https://bugs.kde.org/show_bug.cgi?id=490358
Michael Marley <mich...@michaelmarley.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|WAITINGFORINFO |---
Status|NEEDSINFO |REPORTED
--- Comment #3 from Michael Marley <mich...@michaelmarley.com> ---
I've been doing more investigation of this and I decided to do a build of kwin
6.1.3 with
https://invent.kde.org/plasma/kwin/-/commit/d7385d441417d8f43cfb09341b5c0ae449ccd219
and
https://invent.kde.org/plasma/kwin/-/commit/ce1ba4252552c7f314149e8be87d5d63fca0210c
cherry-picked, since they seemed to be related to graphical performance. Much
to my surprise, that actually made my issues significantly worse, with the
framerate regularly falling to ~30fps for several seconds at a time. I then
tried disabling triple-buffering (export KWIN_DRM_DISABLE_TRIPLE_BUFFERING=1).
That made the issue much, much better, with significantly fewer frame drops and
no more ~30fps. So, it seems like when kwin tries to use triple buffering, it
is dropping to ~30fps for some reason. This seems counter-intuitive because
triple-buffering is supposed to improve performance, but that is nevertheless
what I am seeing.
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