PE2650 / PowerVault 220S Performance issue

Mark Watts m.watts at eris.qinetiq.com
Fri May 14 03:49:00 CDT 2004


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> Not very special scores, you might be interested in adjusting the
> read-ahead settings under linux, see /proc and/or search the archives.
> You should be able to go past the 200MB/sec easily with this config.
>
> I can do 150MB/sec with a 6 disk raid 10, your raid 5 should double
> that. You might get even further doing some channel splitting and a
> Perc4/DC (if you have a free slot).
>
> Use the megaraid32 driver instead of the megaraid driver if you are not
> already using that one.
>
> Cheers

This machine was bought for storage, not performance, so we're not too fussed 
with the speed although I may have a look at the readahead stuff when I get 
time.
Looks like we're using the megaraid driver though...

Mark.

- -- 
Mark Watts
Senior Systems Engineer
QinetiQ Trusted Information Management
Trusted Solutions and Services group
GPG Public Key ID: 455420ED

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