linux-kernel - Re: [PATCH 00/23] per device dirty throttling -v8

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Message-ID: <20070805180941.GE3244@elte.hu>
Date:	Sun, 5 Aug 2007 20:09:41 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Theodore Tso <tytso@....edu>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Claudio Martins <ctpm@....utl.pt>,
	Jörn Engel <joern@...fs.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-mm@...ck.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	miklos@...redi.hu, akpm@...ux-foundation.org, neilb@...e.de,
	dgc@....com, tomoki.sekiyama.qu@...achi.com, nikita@...sterfs.com,
	trond.myklebust@....uio.no, yingchao.zhou@...il.com,
	richard@....demon.co.uk, david@...g.hm
Subject: Re: [PATCH 00/23] per device dirty throttling -v8


* Jeff Garzik <jeff@...zik.org> wrote:

> > yeah, i didnt mean to say that it is _always_ a big issue, but "only 
> > a small number of files are read" is a very, very small minority of 
> > even the database server world.
> 
> OTOH, consider a popular Linux task, web serving.  atime results in a 
> lot of unnecessary disk traffic.

it's a big, noticeable effect on 99% of the Linux boxes.

	Ingo
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