Re: linux-2.4.10-pre5

Rik van Riel
2001-09-11T06:26:01Z

On Mon, 10 Sep 2001, Linus Torvalds wrote:
> > On September 11, 2001 12:39 am, Rik van Riel wrote:

> > > This suggests we may want to do agressive readahead on the
> > > inode blocks.

> So it' snot just about preloading. It's also about knowing about access
> patterns beforehand - something that the kernel really cannot do.
>
> Pre-loading your cache always depends on some limited portion of
> prescience.

OTOH, agressively pre-loading metadata should be ok in a lot
of cases, because metadata is very small, but wastes about
half of our disk time because of the seeks ...

regards,

Rik
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