SamKnows, latency test

So my Sam Knows whitebox probe has been running for a couple of days now. And here is the UDP latency graph. Notice something weird? It is bi-modal.

So why could this be? Every 2nd test is in a different band of latency? I did a 1 day capture of the UDP traffic from the probe. I haven’t looked yet, but, are there 2 servers? Is there a 2-port lag to it and one port is busier than the other? I also ran smokeping on a home machine to the same server they use, it reports as follows, so i guess there is some support for a range.

Hmmm… The average will be precisely where none of the packets lie 🙂