Bug 467841 - PlasmaDesktopTheme::syncWindow() uses a lot of memory
Summary: PlasmaDesktopTheme::syncWindow() uses a lot of memory
Status: RESOLVED FIXED
Alias: None
Product: frameworks-qqc2-desktop-style
Classification: Frameworks and Libraries
Component: general (other bugs)
Version First Reported In: 5.104.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: kdelibs bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-03-27 04:26 UTC by liuxy6
Modified: 2023-12-06 20:18 UTC (History)
6 users (show)

See Also:
Latest Commit: 14aeee5e9214aef2ae6a7ee18ea98e9471511c5b
Version Fixed/Implemented In: 6.0,5.112.0
Sentry Crash Report:

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Description liuxy6 2023-03-27 04:26:41 UTC 
SUMMARY
I've observed that plasmashell sometimes keeps allocating more and more memory - over 20GB in a few minutes, but normally it should use less than 500MB.

Most of the memory is allocated by this line in `PlasmaDesktopTheme::syncWindow()`.

            connect(qw, &QQuickWindow::sceneGraphInitialized, this, &PlasmaDesktopTheme::syncWindow).

I tried adding `Qt::UniqueConnection` to this connection, and so far the problem has not reappeared, and no other problems have been observed.


STEPS TO REPRODUCE
1. start plasmashell
2. switch to another tty
3. wait for some time (about 30 minutes)


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.27.3
(available in About System)
KDE Plasma Version: 5.27.3
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8
X11

ADDITIONAL INFORMATION