Public bug reported: I recently did a fresh install of ubuntu 16.04, then installed mate. With only gnome terminal running, gtk-window-decorator is using 6.3 gigabytes of resident memory.
$ uptime 16:10:01 up 1 day, 2:05, 4 users, load average: 1.85, 2.17, 2.36 (with firefox open, the load seems high too - Xorg, compiz, mate-session, dbus-daemon....) PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2081 darxus 20 0 8392144 6.339g 18828 S 2.0 81.3 28:39.54 gtk-window-deco It's from compiz-gnome package Version: 1:0.9.12.2+16.04.20160526-0ubuntu1 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: compiz-gnome 1:0.9.12.2+16.04.20160526-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 BootLog: CompizPlugins: [core,composite,opengl,decor,wobbly,cube,td,rotate] CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: MATE Date: Tue Jun 7 16:07:36 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Barts XT [Radeon HD 6870] [1002:6738] (prog-if 00 [VGA controller]) Subsystem: Hightech Information System Ltd. Barts XT [Radeon HD 6870] [1787:2010] InstallationDate: Installed on 2016-05-28 (10 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) LightdmDisplayLog: (II) AIGLX: Suspending AIGLX clients for VT switch LightdmLog: [+73981.26s] DEBUG: Seat seat0 changes active session to [+73984.20s] DEBUG: Seat seat0 changes active session to 25 [+73994.32s] DEBUG: Seat seat0 changes active session to [+73995.31s] DEBUG: Seat seat0 changes active session to c2 [+73995.31s] DEBUG: Session c2 is already active MachineType: System manufacturer System Product Name ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=e18f152f-ce09-4257-a6ca-13ec4b6dd630 ro quiet splash SourcePackage: compiz UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/06/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3503 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M4A79T Deluxe dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3503:bd05/06/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A79TDeluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Mon Jun 6 14:04:29 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.3-1ubuntu2.2 xserver.video_driver: radeon ** Affects: compiz (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 ubuntu xenial -- 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/1590136 Title: gtk-window-decorator using 6.3gb resident memory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1590136/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp