Fastest disk in the west or bad iozone numbers?

[Dan Nelson]

In the last episode (Aug 03), Nikolas Britton said:
> Anyone have a clue why iozone reports disk read rates of 688
> MegaBytes/s on a 1GB test file? Am I doing something stupid, like not
> converting the numbers correctly?

You want to test using a file at least twice as big as your RAM,
otherwise you're just testing your cache.  You can see an example of
this on the first graph at http://www.iozone.org .  Only the far right
edge shows the disks speed.  web.archive.org shows that same image
existed back in 2000 with a modtime of 1999, so it's possible the
machine being tested had under 256MB of RAM.

-- 
	Dan Nelson
	dnelson at allantgroup.com