XRUNS - Compositor - Mysterious Things
Posted: Sun Mar 10, 2019 3:27 pm
Edit: Problem seems to be RENOISE related. With Reaper I don't observe it! Maybe someone can try to reproduce?
Hi,
I fear I need some help again. I'm using the debian stock kernel (4.9.0-8-amd64) at the moment and today I found a really strange issue:
When I disable the compositing in XFCE or don't use Compton (using both at the same time is not possible) as the compositor I very quickly get xruns and the DSP load is driving roller coaster. When I enable Compton or the XFCE own compositor everything goes back to normal. Strange thing is that I never stumbled upon that issue. Also I would think that using a compositor will make xruns more likely in any case, but actually this is not what I observe.
It also happens with kernel 4.9.0-7-amd64.
I made a little video:
While it's playing with Compton until ~ 0:30 the Renoise DSP load is ~16%.
Then after killing compton it's increasing to 25% and running the xrun counter script give the first xruns at ~64% or lower....
At 1:55 I started compton again and DSP load goes down again. When starting the xrun counter script I get the first xrun at > 90% (not shown).
https://vimeo.com/322604219
with the RT kernel I don't see any DSP load difference between Compton running or not, but when running the xrun script I get much earlier xruns when compton is not running. Also the xorg process is reaching >80% CPU when compton is not running.
Hi,
I fear I need some help again. I'm using the debian stock kernel (4.9.0-8-amd64) at the moment and today I found a really strange issue:
When I disable the compositing in XFCE or don't use Compton (using both at the same time is not possible) as the compositor I very quickly get xruns and the DSP load is driving roller coaster. When I enable Compton or the XFCE own compositor everything goes back to normal. Strange thing is that I never stumbled upon that issue. Also I would think that using a compositor will make xruns more likely in any case, but actually this is not what I observe.
It also happens with kernel 4.9.0-7-amd64.
I made a little video:
While it's playing with Compton until ~ 0:30 the Renoise DSP load is ~16%.
Then after killing compton it's increasing to 25% and running the xrun counter script give the first xruns at ~64% or lower....
At 1:55 I started compton again and DSP load goes down again. When starting the xrun counter script I get the first xrun at > 90% (not shown).
https://vimeo.com/322604219
with the RT kernel I don't see any DSP load difference between Compton running or not, but when running the xrun script I get much earlier xruns when compton is not running. Also the xorg process is reaching >80% CPU when compton is not running.