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    SubjectRe: Eradic disk access during reads
    Date
    Willy Tarreau wrote:
    > On Sun, Sep 18, 2005 at 07:16:46AM +0300, Al Boldi wrote:
    > >
    > > New synonym: eradic=erratic :)
    > >
    > > The problem seems to be a multi-access collision in the queue, which
    > > forces a ~50% reduction of thruput, which recovers with another
    > > multi-access collision. Maybe?!
    >
    > do you have anything else connected to the same controller ?

    Nothing, but hda.

    This problem only shows in 2.6.13, 2.4.31 works ok!

    Maybe this is also accociated to the block-dev read-ahead problem?

    Thanks!

    --
    Al


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