I’ve been trying to upgrade from 10.10 to 10.11 for a while now, as the Android TV app keeps nagging me, and every attempt ended with impossibly long library scan times.
After some thorough investigation, it appeared that a Home Videos type collection causes unending scan (yet to be solved), but also that Jellyfin does a lot of writes to the config directory (either database or metadata or both). Mine’s on spinning media part of a ZFS pool. I tried a few performance tuning options, such as testing the config dir with recordsize (similar to block size) of 4K, 8K, 64K, 128K and library scans fell from 30-40 minutes down to 8-13min with 4K-64K. The ZFS tuning wiki suggest 64K recordsize with LZ4 compression for SQLite workloads such as Jellyfin. That seems to work as well as 4K and 8K but likely is faster when reading thumbnails and such.
Note that upgrading to 12-rc3, which is supposed to speed up library scans did not improve scan times for me. Optimizing config/database write speed did. I cross-checked the culprit by experimenting with moving the config dir to NVMe and RAM. Both of those got the scan times down to 8-9 minutes compared to the optimized spinning media’s 12-13.
So if you had upgraded (or about to) to 10.11 your library scans are (about to get) dog slow and your Jellyfin’s config dir resides on spinning media, optimize its write performance for SQLite.
Feeling adventurous is exactly what you need if you decide to expose Jellyfin to the Internet (a reverse proxy adds nothing to security)
Jellyfin doesn’t open up your network unless you specifically allow remote access exactly like Plex. The only difference is Jellyfin doesn’t have the encrypted tunnel built in- you need to know it needs it and add it yourself.
Plex has had bugs that allowed remote access into your home’s Plex server. https://nvd.nist.gov/vuln/detail/CVE-2025-34158
That poster specifically said if you open jellyfin up to the internet ……
Which Plex does by default. He doesn’t understand that running Plex at home opens itself up to the Internet. I specifically referenced a CVE that let hackers into your home if you ran Plex.
His claim that securing Jellyfin with an encrypted tunnel does nothing is false.
Reading comprehension and Jellyfin stanning don’t go well together
He said an encrypted tunnel does nothing. I don’t even run Jellyfin but that statement is false.