On Wed, 30 Dec 2015 15:01:56 +0100, Maarten de Vries wrote: >Lack of compositing has nothing to do with rendering on CPU or GPU. >Applications can still get an opengl context and render things. >Compositing simply means that the applications wont be rendering to a >directly visible buffer but to a buffer that is used by the >compositor. That way it can add effects and eye candy. If anything, >lack of compositing will increase performance by cutting out the >middleman and having applications render directly to a visible buffer. This explains why without compositing performance doesn't slow down and that it could have a positive effect and not a negative one. Compositing might cause xruns for audio signals or at least might increase MIDI jitter. At best it doesn't affect audio and/or MIDI, but if it affects audio and/or MIDI, then it would make it work worse. Each additional interrupt could cause issues. If audio or MIDI signals are delayed by a fixed time, that isn't too long, it's possible to adjust this without causing an issue. If timing too much fluctuates randomly, this could cause serious trouble. I suspect that CNC machines are more prone to jitter, than MIDI is.
