Please provide your feedback in this short Flings' survey.

Comment thread started by TristanK on HCIBench

Jul 06, 2021

Hi,

First of all, thanks for this fling, it's very useful and user friendly !

I used version 2.6.0 using easymode with FIO and looking at the graphs, I can see that each run as a duration of 1h30m.
If I understood well the FIO conf, we have 30 minutes of ramp up, and then 1h of benchmarch with logging. Looking at the FIO manual, it states that rampup_time is : "fio will run the specified workload for this amount of time before logging any performance numbers."

What I don't understand then is why latencies are increasing a lot when the rampup_time is over. If it's just logging of the performance numbers, it shouldn't have a huge impact on the bench ?

Thanks in advance for your input

Tristan

Jul 07, 2021

fio doesn't report the latency when doing the ramp up, it would only report that during the testing phase.