Comment 26 for bug 107545

Thanks, Oliver. I tried this and the performance was the same running burnP6 and running it with a nice level of -1. Strangely, with up_threshold set to 40, there was never a drop in performance: as soon as I changed it back to 95, the drop in fps was immediate. Running glxgears actually increased fps in CoD4!

Then I discovered that once performance gets reduced to this level, turning off compiz restores it (normally it makes no difference). Turning compiz back on had some strange effects - after I closed CoD4, video performance dropped dramatically - I could see the screen redrawing pixel line by pixel line. Changing to a console (ctrl-alt-f1) and back fixed it. So it must be a compiz problem, not a scheduling problem.