I'm not sure, if it is correct to post here, but I had a similar problems since I updated to ubuntu 14.04 LTS (x86_64k). Sometimes I had more than 500MB for each compiz and xorg, which once summed up in 1,2 GB. The system was very slow, then I even thought it had been freezed (but it wasn't), even with a total memory of 4 GB. I used the drivers form http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu, installed the newest kernel, nothing seemed to help.
Finally I tried installing xserver-xorg-video-ati , which hadn't been installed, and voila now the system is fast again as it should be, although it seems as if the same driver (radeon) is used. Current system: Ubuntu 14.04 LTS (x86_64k), kernel 3.14.1, [AMD/ATI] RS880 [Radeon HD 4250], radeon graphic driver ( recent drivers from: http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu ) -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/870042 Title: Memory leak in compiz (and maybe Xorg) Status in Unity: Incomplete Status in X.Org X server: New Status in “unity” package in Ubuntu: Incomplete Bug description: Compiz and Xorg both use large amounts of RAM, right now on my system compiz is using 206 megabytes (and growing) and Xorg is using 176 megabytes. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: unity 4.22.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 280.13 Wed Jul 27 16:53:56 PDT 2011 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu2 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell] CompositorRunning: compiz Date: Fri Oct 7 09:39:06 2011 DistUpgraded: Log time: 2011-10-04 18:54:48.035566 DistroCodename: oneiric DistroVariant: ubuntu DkmsStatus: nvidia-current, 280.13, 3.0.0-12-generic, x86_64: installed vboxhost, 4.1.2, 3.0.0-12-generic, x86_64: installed GraphicsCard: nVidia Corporation Device [10de:1251] (rev a1) (prog-if 00 [VGA controller]) Subsystem: CLEVO/KAPOK Computer Device [1558:5102] InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2) JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use) xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use) MachineType: System76, Inc. Gazelle Professional ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=ec478c56-ee35-4e4e-9915-ddd75d17f872 ro quiet splash pcie_aspm=off vt.handoff=7 SourcePackage: unity UpgradeStatus: Upgraded to oneiric on 2011-10-04 (2 days ago) dmi.bios.date: 08/09/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.4 dmi.board.asset.tag: Not Applicable dmi.board.name: Gazelle Professional dmi.board.vendor: System76, Inc. dmi.board.version: gazp6 dmi.chassis.asset.tag: Not Applicable dmi.chassis.type: 10 dmi.chassis.vendor: System76, Inc. dmi.chassis.version: gazp6 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd08/09/2011:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp6:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp6:cvnSystem76,Inc.:ct10:cvrgazp6: dmi.product.name: Gazelle Professional dmi.product.version: gazp6 dmi.sys.vendor: System76, Inc. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3 version.ia32-libs: ia32-libs 20090808ubuntu25 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/870042/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp

