http://www.iozone.org/
[root@monitor bin]# ./iozone -a -s 512m -f /usr/test -y  -q  -Rb /root.out -i  -i  -i

        Iozone: Performance Test of File I/O

                Version $Revision: 3.434 $

                Compiled for  bit mode.

                Build: linux 

        Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins

                     Al Slater, Scott Rhine, Mike Wisner, Ken Goss

                     Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,

                     Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,

                     Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,

                     Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,

                     Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer,

                     Vangel Bojaxhi, Ben England, Vikentsi Lapa,

                     Alexey Skidanov.

        Run began: Fri Jun  :: 

        Auto Mode

        File size set to  kB

        Using Minimum Record Size  kB

        Using Maximum Record Size  kB

        Excel chart generation enabled

        Command line used: ./iozone -a -s 512m -f /usr/test -y  -q  -Rb /root.out -i  -i  -i

        Output is in kBytes/sec

        Time Resolution = 0.000001 seconds.

        Processor cache size set to  kBytes.

        Processor cache line size set to  bytes.

        File stride size set to  * record size.

                                                              random    random     bkwd    record    stride

              kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread

iozone test complete.

Excel output is below:

"Writer report"

        ""  ""  ""  ""  ""  ""

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"Re-writer report"

        ""  ""  ""  ""  ""  ""

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"Reader report"

        ""  ""  ""  ""  ""  ""

""              

"Re-Reader report"

        ""  ""  ""  ""  ""  ""

""              

"Random read report"

        ""  ""  ""  ""  ""  ""

""              

"Random write report"

        ""  ""  ""  ""  ""  ""

""