linux-kernel - Re: [RFC] Block IO Controller V1

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Message-ID: <20091104193852.GN2870@redhat.com>
Date:	Wed, 4 Nov 2009 14:38:52 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	linux-kernel@...r.kernel.org, jens.axboe@...cle.com,
	nauman@...gle.com, dpshah@...gle.com, lizf@...fujitsu.com,
	ryov@...inux.co.jp, fernando@....ntt.co.jp, s-uchida@...jp.nec.com,
	taka@...inux.co.jp, guijianfeng@...fujitsu.com,
	balbir@...ux.vnet.ibm.com, righi.andrea@...il.com,
	m-ikeda@...jp.nec.com, akpm@...ux-foundation.org, riel@...hat.com,
	kamezawa.hiroyu@...fujitsu.com
Subject: Re: [RFC] Block IO Controller V1

On Wed, Nov 04, 2009 at 02:27:10PM -0500, Jeff Moyer wrote:
> Vivek Goyal <vgoyal@...hat.com> writes:
> 
> > On Wed, Nov 04, 2009 at 02:12:19PM -0500, Jeff Moyer wrote:
> >> Vivek Goyal <vgoyal@...hat.com> writes:
> >> 
> >> > Hi All,
> >> >
> >> > This is V1 of the Block IO controller patches on top of 2.6.32-rc5.
> >> >
> >> > A consolidated patch can be found here:
> >> >
> >> > http://people.redhat.com/vgoyal/io-controller/blkio-controller/blkio-controller-v1.patch
> >> 
> >> Overall it looks good.  Vivek, could you please run some benchmarks
> >> against a vanilla kernel and then with your patch applied and cgroups
> >> compiled in but not configured?
> >> 
> >
> > Sure I can. Do you have something specific in mind?
> 
> I don't, actually.  iozone comes to mind as a simple test to setup and
> run.  Or you could run one or more of the fio sample job files.  Really,
> I just want to see if we're taking a huge performance hit so we can fix
> that up before it's merged.

Sure, will run some tests to see if this patchset is introducing any huge
performance regressions somewhere.

Thanks
Vivek
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