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List:       kwin
Subject:    [Bug 201718] New: Kwin composite desktop effects memory leak
From:       Yvan Da Silva <dl.zerocool () gmail ! com>
Date:       2009-07-27 22:55:12
Message-ID: bug-201718-4790 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=201718

           Summary: Kwin composite desktop effects memory leak
           Product: kwin
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kwin@kde.org
        ReportedBy: dl.zerocool@gmail.com


Version:            (using KDE 4.2.98)
OS:                Linux
Installed from:    Ubuntu Packages

The bug is quite easy to repeat.

Go to kde system settings and then desktop settings.

Check how much memory kwin is using normally around 19mb~

Disable desktop effects apply.
Enable desktop effects apply
(ALT+SHIFT+F12 if you have the shortcut does it too)

Check now how much memory kwin is using, for me kwin was using 30mb~

Opengl backend
Independ from OpenGL mode used "pixmap or shared memory"
8600M GT 
(No matter what the driver is used, I'm always changing)
The plug-ins doing this are the following in order of "memory usage after turn
off/on" from low to high. 
"Translucency" really few mb used, but well it's a memory leak anyway (around
1mb by off/on switches).
"Desktop Cube" I go from 19mb to 29mb.
"Logout plugin" very high memory usage(Corrected on the other bug report)
https://bugs.kde.org/show_bug.cgi?id=201445

If this plugins are deactivated it helps a lot but, there's something more that
I can't find what it is.

Because even with this plugins turned off there's something eating each time
around more 1mb by switches of composite effects.
When I do not check in general tab the "Improved window management" then
there's no more memory leak.

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