Just for kicks!
[root@athy tiobench-0.3.2]# ./tiobench.pl
No size specified, using 512 MB
Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/sec
File Block Num Seq Read Rand Read Seq Write Rand Write
Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%)
------- ------ ------- --- ----------- ----------- ----------- -----------
. 512 4096 1 38.60 20.2% 0.844 0.97% 32.85 34.4% 1.090 0.90%
. 512 4096 2 26.20 16.6% 0.973 1.05% 28.52 47.5% 1.099 0.98%
. 512 4096 4 22.98 15.6% 1.070 1.07% 24.53 45.0% 1.098 1.26%
. 512 4096 8 21.52 15.9% 1.168 1.06% 20.27 39.1% 1.097 1.52%
[root@athy /]# bonnie -s 512
File './Bonnie.19851', size: 536870912, volumes: 1
Writing with putc()... done: 13038 kB/s 99.8 %CPU
Rewriting... done: 15274 kB/s 12.9 %CPU
Writing intelligently...done: 44931 kB/s 43.8 %CPU
Reading with getc()... done: 12038 kB/s 95.0 %CPU
Reading intelligently...done: 66362 kB/s 32.5 %CPU
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek-
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)-
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1* 512 13038 99.8 44931 43.8 15274 12.9 12038 95.0 66362 32.5 305.7 4.1
[root@athy /]# bonnie -s 1024
File './Bonnie.19858', size: 1073741824, volumes: 1
Writing with putc()... done: 13023 kB/s 100.0 %CPU
Rewriting... done: 15114 kB/s 13.9 %CPU
Writing intelligently...done: 39051 kB/s 40.2 %CPU
Reading with getc()... done: 12158 kB/s 96.3 %CPU
Reading intelligently...done: 53235 kB/s 28.3 %CPU
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek-
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)-
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1*1024 13023 100.0 39051 40.2 15114 13.9 12158 96.3 53235 28.3 210.7 2.1
Cheers,
Andre Hedrick
LAD Storage Consulting Group