Parsing FIO output

Hello!

I'm in the process of benchmarking a cloud, and have written scripts that capture FIO output from X runs (using the --minimal option).

I run 4 different tests, for seq read/write and random read/write. I've found that the write output is in field $25 and the read output is in $6, but I'm struggling with min, max and stddev of the latency (clat). Also, I've read that it changes from usec to msec where it's convenient. Any tips as to getting out the values in msec always?

Thanks

The format is actually described. See the HOWTO included with fio, section 7.0, terse output. The minimal format output _always_ includes latencies in both msec and usec ranges. So if you just want the msec ranges, you only look at those fields.

But I'd recommend looking at the HOWTO. The actual output is from stat.c:show_thread_status_terse_v3(), so you can verify by looking at the actual output code as well.

Jens Axboe