Re: Understanding I/O behaviour

From: Jesper Juhl
Date: Thu Jul 05 2007 - 19:53:19 EST


On 06/07/07, Robert Hancock <hancockr@xxxxxxx> wrote:
[snip]

Try playing with reducing /proc/sys/vm/dirty_ratio and see how that
helps. This workload will fill up memory with dirty data very quickly,
and it seems like system responsiveness often goes down the toilet when
this happens and the system is going crazy trying to write it all out.


Perhaps trying out a different elevator would also be worthwhile.

--
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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