Any suggestions to get best disk I/O performance on PE 2850?
awilliam at mdah.state.ms.us
Wed May 3 22:04:10 CDT 2006
Everyone says that software raids are faster then hardware raids. have
you looked into that? What about JFS or reiserfs. I don't know if they
are any better or worse then xfs and ext3 speed wise, but you could do
some tests with dd.
Also how are you writing the files? Direct I/O or are they copied to
the server with samba or NFS? I'm assuming its direct I/O, but if you
needed faster network access you could get some Intel E1000 network
cards and use bonding.
Bill Hoover wrote:
> Does anyone have any suggestions as to how to get the best disk I/O
> performance on a PE 2850? I have a machine with dual 3.8GHz processors,
> 8 GiB of RAM, six 300GB disks, and the PERC4eDi controller. I'm running
> the 32 bit version of RHELU3, with the disks configured into a RAID-0
> We need performance in creating a few hundred 10GiB disk files.
> Tests of the current configuration take about 30 seconds to write a 1GiB
> Currently we are using ext3 for the filesystem. I know that using xfs
> will help some, although mainly in things like file deletions.
> Is there any way to split the disks across two channels? I've looked at
> the documentation, but don't see a way to do that.
> Does anyone have any suggestions?
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