http://bugs.winehq.org/show_bug.cgi?id=10939
Summary: Mackie Tracktion gui is very cpu hungry Product: Wine Version: unspecified Platform: PC OS/Version: Linux Status: UNCONFIRMED Severity: major Priority: P2 Component: wine-gui AssignedTo: wine-bugs@winehq.org ReportedBy: ireneshusband@gmail.com
The audio output of Mackie Tracktion is extremely choppy when (and only when) the GUI is visible. The choppiness is much worse at lower latencies (using jack/wineasio), so I presume that this means the cpu is under very heavy load.
To reproduce this:
Go to http://www.mackie.com/products/tracktion3/index.html and download and install the demo. You'll also need to have wineasio for this.
Start Jack and then Tracktion. Play the demo track "Spiralling".
What you will probably hear will be very choppy indeed. You will probably also see a huge number of xruns.
Now switch from X to a virtual console (ctrl-alt-F1). The choppiness disappears. On my machine (a 2.8GHz P4) when I run top from a virtual console I find that Tracktion uses between 45% and 70% cpu time while playing "Spiralling" at 10ms latency. However when the gui is visible it stutters badly even with a project containing nothing but a single wav file or a single undemanding vsti plugin.
I have experienced this problem both on an Ubuntu Gutsy system and a on recently installed Gentoo system.