Thanks. Also, after a bit of thought, i do believe you are right saying that we should remove one frame of all the raw camera data. … it will, as you say, decrease the absolute values and make Wayland more laggy proportionally, yet, it doesn’t change the absolute difference.
This Earth, the only true home i ever had and will ever have, is not my world, i’m just a passerby in here … it is yours and it is strange.
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Cake day: June 13th, 2023
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Latency raw data :
Gnome Variant Δ camera frames Average (Δ) Δ milli seconds Δ monitor refreshes X11 5 4 3 4 5 4 6 5 1 4 4 4 3 4 4 4 4.00 16.7 2.4 Wayland 6 5 6 5 5 6 6 4 8 6 5 5 5 6 5 6 5.5625 23.2 3.3 Δ(Δ) - - ~1.5 ~6.5 ~1.0 instead of calculating the average one could decide to drop the data points that are way outside of their goups.
Doing so, in the first group I would neglect the value of Δ = 1 or 6 frame and in the second group I would neglect the value of 4 or 8 framesResults :
X11 : from 3 to 5 frames
Wayland : from 5 to 6 frames
Δ(Δ) = 5.5 - 4 = 1.5Still it doesn’t change the final result that the difference between these two Gnome versions is 1.5 camera frames at 240 frames per second.
Disclaimer : i’m no expert here.
TLDR : Direct memory access (DMA) is written in c language. DMA is necessary for fast drivers. But now more drivers are written in Rust.
Linus Torvalds (head of Linux kernel) had to decide how to resolve conflicts between maintainers and developers, who prefer different languages and/or different workflow methods.