sethius wrote:Hey Giancarlo, Ableton Live 9.1.8 64bit crashed yesterday when I was using Versatile 64bit AU. My system is OSX 10.9.5 and my Mac is a 2013 3.5 GHz 6-Core Intel Xeon E5 Mac Pro (Black Trash Can). I have 16GB of RAM.
I'm 99% sure Versatile caused the crash as the document was pretty basic and i've never seen this kind of crash before (and my system is extremely stable and almost never crashes). The audio engine just stopped working and the play button wouldn't work, but the program continued to function to some degree. I then tried to save and then Ableton Live hung and stopped responding.
Also the CPU spikes are ridiculous. I have one of the fastest and most modern machines available and with only 1 instance of Versatile the audio crackled every time I moved a knob and continued for a short period after.
about the spikes: try mixratecycles to zero
It seems like on au the spikes are a lot more than planned:
- cpu load should be a lot less than Core5 architecture
- but during knob tuning it should be a bit more than Core5 for a short period of time.
I explain what happens: when you move a control the prog rate switches to MIXRATE and lasts for MIXRATECYCLES. So in your case you can increase MIXRATE (for example 100000) and decrease cycles. This is a temporary solution, the best one is disabling it at all (you can remove both MIXRATE and MIXRATECYCLES tags or set MIXRATECYCLES to zero).
We implemented MIXRATE in order to improve responsiveness of Core6 and it seems on many systems it works pretty well, but we received 3-4 complains here and all of the are linked to AU, so we'll investigate further.
On logic validation we'll check it further, apparently it is the only plugin which does not validate now
About the crash we don't have a clue, but it is possible that high cpu load while moving parameters could affect overall stability, here my suggestion
Open also a ticket, so we can collect details about various issues and work on them!