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SubjectRe: ext3 IO latency measurements (was: Linux 2.6.29)
On Thu, 26 Mar 2009 12:08:15 +0100
Jens Axboe <> wrote:
> Did you capture the trace of the long delays in the read test case? It
> can be two things, at least. One is that each little read takes much
> longer than it should, the other is that we get stuck waiting on a
> dirty page and hence that slows down the reads a lot.

would be interesting to run latencytop during such runs...

Arjan van de Ven Intel Open Source Technology Centre
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