[CentOS] Linux tool to check random I/O performance

Wed Sep 4 19:44:35 UTC 2013
mcclnx mcc <mcclnx at yahoo.com.tw>

we just purchase new I/O card and like to check I/O performance.

for sequence I/O performance test we can use "hdparm -t /dev/xxx"

bur for random I/O performance test which Linux command I can use?

** our environment does NOT allow install third party software..

Thanks