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[Eero-t-tamminen <1415926@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1065657 ***
    https://bugs.launchpad.net/bugs/1065657

** This bug has been marked a duplicate of bug 1065657
   compiz leaks window handles (and pixmaps?)

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https://bugs.launchpad.net/bugs/1415926

Title:
  Compiz leaks Windows resources

Status in compiz package in Ubuntu:
  New

Bug description:
  Steps to reproduce:
  1. Run "xrestop" and check how many Windows Compiz uses
  2. Run large number of other (3D) applications
  3. Redo 1)

  Actual outcome:
  - X Windows references by Compiz constantly increases although all run programs have been closed

  Expected outcome:
  - No leakage, of X resources or other things

  This happens with latest Compiz version both on Ubuntu 14.04 and
  Ubuntu 14.10.

  How did I notice this:
  - Running many application causes random OOM killings with recent (end of January intel-drm-next) kernel built from sources, on a BDW machine
  - When reproducing the issue, I first thought this a kernel leakage because according to "slabtop", kernel vm_page_struct object numbers were increasing
  - From kernel backtraces on OOM-kill I could see that it was triggered by graphics memory allocation failure so I checked from sysfs whether DRI/GEM objects were leaking, but that didn't show anything leaking
  - However, with "xrestop" I could see that Compiz was leaking Windows resources.  I think that explains the vm_page_struct object count increase on the kernel side, i.e. that was just result of Compiz leakage on user-space

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