linux-kernel - Re: [patch 00/15] CFS Bandwidth Control V6

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Date:	Wed, 15 Jun 2011 16:37:49 +0800
From:	Hu Tao <hutao@...fujitsu.com>
To:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Cc:	Paul Turner <pjt@...gle.com>, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Bharata B Rao <bharata@...ux.vnet.ibm.com>,
	Dhaval Giani <dhaval.giani@...il.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.co>
Subject: Re: [patch 00/15] CFS Bandwidth Control V6

On Tue, Jun 14, 2011 at 04:29:49PM +0900, Hidetoshi Seto wrote:
> (2011/06/14 15:58), Hu Tao wrote:
> > Hi,
> > 
> > I've run several tests including hackbench, unixbench, massive-intr
> > and kernel building. CPU is Intel(R) Xeon(R) CPU X3430  @ 2.40GHz,
> > 4 cores, and 4G memory.
> > 
> > Most of the time the results differ few, but there are problems:
> > 
> > 1. unixbench: execl throughout has about 5% drop.
> > 2. unixbench: process creation has about 5% drop.
> > 3. massive-intr: when running 200 processes for 5mins, the number
> >    of loops each process runs differ more than before cfs-bandwidth-v6.
> > 
> > The results are attached.
> 
> I know the score of unixbench is not so stable that the problem might
> be noises ... but the result of massive-intr is interesting.
> Could you give a try to find which piece (xx/15) in the series cause
> the problems?

After more tests, I found massive-intr data is not stable, too. Results
are attached. The third number in file name means which patchs are
applied, 0 means no patch applied. plot.sh is easy to generate png
files.


View attachment "massive-intr-200-300-0-1.txt" of type "text/plain" (3200 bytes)

View attachment "massive-intr-200-300-10.txt" of type "text/plain" (2848 bytes)

View attachment "massive-intr-200-300-11.txt" of type "text/plain" (3072 bytes)

View attachment "massive-intr-200-300-12.txt" of type "text/plain" (3200 bytes)

View attachment "massive-intr-200-300-13.txt" of type "text/plain" (2624 bytes)

View attachment "massive-intr-200-300-14.txt" of type "text/plain" (3008 bytes)

View attachment "massive-intr-200-300-15-1.txt" of type "text/plain" (3088 bytes)

View attachment "massive-intr-200-300-15-2.txt" of type "text/plain" (3184 bytes)

View attachment "massive-intr-200-300-15.txt" of type "text/plain" (3056 bytes)

View attachment "massive-intr-200-300-16-1.txt" of type "text/plain" (2624 bytes)

View attachment "massive-intr-200-300-1.txt" of type "text/plain" (3152 bytes)

View attachment "massive-intr-200-300-2.txt" of type "text/plain" (3120 bytes)

View attachment "massive-intr-200-300-3.txt" of type "text/plain" (3056 bytes)

View attachment "massive-intr-200-300-4.txt" of type "text/plain" (3120 bytes)

View attachment "massive-intr-200-300-5.txt" of type "text/plain" (2768 bytes)

View attachment "massive-intr-200-300-6.txt" of type "text/plain" (3072 bytes)

View attachment "massive-intr-200-300-7.txt" of type "text/plain" (2992 bytes)

View attachment "massive-intr-200-300-8.txt" of type "text/plain" (3200 bytes)

View attachment "massive-intr-200-300-9.txt" of type "text/plain" (3184 bytes)

View attachment "massive-intr-200-300-without-patch.txt" of type "text/plain" (2784 bytes)

View attachment "massive-intr-200-300-with-patch.txt" of type "text/plain" (3200 bytes)

Download attachment "plot.sh" of type "application/x-sh" (1242 bytes)