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    Jellyfin Forum Support Troubleshooting Dropping frames/lag when using hardware acceleration

     
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    Dropping frames/lag when using hardware acceleration

    Using a GPU is unexpectedly worse than CPU
    ttsuam
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    #5
    2023-12-27, 12:17 AM (This post was last modified: 2023-12-27, 01:22 AM by ttsuam. Edited 2 times in total.)
    The server VM is allocated 20GB of memory of the 32GB total on the host. When transcoding, it uses almost all of the 20GB, but I assume that's to be expected and that 20GB is enough.

    Network-wise, it's fairly simple. I'm on the same LAN, just connecting based on IP with no DNS using an average off the shelf router. I can ping the VM with no problems. I'm not sure what I would be looking for if there was an issue here.

    The portion of the CPU allocated to the VM hardly breaks 20% use when transcoding using the GPU, so I don't think that's the issue.

    The only other thing I could think of is the hard drive throughput/access speed, but I'm not sure how I would test that. I have three Seagate Ironwolf st4000vn008-2dr166 and one Western Digital wdc_wd40ezrz-00gxcb0 in a ZFS pool on Proxmox.

    Edit: Looking at Proxmox, the IODelay is as high as 25% and averages about 10-15% while transcoding, which in looking at other forums, seems to point to drives that are too slow. Do that seem reasonable? From what I'm reading, it seems like upgrading the drive might be the solution, but I'd like to avoid that if possible, $$$.

    Edit2: It plays smoothly on the xbox, and the server IO delay is even lower, about 1-10%. That makes me think it's just the client struggling. But I'm not sure how that would change the IO delay
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    Messages In This Thread
    Dropping frames/lag when using hardware acceleration - by ttsuam - 2023-12-25, 09:31 PM
    RE: Dropping frames/lag when using hardware acceleration - by TheDreadPirate - 2023-12-25, 10:54 PM
    RE: Dropping frames/lag when using hardware acceleration - by ttsuam - 2023-12-26, 10:49 PM
    RE: Dropping frames/lag when using hardware acceleration - by TheDreadPirate - 2023-12-26, 11:15 PM
    RE: Dropping frames/lag when using hardware acceleration - by ttsuam - 2023-12-27, 12:17 AM
    RE: Dropping frames/lag when using hardware acceleration - by TheDreadPirate - 2023-12-27, 02:02 AM
    RE: Dropping frames/lag when using hardware acceleration - by ttsuam - 2023-12-28, 02:07 AM

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