Iozone

The standard command I use is as follows:

iozone -s 1024m -r 32k -i 0 -i 1 -i 2 -+n -t 1

Western Digital

WDC WD1600JD-75H

64k Blocks

        Iozone: Performance Test of File I/O
                Version $Revision: 3.279 $
                Compiled for 32 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,
                     Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy,
                     Erik Habbinga, Kris Strecker, Walter Wong.

        Run began: Mon Apr  9 10:23:36 2007

        File size set to 1048576 KB
        Record Size 64 KB
        No retest option selected
        Command line used: iozone -s 1024m -r 64k -i 0 -i 1 -i 2 -+n -t 1
        Output is in Kbytes/sec
        Time Resolution = 0.000001 seconds.
        Processor cache size set to 1024 Kbytes.
        Processor cache line size set to 32 bytes.
        File stride size set to 17 * record size.
        Throughput test with 1 process
        Each process writes a 1048576 Kbyte file in 64 Kbyte records

        Children see throughput for  1 initial writers  =   49564.20 KB/sec
        Parent sees throughput for  1 initial writers   =   45431.54 KB/sec
        Min throughput per process                      =   49564.20 KB/sec
        Max throughput per process                      =   49564.20 KB/sec
        Avg throughput per process                      =   49564.20 KB/sec
        Min xfer                                        = 1048576.00 KB

        Children see throughput for  1 readers          =   59590.32 KB/sec
        Parent sees throughput for  1 readers           =   59577.54 KB/sec
        Min throughput per process                      =   59590.32 KB/sec
        Max throughput per process                      =   59590.32 KB/sec
        Avg throughput per process                      =   59590.32 KB/sec
        Min xfer                                        = 1048576.00 KB

        Children see throughput for 1 random readers    =    8309.17 KB/sec
        Parent sees throughput for 1 random readers     =    8309.16 KB/sec
        Min throughput per process                      =    8309.17 KB/sec
        Max throughput per process                      =    8309.17 KB/sec
        Avg throughput per process                      =    8309.17 KB/sec
        Min xfer                                        = 1048576.00 KB

        Children see throughput for 1 random writers    =   22801.88 KB/sec
        Parent sees throughput for 1 random writers     =   20238.00 KB/sec
        Min throughput per process                      =   22801.88 KB/sec
        Max throughput per process                      =   22801.88 KB/sec
        Avg throughput per process                      =   22801.88 KB/sec
        Min xfer                                        = 1048576.00 KB