Bonie++ is a disk benchmark tool.

[root@penguin1 data]# bonnie++ -d /data/ -s 512g -m penguin1 -b -f -u leo
Using uid:2479, gid:1059.
Writing intelligently...done
Rewriting...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version  1.96       ------Sequential Output------ --Sequential Input- --Random-
Concurrency   1     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
penguin1       512G           63198  15 29294   5           85059   6  30.2  20
Latency                          163s    2021ms               718ms    1119ms
Version  1.96       ------Sequential Create------ --------Random Create--------
penguin1            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   246   3 +++++ +++   439   1   330   4 +++++ +++   428   1
Latency              2184ms     460us     917ms     720ms       7us    1149ms
1.96,1.96,penguin1,1,1369861005,512G,,,,63198,15,29294,5,,,85059,6,30.2,20,16,,,,,246,3,+++++,+++,439,1,330,4,+++++,+++,428,1,,163s,2021ms,,718ms,1119ms,2184ms,460us,917ms,720ms,7us,1149ms