[Linux-cluster] gfs performance
Jure Pečar
pegasus at nerv.eu.org
Mon Jan 30 14:46:27 UTC 2006
On Mon, 30 Jan 2006 07:12:51 -0600
Eric Anderson <anderson at centtech.com> wrote:
> I'm not sure what kind of disk backend you have, but you are probably
> thrashing the heads on the disks, making the disks do a lot of seeks,
> burning your performance. I don't think this is a GFS performance issue
> really. You could try a memory backed disk with GFS on it, and see if
> the performance falls at all.
>
I wrote that down under comments:
"Shared storage is IBM DS4100, configured with two raid5 volumes of 7 disks each"
It's true that DS4100 is no high performer, but I'd say all that write cache should make a difference with seeks?
Also, does anyone have any numbers to compare?
--
Jure Pečar
http://jure.pecar.org
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