[CentOS] Benchmark Disk IO

[Matt Keating]

2010/5/6 Matt Keating <keatster at gmail.com>:
> Thanks for all the updates. Will look into iozone and the advice given
> about the rest.

Either I'm doing/reading something wrong or a 1TB SATA 7200 RPM drive
is faster than 4x300GB SCSI 10K RPM drives in raid 10.
Both of the results below were from iozone, running the following command:
$ iozone -R -l 5 -u 5 -r 4k -s 100m -F /tmp/F1 /tmp/F2 /tmp/F3 /tmp/F4 /tmp/F5

SATA:
"Throughput report Y-axis is type of test X-axis is number of processes"
"Record size = 4 Kbytes "
"Output is in Kbytes/sec"

"  Initial write "  564135.95
"        Rewrite " 2021499.52
"           Read " 5937227.44
"        Re-read " 5898310.02
"   Reverse Read " 5652286.96
"    Stride read " 5556376.58
"    Random read " 5505582.00
" Mixed workload " 3570796.92
"   Random write " 1913500.58
"         Pwrite "  580229.98
"          Pread " 5310776.62


RAID:
"Throughput report Y-axis is type of test X-axis is number of processes"
"Record size = 4 Kbytes "
"Output is in Kbytes/sec"

"  Initial write "  253099.59
"        Rewrite "  915449.39
"           Read " 1911688.05
"        Re-read " 1906603.72
"   Reverse Read " 1847584.97
"    Stride read " 1772254.31
"    Random read " 1550438.36
" Mixed workload " 1276847.84
"   Random write "  930307.99
"         Pwrite "  206193.02
"          Pread " 2631370.07

Am I doing something wrong? Please advise.

Thanks,
Matt