Re: RFT: updatedb "morning after" problem [was: Re: -mm merge plans for 2.6.23]

From: Ray Lee
Date: Sat Jul 28 2007 - 12:30:11 EST


On 7/28/07, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> 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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/