Hello,
I usually wouldn't bother people with my issues but I'm sorta desperate
here. This is about
https://meet.wmcloud.org. WM Cloud jitsi instance. It's
on a bigram VM and on docker
<https://jitsi.github.io/handbook/docs/devops-guide/devops-guide-docker>.
Users report that when using this "a session with three people today and it
was rather poor. Bad grainy video from my side even though I have 100 Mbps
both ways. After about 15 minutes the session froze and the other two
dropped out." or "we were 4 persons and it was very unstable (no screen
sharing). people's connection got lost, so they could often still hear but
could not participate in the call anymore." and you can reproduce the issue
too if you stay long enough in a meeting with another connection (your
phone for example).
I can't find any reason why this is happening. I wrote some of my
investigations here <https://phabricator.wikimedia.org/T268393> but we
checked the cloud's infra. CPU, memory, etc. all look fine as well as the
network throughput. It doesn't happen with a new VM but quickly (after one
meeting) builds up to have the same issues again. I added a regular restart
of the docker containers (it even destroys them and recreates them again,
also the docker service itself gets restarted) but nothing changes (maybe I
should add a restart of the network manager too?). I assume the iptables
being busy because of docker can contribute to the issue but not this much.
I'm running out of ideas. If anyone has worked with such setup and feels
comfortable debugging this, let me know and I give permission to check the
VM.
Thank you
--
Amir (he/him)