Re: ext3 multiple thread streaming write performance with 2.6.9

[Arjan van de Ven]

On Wed, 2004-10-27 at 21:04 -0700, Shantanu Goel wrote:
> Hi,
> 
> I am seeing extremely variable and poor performance
> with ext3 in the presence of multiple streaming
> writers.  Below are the results of some tests I have
> conducted with iozone.  XFS appears to be most
> consistent performer for this workload, followed by
> ext2 and finally ext3.  Has this been observed
> elsewhere?  If so, is it possible to tune ext3 to
> perform better on this workload?

yes you should use the reservations patch from the -mm tree;
see http://people.redhat.com/arjanv/reservations.png for a graph of the difference 

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