Part of my problem may have been how Proxmox/LXC scheduled the CPU - it seemed to be reserving some of the CPU for another container, despite that container not needing it. I built it on low wattage hardware (8-core atom C2758-based A1SRM-2758F) that struggled to transcode high-resolution video streams - 1080p streams transcoded at 17 fps, slower than realtime. Its primary roles are as a file system (ZFS storage array) and a media server using Emby, a mono-based (.net) Plex-alternative that I switched to a couple years ago and am very happy with.

I based it on Proxmox 4.4 (Debian Jessie 8.6) so that I could use virtualization or its built-in lxc-based container system to segregate the various roles this server will have. When I built my home server I planned it to be a multi-purpose machine. Skip down to the Guide for the how-to guide to get Nvidia GPU Encoding working in a Linux Container (LXC). In this first section I just provide background and some extra details. It was prickly enough that I decided to post about it - in case I ever need to do this again and have forgotten how, or that this ranks high enough in search results to help someone else who’s struggling. I put off the problem, which I knew would take some work, until this week while I had the house to myself and no school or work to attend to. This project has been on my home media server to-do list since I rebuilt my media server this summer. With some help from this post, this guide has been updated to address that. I found this guide wasn’t working properly because it wasn’t ensuring that /dev/nvidia-uvm was present and passed through to the container. Update April 2019 I bought a new GPU for my server, a P400 which is capable of transcoding H265 encoded video.

Cuda ffmpeg linux