Re: [Cerowrt-devel] [Bloat] Ubiquiti Launches a Speed Test Network

["Toke Høiland-Jørgensen" <toke@toke.dk>]

Mikael Abrahamsson <swmike@swm.pp.se> writes:

> On Wed, 4 Sep 2019, Matt Taggart wrote:
>
>> So an interesting idea but they have some things they could improve.
>
> I've been considering what one should run in parallel with the speed test 
> to get an impression if the speedtest impacts performance of other flows / 
> realtime flows, similar to what dslreports speedtest does.
>
> I've considered running one or several simulated voip calls (50pps) and 
> record RTT, PDV, packet loss etc for this session.
>
> It would be interesting to hear any suggestions people have for a fairly 
> simple codebase that does this that can be included in these kinds of test 
> clients (both server and client end, and of course one that protects 
> against reflection attacks etc).
>
> iperf3 can be used for this, but from what I can see the iperf3 server 
> code isn't very friendly to multiple parallel tests or even resilient 
> against hung clients that doesn't close the test nicely.
>
> I also considered using WebRTC or VoIP libraries, does anyone know what 
> RTT/PDV/packet loss data can be extracted from some common ones?

Pete coded up this wonderful tool for UDP-based latency testing; it's
even supported in Flent, and available on some (all?) the public-facing
servers:

https://github.com/heistp/irtt

-Toke