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SubjectRe: filesystem benchmarking fun
On Wed, 16 May 2007 15:13:39 -0400
Chris Mason <> wrote:

> >
> > If that's still working then the problem will _probably_ be directory
> > writeout. Possibly inodes, but they should be well-laid-out.
> >
> > Were you using dir_index? That might be screwing things up.
> Yes, dir_index. A quick test of mkfs.ext3 -O ^dir_index seems to still
> have the problem. Even though the inodes are well laid out, is the
> order they get written sane?

Should be: it uses first-fit.

> Looks like ext3 is just walking a list of
> bh/jh, maybe we can just sort the silly thing?

The IO scheduler is supposed to do that.

But I don't know what's causing this.
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