Iozone
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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