I’m running Ardour 4.2 on Ubuntu GNOME 15.04 64-bit. My processor is a 6-core AMD FX-6300 and my system has 8 GB of RAM and a solid state drive.
That’s a reasonably powerful system for audio production, right? But for some reason I’m still getting occasional Xruns. They are pretty rare; maybe once every 5-6 minutes, sometimes even 10-15 minutes. If I only have Ardour and Hydrogen open, it’s usually 10 minutes or so before I get an Xrun, but I still get them. They don’t seem to occur with any regularity.
I really don’t understand why, since people with low-power laptops and rigs from 6 years ago seem to be able to run their systems at extremely low latencies (5 ms and under) without getting Xruns unless they’re under a very heavy load? My system temps are all pretty low. My CPU isn’t being pushed past 16% when I’m running JACK, “DSP” in Ardour isn’t breaking 17% and yet every once in a while I’ll see reports of Xruns in the JACK messages window.
I’m running JACK 2 through a Focusrite ScarlettSolo USB interface. My settings are as follows:
Realtime, Force 16-bit, 128 Frames/Period, 3 Periods/Buffer, 44100/48000 (I use both depending on source audio but notice no difference in performance.)
The system has been configured by the Ardour installer to allow realtime audio, CPU governor is set to performance and I’m using the lowlatency kernel with SMP, PREEMPT and 1000Hz available in Ubuntu’s repositories.
So my question is: is it possible to fully eliminate Xruns, or is this just a pipe dream?