[Flent-users] [tohojo/flent] packet loss stats (#106)

Toke Høiland-Jørgensen notifications at github.com
Tue Nov 21 23:56:37 EET 2017


Pete Heist <notifications at github.com> writes:

> Trying to confirm how latency was being calculated before with the
> UDP_RR test. Looking at its raw output, I see that transactions per
> second is probably used to calculate RTT, with interim results like:
>
> ```
> NETPERF_INTERIM_RESULT[0]=3033.41
> NETPERF_UNITS[0]=Trans/s
> NETPERF_INTERVAL[0]=0.200
> NETPERF_ENDING[0]=1511296777.475
> ```
>
> So RTT = (1 / 3033.41) ~= 330us
>
> And this likely takes the mean value of all transactions and
> summarizes it at the end of the interval, then the calculated latency
> was what was plotted in flent?

Yup, that's exactly it :)


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