https://bugs.freedesktop.org/show_bug.cgi?id=36596 --- Comment #4 from Jason Cassell <bluesloth600@xxxxxxxxx> 2011-04-28 16:36:31 PDT --- (In reply to comment #3) > Does that involve wobbly windows or any other effects? It's the same problem with and without wobbly windows. One thing I noticed with wobbly windows is that sometimes (but not every time) when the framerate goes back to normal, they'll wobble very fast, like they're trying to "catch up". It looks like it's trying to render all the frames, but some of them just show up late, like something got delayed in a buffer somewhere. I only notice that with wobbly windows, but that might just be because the wobbling makes the phenomenon easier to see. > Did you double-check that enabling LLVM actually worked? The configure script output says it's using llvm, and "llvm" appears a lot in the build log. I don't know if there's anything else to check. > If that's not the problem, and if the slowness coincides with high CPU usage, a > profile from sysprof or oprofile might give some ideas. The slowness coincides with very low CPU usage. According to htop, when it's working fine, compiz uses from 5% to 16% CPU to move windows around, depending on the window and whether they're wobbly. When it's slow, compiz's CPU usage is 0.0%, and the CPU usage of everything else combined is less than 2%. This is on a dual core 2 GHz CPU, probably throttled back to 800 Mhz, but I don't know for sure because I wasn't running conky. htop refreshed every 2 seconds. Sometimes a refresh would make compiz freeze for a fraction of a second, but most of them didn't. Would it be useful to profile something anyway? BTW, I should have mentioned that I have to boot with the "noirqdebug" kernel parameter, otherwise the kernel will sometimes disable the Radeon's IRQ saying "irq 19: nobody cared" (the exact message is no longer in the logs). Once the IRQ was disabled, everything still worked, but more slowly. I also have scrolling performance problems in compiz, but compiz is infamous for causing things like that, so I'm guessing it's a different bug, and I'll worry about it later. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
