SOLVED: Trancoding performance suddenly poor

[yellowjacket_ur]

The issue is still the same with either QSV or VAAPI, and when I look at my shares in Unraid, the transcoding folder is on my SDD cache.

[yellowjacket_ur]

Yes, I have the transcode folder set to be only on my SSD cache. I went ahead and reinstalled Jellyfin completely and I am still having the issue.

Is it possible that my GPU isn't correctly utilizing ffmpeg or something because it's transcoding performance is worse than my Z440 6-core Xeon?

[TheDreadPirate]

Hard to say. I don't know why it was working before, but I still think most of the issue is with the kernel bug present in the version unRAID beta 7 is using.

[yellowjacket_ur]

I'll give updating to a compatible kernel a try. Thanks.

[yellowjacket_ur]

UPDATE: I was able to fix the issue by first changing the Linux kernel to 6.6.7 using a guide that others used to get Arc GPUs working. That didn't work using the Unraid 7 beta, so I downgraded by Unraid version to 6.12.10 (which doesn't have an Arc-compatible kernel).

Now I'm able to transcode my movies at more than 80 fps (see screenshot from movie: Alien). I didn't do anything else apart from what I described and now it's working I certainly won't be touching it!

Thank you for the assistance and hopefully this can help someone in the future.

[TheDreadPirate]

You should report this to unRAID so that they don't release version 7 with the bugged Linux kernel. I've linked discussions about the issue and the related patches below.

https://github.com/jellyfin/jellyfin/issues/11380
https://gitlab.freedesktop.org/drm/i915/...sues/10895