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[Bug 1572801] Re: Ubuntu 16.04 Unity desktop uses much more ram than Ubuntu 15.10

 

I am not sure this is a kernel issue. A few days after posting #17 I
added MATE desktop and removed all Unity applications and the problem
was resolved, with exactly the same daily usage schema. I enjoy Unity
but needed a usefull machine. Now my average memory usage is 22% out of
4GB (867MB) including cache. Problem before was present even when
machine was iddle, that is no longer a problem.

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https://bugs.launchpad.net/bugs/1572801

Title:
  Ubuntu 16.04 Unity desktop uses much more ram than Ubuntu 15.10

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  Incomplete

Bug description:
  Ubuntu 16.04 64bit ISO number 20160420.1
  unity version 7.4.0+16.04.20160415-0ubuntu1
  Ubuntu 16.04 64bit ram usage has increase dramatically over Ubuntu 15.10
  Ubuntu 16.04 ram roughly 1 GB Ubuntu15.10 can be tuned to 420, 450 MB
  Ubuntu 16.04 with unity uses 1GB whereas Kubuntu 16.04 is using 420MB live usb

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: unity 7.4.0+16.04.20160415-0ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.376
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Thu Apr 21 01:44:22 2016
  DistUpgraded: Fresh install
  DistroCodename: xenial
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1043:8534]
  GsettingsChanges:
   b'org.compiz.core' b'outputs' b"['1920x1080+0+0']"
   b'org.compiz.core' b'active-plugins' b"['core', 'composite', 'opengl', 'place', 'regex', 'resize', 'session', 'snap', 'vpswitch', 'wall', 'animation', 'commands', 'compiztoolbox', 'copytex', 'fade', 'grid', 'imgpng', 'mousepoll', 'move', 'scale', 'unitymtgrabhandles', 'workarounds', 'expo', 'ezoom', 'unityshell']"
   b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
   b'org.gnome.desktop.interface' b'scaling-factor' b'uint32 1'
  LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: ASUS All Series
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash --- cdrom-detect/try-usb=true noprompt
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/03/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2004
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z87-PLUS
  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.:bvr2004:bd06/03/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ87-PLUS:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: All Series
  dmi.product.version: System Version
  dmi.sys.vendor: ASUS
  version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1
  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
  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: Thu Apr 21 01:37:17 2016
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.18.3-1ubuntu2

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