Is my Jellyfin using Intel QS as expected?
reddit / selfhosted

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ASouthernBoy · 2023-12-27 16:08

I have Jellyfin installed in Proxmox LXC (not in a docker), igpu is
passed to lxc as instructed .

CPU is   i5-1135G7  with 11th gen igpu and as far as i understand
should be transcoding easlily a couple of streams.

Now my end devices typically use direct stream as they are capable but
sometimes on mobile phones i have Jellyfin transcode , when this
happens LXC CPU (2 cores assigned) spike around 30-40% and igpu to
100%

So my dillema is , is this normal shouldn't cpu/gpu be much lower if
this gpu is to handle a couple of transcodes. Videos in question are
always 1080p 265 10bit (HVECS)

​

Here's screenshot of CPU utilization - CPU

https://preview.redd.it/sm49nfks2v8c1.png?width=1002&format=png&auto=w
ebp&s=1f10f29972052b08b9ee5ac9c5f143212d0538dc

and IGPU

https://preview.redd.it/g1pg839t2v8c1.png?width=1140&format=png&auto=w
ebp&s=b9137277cb4a17cd23fea42f92464c00225ec623

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ex800 · 2023-12-27 16:25

Unless you have "Throttle Transcodes" enabled, it will go full steam
ahead for the transcode buffer, take a look at transcoding framerate
under playback info.

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ASouthernBoy · 2023-12-27 16:43

around 330fps, but shouldn't CPU be idling, i thought iGPU 100% , cpu
like 5% or something and that was the point of quicksync transcoding
right?

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ex800 · 2023-12-27 16:53

Yes, I'd expect the CPU to be lower, however what is on the rest of
the command line? Is Jellyfin also doing something else that is not
hardware accelerated?

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ASouthernBoy · 2023-12-27 16:59

nope that one process, the first one, is using 60% cpu for transcoding

[cpu](https://imgur.com/a/D9sPp8c)

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ex800 · 2023-12-27 17:17

so having had a check, I see something similar with a Quadro card,
maybe ask of the jellyfin [forum](https://forum.jellyfin.org/)?

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nyanmisaka · 2023-12-27 19:28

Audio transcoding is handled by the CPU.

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ASouthernBoy · 2023-12-27 20:09

that makes sense, thanks

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ex800 · 2023-12-28 09:16

TIL, ty!