On Mon, 30 Jan 2006 07:12:51 -0600 Eric Anderson <anderson@xxxxxxxxxxxx> 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 -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
