https://bugs.kde.org/show_bug.cgi?id=463718
Bug ID: 463718
Summary: System performance severely degrades as I use PC until
plasma restart
Classification: Plasma
Product: plasmashell
Version: 5.26.4
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: generic-performance
Assignee: plasma-b...@kde.org
Reporter: gudvinr+...@gmail.com
Target Milestone: 1.0
SUMMARY
If I use PC with Plasma (wayland) running, performance significanly drops over
time.
It is subjectively noticeable (e.g. cursor becomes laggy, windows do not move
smoothly, etc) and objectively measured (I tried to play some games while I
usually have 150+ FPS and in same conditions I have less than 60 until I
restart plasma).
I tried to investigate this more myself I first I thought it is caused by
something in the system because it goes away after reboot. But then I tried to
e.g. play same games with every heavy app killed and it's same thing. Also
tried to restart just graphical environment by Ctrl+Alt+Backspace and it helps
too.
I also suspected that it could be caused by Night Color kicking in but I wasn't
able to remove it out of the equation or confirm it because I use kde-inhibit
when I launch steam so it isn't running while I play and observe this
behaviour.
I don't use X11 session for a while now and last time I did it messed up my
display layout so I don't want to switch back and forth.
Also I think it started to happen last fall, around 5.26 release. Maybe after
one of the point releases of 5.26 but it'd be rather complicated to cherry pick
every release and test myself because I don't even know which component might
cause that. And that's very time consuming not to mention that version jumping
might result in configuration corruption or some other nasty bugs.
STEPS TO REPRODUCE
1. Use PC for a while
OBSERVED RESULT
PC starts being very laggy
EXPECTED RESULT
PC not being laggy after running plasma for some time
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
Kernel Version: 6.1.1-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-8705G CPU @ 3.10GHz
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX Vega M GL Graphics
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