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

mcclnx mcc wrote:
> 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..
>
What do you mean by "third party software"? There *is* a package in the
epel repository named stress that will, I think, do what you want.

      mark