I also suffer on this problem on an ultra high end laptop with an i7 processor and a nvidia quadro 1000M (proprietary driver activated) graphics card running a clean install of the latest 12.10 builds. There are always two processes comsuming a lot of cpu: Xorg and compiz. At Idle both use around 3% cpu. If i do somthing, it doesn't matter if it is snapping a window, resizing a window, launch a programm or watch a video: compiz climbes up to 50% (very often) and sometimes even up to 118 for a second. This should not be the case. Disabling Unity plugin does not help very much, and disabeling sync to Vblank results in tearing (although cpu goes down a bit). I hope this bug can be fixed till the release of 12.10, because the Unity interface will be nearly perfect right then. This is a really big performance issue with high importance, because it can make users switch. Compiz and Xorg alone are causing very high CPU usage. KDE actually has a bit better performance concerning moving tasks ans especially snapping (compiz often consumes lot of cpu concerning this). When I play a video in KDE X is about 10% and kwin around 1 or 2 %. In Ubuntu Xorg is about 10% and compiz around 10%. But I have to admit Compiz is making great progress! I hope that 12.10 brings a lighter compiz!
-- You received this bug notification because you are a member of Tieto, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/803943 Title: compiz consuming a lot of cpu Status in Compiz: Confirmed Status in Compiz Core: Confirmed Status in Unity: Confirmed Status in “compiz” package in Ubuntu: Confirmed Status in “unity” package in Ubuntu: Confirmed Bug description: This problem is exclusive to unity (when running compiz with gnome- panel, this doesn't happen). 1. Close all windows opened, if any 2. Open a terminal and run 'top' 3. Notice that compiz is consuming a lot of CPU time (although there is nothing special running). In my case, it's consuming about 13% when idle. 4. Unmaximize the terminal window, if maximized, and start moving the window slowly 5. Notice that compiz is now consuming much more CPU than before (in my case, arround 50%). 6. Open a video. 7. Notice that compiz consume much more CPU than idle (about 25% in my case), although I'm not doing anything related to window management. 8. (optional) Install the gnome-panel package and choose "GNOME classic" in login screen. Start compiz with "compiz --replace" and follow the steps from 1 to 7. Notice that the CPU consuming is much lower (in my case, 1% when idle, 25% when moving the window and 9% with the video). ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: unity 4.0.1-0ubuntu2 [modified: usr/bin/unity-preferences usr/share/applications/unity-preferences.desktop] ProcVersionSignature: Ubuntu 3.0-2.3-generic 3.0.0-rc4 Uname: Linux 3.0-2-generic i686 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,vpswitch,imgpng,resize,snap,grid,regex,move,gnomecompat,mousepoll,animation,unitydialog,wall,workarounds,place,expo,ezoom,session,staticswitcher,fade,scale] Date: Thu Jun 30 11:54:20 2011 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110610) ProcEnviron: LANGUAGE=pt_BR:en LANG=pt_BR.UTF-8 SHELL=/bin/bash SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/803943/+subscriptions -- Mailing list: https://launchpad.net/~tieto Post to : [email protected] Unsubscribe : https://launchpad.net/~tieto More help : https://help.launchpad.net/ListHelp
