Re: FIO achieves only 50:50 of read:write IOPS when rwmix is not 50:50 and achieves only about 40% of total IOPS

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On 6 April 2017 at 22:13, GV Govindasamy <gv.govindasamy@xxxxxxxxxxx> wrote:
> Thanks Sitsofe. After removing “rate_process=poisson” and giving “rate=<in-bytes>”, I can see the IOPS I have calculated for. In this case, 90 read ops and 10 write ops.
>
> “rate_process=poisson” is a bug in this case then?

I'd say so because I'd have expected each I/O direction to have
poisson applied to it independently of other I/O directions IF it has
a differing submission rate to other I/O directions. Without doing
this I'm unsure how the rates achieved could be independent of each
other.

-- 
Sitsofe | http://sucs.org/~sits/
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