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Date: Sat, 28 Jul 2007 09:29:55 -0700
From: "Ray Lee" <ray-lk@madrabbit.org>
Subject: Re: RFT: updatedb "morning after" problem [was: Re: -mm merge plans for 2.6.23]
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
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On 7/28/07, Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> Actual physical disk ops are precious resource and anything that mostly
> reduces the number will be a win - not to stay swap prefetch is the right
> answer but accidentally or otherwise there are good reasons it may happen
> to help.
>
> Bigger more linear chunks of writeout/readin is much more important I
> suspect than swap prefetching.

<nod>. The larger the chunks are that we swap out, the less it
actually hurts to swap, which might make all this a moot point. Not
all I/O is created equal...

Ray

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