On Mon, 11 Jun 2007, Justin Piszcz wrote: > > > On Mon, 11 Jun 2007, Dexter Filmore wrote: > > > On Monday 11 June 2007 14:47:50 Justin Piszcz wrote: > > > On Mon, 11 Jun 2007, Dexter Filmore wrote: > > > > I recently upgraded my file server, yet I'm still unsatisfied with the > > > > write speed. > > > > Machine now is a Athlon64 3400+ (Socket 754) equipped with 1GB of RAM. > > > > The four RAID disks are attached to the board's onbaord sATA controller > > > > (Sil3114 attached via PCI) > > > > Kernel is 2.6.21.1, custom on Slackware 11.0. > > > > RAID is on four Samsung SpinPoint disks, has LVM, 3 volumes atop of each > > > > XFS. > > > > > > > > The machine does some other work, too, but still I would have suspected > > > > to get into the 20-30MB/s area. Too much asked for? > > > > > > > > Dex > > > > > > What do you get without LVM? > > > > Hard to tell: the PV hogs all of the disk space, can't really do non-LVM > > tests. > > You can do a read test. > > 10gb read test: > > dd if=/dev/md0 bs=1M count=10240 of=/dev/null eek! Make sure to use iflag=direct with that otherwise you'll get cached reads and that will throw the numbers off considerably. -- Jon Nelson <jnelson-linux-raid@xxxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
