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    SubjectRe: filesystem benchmarking fun
    On Wed, 16 May 2007 15:13:39 -0400
    Chris Mason <chris.mason@oracle.com> 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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