Strange periodic jitter

This graph shows jitter over time of audio producer in mediasoup server.

I found out there is some strange periodic jitter.

long term period is 30 mins and small term period is 15s.

The intervals are very constant.

Anyone has an ideas?

No idea, we don’t run anything every 30 mins or 15 seconds. This could be just related to how the client sends RTP to mediasoup.