Yes, I've seen the same issue with nvidia for a long time (before 310). It is horribly slow if you have vsync enabled in the driver and compiz. I suspect the reason is this bug. Nvidia appears to push lots of graphics commands through the X event queue, which no other driver does. So nvidia's hyper-sensitive to X event traffic and can slow down easily. That's the theory.
Alistair: Please note that glxgears IS doing 4000 FPS when it says so. Just like any software benchmark it's telling you the number of frames it has rendered per second. In a compositing environment this has absolutely nothing to do with the physical frame rate however. You should use the compiz Benchmark plugin to get the real physical frame rate. -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1049214 Title: [nvidia] XSync usage is a massive bottlenecking factor (nvidia performance regression in Compiz 0.9.8+) To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1049214/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp
