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[Ron Karoles <rkaroles@xxxxxxxxxxx>]

** Changed in: unity (Ubuntu)
     Assignee: Jason Smith (jassmith) => Ron Karoles (rkaroles)

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https://bugs.launchpad.net/bugs/888039

Title:
  Gradual degradation in desktop performance.

Status in Unity:
  Fix Released
Status in unity package in Ubuntu:
  Fix Released
Status in unity source package in Oneiric:
  Won't Fix

Bug description:
  SRU test case:

  1. start Ubuntu and use it for a few hours
  2. After the constant usage of a few hours there general performance degrade noted
  3. now install NUX from oneiric-proposed
  4. The situation is much imporved

  =====Original Report====
  edit - This bug has been scoped down to a particular std:vector<int> growing out of control inside of nux. Any report about degrading performance not related to this should be filed as new bugs. :) Thanks guys.

  Over the span of 1-3 days I see my desktop consistently become more
  sluggish. The functions most affected are window movement, file icon
  movement, and sometimes window resizing. Other animations (such as
  minimizing fades, switching desktops, expo mode) are not affected when
  this degradation occurs. They remain smooth; however, I have let the
  problem go on as long as to find out that eventually all desktop
  animations/effects will degrade, it just takes a lot lot longer. I
  find that my actual 3D gaming goes unaffected (though I have no data
  to back that up, perhaps it does).

  I have recorded the output of 'ps auxw' and have slowly watched the
  VSZ and RSS memory columns creep upwards. A fresh compiz session will
  see 675164 and 169860, respectively. After a day or two it will result
  in as high as 878552 and 255664. I have attached a log output from an
  hourly cron job (though I had suspended for a few days because of
  travel).

  After the degradation has occurred compiz will consistently use higher
  CPU. Dragging a terminal window while watching top: before: ~10%,
  after: ~30 percent.

  This has been an issue since 11.04 for me on both my Intel i915 and
  Nvidia (proprietary) machines (had an 8600 GT and upgraded to 560 GTX,
  both having the same issue). However, the nvidia machine is where it
  really hurts, _always_ happening within a day or two, while the i915
  machine is pretty reliable overall with certain instances of
  degradation (used to be affected just as badly in 11.04).

  I will attach two videos demonstrating behavior before and after.
  ---
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  CheckboxSubmission: 33c9cec13de798ee31ce4ea2f2cbd4df
  CheckboxSystem: 4ed15c40009aa6f7770f606350a390a2
  CompizPlugins: [core,detection,composite,opengl,decor,regex,winrules,compiztoolbox,animation,grid,vpswitch,snap,place,gnomecompat,resize,move,mousepoll,imgpng,workarounds,session,expo,wall,fade,scale,unityshell]
  DistroCodename: oneiric
  DistroRelease: Ubuntu 11.10
  DistroVariant: ubuntu
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  NonfreeKernelModules: nvidia
  Package: compiz 1:0.9.6+bzr20110929-0ubuntu5vv1
  PackageArchitecture: all
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Tags:  oneiric running-unity oneiric running-unity ubuntu
  Uname: Linux 3.0.0-12-generic x86_64
  UnreportableReason: This is not a genuine Ubuntu package
  UpgradeStatus: Upgraded to oneiric on 2011-10-13 (26 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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