Solomon Peachy via devel wrote:
> Also, the numbers are purely *GPU* load, ignoring the rest of the system
> (eg the CPUs).  Given that Wayland was designed to offload *more* work
> onto the GPU, a higher GPU load in of itself isn't surprising.

There (from the same author, I am only linking to his posts) you have CPU 
and power consumption data:
https://www.dedoimedo.com/computers/plasma-6-4-performance-wayland-x11-power-cpu-kernel.html

> Heck, was any attempt made to repeat things?

There he did the same kind of benchmarks on a different computer with a 
different GPU vendor:
https://www.dedoimedo.com/computers/wayland-vs-x11-performance-nvidia-graphics.html

> They used "the same set of programs" but didn't actually enumerate what
> those were (or the workloads).  What toolkits/versions?  Were any of
> these applications Wayland-native or are they all X11-only?  Did any of
> them use some sort of 3D graphics (eg Vulkan or OpenGL)?

And there he benchmarked some specific workloads: video decoding (at 4K 
resolution) and WebGL rendering (the latter uses 3D graphics indeed):
https://www.dedoimedo.com/computers/wayland-vs-x11-performance-amd-graphics.html

And the result is always the same: X11 is faster and consumes less power and 
other resources.

        Kevin Kofler

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