Jellyfin eats all ram

[TheDreadPirate]

Iy can confirm that it's a problem since 10.9.7.
My library/schedules barely changed and when the daily schedule launches my library tasks from 00:00 to 06:00AM the docker PIDs change from 24ish to 1300ish in a short timespan ( ~ 30 to 60 minutes ) and accumulate at least 5 times the normal amount of RAM compared to 10.9.6.
My normal RAM usage is 2 to 4 GB in 10.9.6 → full 16GB Ram and 100% cpu usage of the system until it "crashes" the system after 10.9.7. 
Manual launched tasks usually only takes 1 to 3 minutes except themerr which takes 10 minutes to finish.

Hardware:
8 cores of Intel 14900K
16GB RAM
Official docker image


Picture:



Phase 1: 00:00 to 02:00: trickplay, intro/outro detection, scan new boxsets → almost no hardware load
Phase 2: 02:00 to 04:00: extract chapter pictures, download missing subtitles, extract subtitles, playback backup → higher cpu utilisation, constant memory increase 
Phase 3: 04:00 to 11:00: library scan, all maintenance tasks → cpu overload, still constant memory increase untill all available memory is used. I had to restart the machine to solve the problem.

Logs: 
Jellyfin logs - 6.8.24 - Pastebin.com

Have you tried the solution I suggested above?

A lot of ffmpeg and ffprobe processes will spawn during a large library scan.  Go to Dashboard > General and at the bottom of that panel will be two settings to limit the number of processes a library scan will spawn.  Try setting that to 4 or 8 for each.