[Flent-users] [tohojo/flent] packet loss stats (#106)
notifications at github.com
Wed Nov 22 00:40:32 EET 2017
> On Nov 21, 2017, at 10:56 PM, Toke Høiland-Jørgensen <notifications at github.com> wrote:
> 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=3033.41
> > NETPERF_UNITS=Trans/s
> > NETPERF_INTERVAL=0.200
> > NETPERF_ENDING=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 :)
Ok, it’ll be interesting for me to look at the differences between the two going forward. Naturally doing it the udp_rr way would probably result in a smoother line. The other impacts on the test might be fun to explore.
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