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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).

--D


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