Audio Group RT Priority

[SubhadeepJasu]

Problem

Certain realtime audio applications that run from flatpaks require realtime (pro) audio processing. Apps that use pulseaudio may run into issues with the scheduling system causing glitchy audio in those applications. This issue is made worse by the fact that pulseaudio apps by default can't claim high realtime priority.

Proposal

Set the default rt prio to 90.

Prior Art

I do it by modifying the file /etc/security/limits.conf to include:

@audio   -  rtprio      90
@audio   -  memlock     unlimited

[danirabbit]

Is this still relevant now that we ship Pipewire?

[SubhadeepJasu]

I'll need to test this. I remember fluidsynth complaining about realtime when I had pipewire in OS7.1 as well