Comment 38 for bug 861061
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| Rocko (rockorequin) wrote Re: compiz 3d performance regression | #38 |
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1b1ed1a
(Get the code!)
I have reproduced the problem with the PPA version of compiz. It was *much* harder to reproduce it with the PPA version, though.
I think it might be related to memory stress - my system ran out of RAM and was using swap heavily, glxspheres dropped to around 40fps, and compiz was only reported as using 31MB of RAM instead of the more normal 120MB. Killing processes so that RAM usage returned to normal didn't help, though. (Currently the system is showing 37MB of swap usage.)
Restarting unity and then compiz didn't help - in fact performance dropped to 30fps, although compiz was again using 120MB. Logging in and out also didn't help (still 30fps).
Restarting lightdm made performance go back up to 40-44fps.
('Force sync between X and GLX' doesn't help, either. But the jerky windows movement must be a different issue because it occurs independently of the glxspheres slowdown - I don't have jerky windows at the moment but I do have the drop in glxspheres' fps.)