From: Matt Keating <keatster at gmail.com> >> 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. > Will give that a try - 16gb file incoming Or maybe do a: sync; echo 3 > /proc/sys/vm/drop_caches between the 2 tests...? JD