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    SubjectRe: 2.6.20-rc2+: CFQ halving disk throughput.


    On Mon, 1 Jan 2007, Rene Herman wrote:

    > Rene Herman wrote:
    >
    > > In fact, it's CFQ. The PATA thing was a red herring. 2.6.20-rc2 and 3 give
    > > me ~ 24 MB/s from "hdparm t /dev/hda" while 2.6.20-rc1 and below give me ~
    > > 50 MB/s.
    > >
    > > Jens: this is due to "[PATCH] cfq-iosched: tighten allow merge criteria",
    > > 719d34027e1a186e46a3952e8a24bf91ecc33837:
    >
    > axboe@oracle.com bounces for me. Could one of the other recipients of parent
    > message try to forward?

    It should be "Jens Axboe <jens.axboe@oracle.com>".

    Jens was away over the holidays, hopefully he'll be back today or
    tomorrow.

    Linus
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