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

["Toke Høiland-Jørgensen" <notifications@github.com>]

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Pete Heist <notifications@github.com> writes:

>> > 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.

Well the obvious one is that the netperf measurement uses more bandwidth
as the latency decreases. Have been meaning to add that to the Flent
bandwidth graphs, but now I'm not sure I'll even bother :P

Also, the netperf measurement will stop at the first packet loss (later
versions added in a timeout parameter that will restart it, but even
with that we often see UDP latency graphs completely stopping after a
few seconds of the RRUL test).

-Toke


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