[oblio]

LSP runs in a separate process, but handling that process is synchronous in Emacs, I think. So if LSP is slow for something, Emacs will block.

[lallysingh]

Yes it gives us both a super-predictable queued operations model for using emacs, and serial operation in a parallel world. Years ago when single core performance was king this wasn't an issue, but now we're stuck having to optimize the long hot path.

[jonnycomputer]

The next AMD processor should have an optional Emacs dedicated core.