https://bugs.kde.org/show_bug.cgi?id=421537
Bug ID: 421537
Summary: New Window Rules kcm: scrolling through window rules
list causes high cpu usage
Product: systemsettings
Version: 5.18.90
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: bugsefor...@gmx.com
Target Milestone: ---
Created attachment 128468
--> https://bugs.kde.org/attachment.cgi?id=128468&action=edit
screenshot
STEPS TO REPRODUCE
1. have dozens of window rules configured on your system
2. open system activity by pressing ctrl+esc
3. open system settings > window management > window rules
4. scroll the window rules list and observe the cpu usage
OBSERVED RESULT
high cpu usage, see the attached screenshot taken on X11 please.
On Wayland cpu usage is even worst, sometimes reaching 50% on my system.
EXPECTED RESULT
normal cpu usage
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.18.90
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0 rc2
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