raid stripe size vs performance
Pasi Kärkkäinen
pasik at iki.fi
Thu Aug 20 20:49:55 UTC 2009
On Thu, Aug 20, 2009 at 01:43:27PM -0700, Phill wrote:
> I'm rebuilding a RHEL 5 server used primarily for building code.
> It has perc 6i controller and I'm installing 6 15K sas drives.
> The plan is to setup a raid 10 configuration for improved performance.
> Does anyone know if I can significantly increase or degrade my performance
> by selecting a larger stripe size? The default is 64k and I have read in a
> performance report that a 512k size may be more desirable for Linux systems.
> Thanks for any replies.
Well.. if you do large sequential reads/writes then big stripe size will
help, but if you do small random-io then large stripe size like that will be
really bad.
It really depends on your workload.
-- Pasi
More information about the users
mailing list