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You know that all the Wayland primitives, event handling and drawing in gnome-shell are handled in C/native code through Mutter, right ? The JavaScript in gnome-shell is the cherry on top for scripting, similar to C#/Lua (or any GCed language) in game engines, elisp in Emacs, event JS in QtQuick/QML.

It is not the performance bottleneck people seem to believe.





I can dig out the old GNOME tickets and related blog posts...

Implementation matters, including proper use of JIT/AOT toolchains.

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>I can dig out the old GNOME tickets and related blog posts...

That's the easiest way you can win any argument on gnome. You're going straight for the nuclear option.

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It has been the case that stalls in the GJS land can stall the compositor though, especially if it's during a GC cycle.

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is GJS in the compositor?

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