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SubjectRe: Ext2 directory index, updated
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Date
Daniel Phillips <phillips@bonn-fries.net> writes:

> On November 4, 2001 11:09 pm, Christian Laursen wrote:
> > Daniel Phillips <phillips@bonn-fries.net> writes:
> >
> > > ***N.B.: still for use on test partitions only.***
> >
> > It's the first time, I've tried this patch and I must say, that
> > the first impression is very good indeed.
> >
> > I took a real world directory (my linux-kernel MH folder containing
> > roughly 115000 files) and did a 'du -s' on it.
> >
> > Without the patch it took a little more than 20 minutes to complete.
> >
> > With the patch, it took less than 20 seconds. (And that was inside uml)
>
> Which kernel are you using?

Actually, it was on a 2.2.20 kernel.

> From 2.4.10 on ext2 has an accelerator in
> ext2_find_entry - it caches the last lookup position. I'm wondering how that
> affects this case.

>From the description I read a while ago, I believe it could cause a significant
speedup.

I'll have to try that out one of these days.

--
Best regards
Christian Laursen
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