https://bugs.kde.org/show_bug.cgi?id=521474
Bug ID: 521474
Summary: Game Performance (eg: Mincraft Java) Lower on Xwayland
and Wayland backends in Vulkan and OpenGL
Classification: Plasma
Product: kwin
Version First 6.6.5
Reported In:
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: performance
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
DESCRIPTION
Game performance decreases when using native wayland and xwayland backends in
non-framecapped (immediate/non-vsync) usecases. This also reproduces in simpler
testcases like with glmark2
NVIDIA Jetson Orin Nano Super:
NVIDIA Jetpack 7.2
KDE Neon 24.04
Plasma 6.6.5
GPU Driver (latest): 595.78
Plasma 6.6.5
Vulkan (1.4.329):
Wayland: 108fps
Xwayland: ~44fps (unstable)
Xorg: 117fps
OpenGL (4.6):
Wayland: ~35fps (unstable)
Xwayland: ~35fps (unstable)
Xorg: 66fps
OBSERVED RESULT
Wayland and Xwayland performance worse than Xorg performance (especially
Xwayland)
EXPECTED RESULT
Wayland and Xwayland performance near/exceeding Xorg performance
SOFTWARE/OS VERSIONS
Operating System: KDE Neon
KDE Plasma Version: 6.6.5
KDE Frameworks Version: 6.26.0
Qt Version: 6.11.1
Kernel Version: 6.8.12-1021-tegra
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