On 05/19/2010 02:44 AM, Matt Keating wrote: > 2010/5/6 Matt Keating<keatster at gmail.com>: > >> Thanks for all the updates. Will look into iozone and the advice given >> about the rest. >> > Either I'm doing/reading something wrong or a 1TB SATA 7200 RPM drive > is faster than 4x300GB SCSI 10K RPM drives in raid 10. > Both of the results below were from iozone, running the following command: > $ iozone -R -l 5 -u 5 -r 4k -s 100m -F /tmp/F1 /tmp/F2 /tmp/F3 /tmp/F4 /tmp/F5 > > [...] > Am I doing something wrong? Please advise. > I don't usually use iozone (I usually use bonnie++) so take this with a grain of salt, but those speed look suspiciously like cache speeds. Bump the size (-s parameter) up to twice your real RAM size. -- Benjamin Franz