https://bugs.kde.org/show_bug.cgi?id=474347
Bug ID: 474347
Summary: Last update from KDE destroyed system performance and
loop CPU & GPU load
Classification: Plasma
Product: kwin
Version: 5.27.7
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: phoenix91...@gmail.com
Target Milestone: ---
Created attachment 161529
--> https://bugs.kde.org/attachment.cgi?id=161529&action=edit
cpu load
SUMMARY
Lastest update (5.27.7) loads CPU for 33-44% all the time. Top processes that
eat whole cpu are KWin_X11 (if Wayland, then Kwin_Wayland) and plasma_shell.
Any window movement also increases CPU load dramatically. Seems like something
messed up with patches applied to KWin on latest (5.27.7) update. Unfortunately
rollback to 5.27.6 impossible (due to no packaged remaining in system and
OpenSUSE repository). Seems like KWin keep doing something erroneous in the
loop loading half of cpu almost. All the rest in whole system is fine, expect
KWin. Please fix bug.
STEPS TO REPRODUCE
1. Update KDE 5.27.7
2. Start opening lightweight apps, like Telegram, Ksysguard and even move
windows around and get almost 100% cpu load by Kwin_X11 and plasmashell
3.
OBSERVED RESULT
KWin does something incorrect with rendering utilizing CPU in the loop and also
wasting GPU time.
EXPECTED RESULT
Fast, flawless almost no load operation as before update.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.109.0
Qt Version: 5.15.10
OpenSUSE Tumbleweed x86_64. Intel® Xeon® CPU E3-1575M v5 @ 3.00GHz, Quadro
P3000/PCIe/SSE2.
ADDITIONAL INFORMATION
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