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Need to benchmark IOPS reliably



Can someone recommend a linux utility to reliably benchmark IOPS on local, NFS and iSCSI volumes?

I need something that can handle large data sets (definitely over 32G, ideally even larger) and 10G ethernet bandwidth.

I've tried Bonnie++ (measures bandwidth but not IOPS), iorate (can't seem to work with datasets larger than 4G, can't seem to saturate a 1G ethernet), and fio doesn't seem to provide reliable results (I'll run the same test twice with completely different results).

Thanks for your input.

Tags (2)

Path Finder

Use fio (flexible I/O) which is more meaningful and easy to use.

0 Karma

Splunk Employee
Splunk Employee

iozone is pretty good, but it does take a lot of fooling around with the options, and the output does take a bit of knowledge to interpret.

0 Karma
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