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    SubjectRe: [RFC v3] ext4: Combine barrier requests coming from fsync
    On Mon, Aug 09, 2010 at 05:07:23PM -0400, Christoph Hellwig wrote:
    > Can you try with the new barrier implementation in the
    > [PATCH, RFC] relaxed barriers
    > by making cache flushes just that and not complicated drain barrier
    > it should speed this case up a lot.

    Indeed it does! The barrier count increases to about 21000, but I also see
    much higher throughput, about 830 transactions per second (versus 12000 and 760
    respectively before Tejun's patch).


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