patchset, if convenient? Or a public git tree works too!
> 
> Regards,
> Boqun
> 
> On Tue, Jun 09, 2015 at 09:21:43AM +0800, Yuyang Du wrote:
> > Ping ...
> > 
> > Plus some data tested by LKP:
> > 
> > To name a few host configurations:
> > 
> > host: brickland3
> > model: Brickland Ivy Bridge-EX
> > nr_cpu: 120
> > memory: 512G
> > 
> > host: lkp-a03
> > model: Atom
> > memory: 8G
> > 
> > host: grantley
> > model: Grantley Haswell-EP
> > memory: 32G
> > 
> > host: ivb43
> > model: Ivytown Ivy Bridge-EP
> > nr_cpu: 48
> > memory: 64G
> > 
> [snip]


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