this post was submitted on 25 Jan 2025
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16
Jellyfin Buffering Slow Torrents (lemmy.ml)
submitted 1 month ago by monty33@lemmy.ml to c/selfhosted@lemmy.world
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I have been having a few issues recently, and I can't quite figure out what is causing this. My setup:

  • gigabit WAN up and down. Run speed tests regularly and get 800+ mbps up and down.
  • opnsense router VM (proxmox) running on a lenovo m920x. Installed an intel 2x10gbe card.
  • Sodola 10gbe switch
  • TrueNAS server (bare metal) w/ 10gbe serving the media files over NFS, stored on a ZFS mirror.
  • Jellyfin LXC
  • debian LXC running the arr stack w/ qbittorrent
  • NVidia Shield w/ ethernet

First issue is extremely slow downloads on qbittorrent. Even if I download an ubuntu iso with hundreds of seeders will sit around 1 mibps. Media downloads with ~10 seeders, I'll sit around 200kibps. Running this through gluetun and protonvpn wireguard with port forwarding enabled and functioning.

Second issue I'm having is if I am downloading anything on qbittorrent, and attempt to play a 4k remux on Jellyfin, it is constantly buffering. If I stop all downloads, immediately the movie plays without issue. 1080 files play without issue all the time.

I tried spinning up a new LXC with qbittorrent, and can download ubuntu isos at 30+ mibps locally and not over NFS.

Any idea what could be causing this? Is this a read/write issue on my TrueNAS server? Networking issuing causing the NFS to be slow? I've run iperf to the TrueNAS and getting 9+gbps.

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[–] just_another_person@lemmy.world 8 points 1 month ago* (last edited 1 month ago) (15 children)

You need to remove a bunch of variables here to even start getting down to what may be the issue, but I'm guessing it's just the networking.

  • did you run speed tests over protonvpn and is this a paid plan?
  • have you tested what your Ubuntu download speed is without VPN or gluetun in the way?
  • have you looked at the peer and tracker info to see what's going on there?
  • have you tried another torrent client to rule out config issues with qbittorrent?
  • do you have QoS rules on your router?
  • what is the NFS server, and how are you mounting it?

From your title it's also hard to understand if you're trying to stream an unfinished torrent or not. If you're doing that over NFS, of course it's not going to work. You're introducing a waterfall effect of client read/write verification from the source down to the consumer where the contents of the source file are changing and need to be updated and verified all the way down the line.

[–] monty33@lemmy.ml 2 points 1 month ago* (last edited 1 month ago) (14 children)

Hey pal super helpful follow up questions! Here is where I am:

  • did you run speed tests over protonvpn and is this a paid plan?

Have not run speed tests, but yes it is a paid plan

  • have you tested what your Ubuntu download speed is without VPN or gluetun in the way?

Yes I have tried bypassing gluetun with qbittorrent, and no change to the download speed.

  • have you looked at the peer and tracker info to see what's going on there?

No I have not. What info could I gather here? Same file being downloaded in both qbittorrent instances I've tried.

  • have you tried another torrent client to rule out config issues with qbittorrent?

No but if you read my post, I did try a second instance of qbittorrent that does not use my NAS.

  • do you have QoS rules on your router?

None.

  • what is the NFS server, and how are you mounting it?

TrueNAS is serving the NFS, and the LXCs are mounting it via fstab entry.

From your title it's also hard to understand if you're trying to stream an unfinished torrent or not.

Sorry I was not clear. I am NOT trying to play media that is unfinished downloaded. I am trying to play files I already have, and they are impacted by other files being downloaded on qbittorrent.

edit: formatting

[–] charade_you_are@sh.itjust.works 4 points 4 weeks ago (1 children)

I've accidentally turned on speed limits in Qbit before

[–] monty33@lemmy.ml 1 points 4 weeks ago

confirmed all speed limits are off

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