I'm slightly disappointed that this isn't about open source amphetamine.
Does anyone know about a speedtest that's like iperf but multicore and suited for >100GbE? I've seen Patrick from STH use something that could do like 400GbE but I haven't found out what it's called
I prefer to use the ookla sppedtest CLI version. No bs but also better server coverage
Also the ISP probably knows most of the servers speedtest owns and accelerate speeds for them along with other popular speed test websites, while throttling other regular connections.
As somebody who once worked at an ISP: they absolutely do that, and it isn't illegal. In fact, ISP's host many of Ookla's speedtest servers. The less infrastructure your test needs to go through, the better the results will be—there's nothing faster than a network that's communicating with itself.
Cool project! I used OpenSpeedTest last week to test local intranet speeds.
If you already have docker/podman installed, the command below should get you going quickly:
docker run --restart=unless-stopped --name openspeedtest -d -p 3000:3000 -p 3001:3001 openspeedtest/latest