On Mon, Apr 26, 2004 at 12:26:08PM -0500, Glen Overby wrote:
> On April 26, Bruce Guenter wrote:
> > So far, XFS with an external journal has by far the best delivery rate.
> > However, as the filesystem fills and delivery concurrency increases, the
> > time required to list, read and delete the delivered files slows down to
> > unacceptable levels. Is there anything I can do, settings to modify,
> > patches to try, to improve this behavior?
>
> Some generic suggestions:
>
> - more log buffers than fewer (try 8)
>
> - It looks like you're doing a lot of metadata intense operations, so
> you should try a larger log buffer size which are available in
> version 2 logs. I wrote version 2 logs, along with some other
> changes, to speed up metadata intense benchmarks. I think 128mb
> log buffers work on linux.
>
Up to 256Kb log buffers on Linux should work now.
(i.e. 32K, 64K, 128K, 256K).
> Stay away from log striping. The last I heard, it still doesn't work.
If anyone still has problems with log striping then please let us
(me in particular) know.
Thanks,
Tim.
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