On Tue Oct 4 11:57:27 EDT 2011, 9f...@hamnavoe.com wrote: > > i think the attached program ought to work. > > Doing i/o to random blocks, aren't you mostly measuring seek time?
the drive will write-combine sequential io, so that's not an option. i've definately seen artifacts when doing completely random io on 4k drives. you can try rewriting it to step by 8k and retry the test. - erik
