emacs-lsp-booster

> How do you make LSPs fast? https://github.com/blahgeek/emacs-lsp-booster The fundamental issue is Emacs its JSON parser is currently still rather slow (not sure why actually). But in LSP mode it needs to parse the LSP server's many JSON response messages very quickly. The aforementioned booster converts all JSON into ELISP byte code so Emacs can process LSP messages much faster. I guess, the Emacs project will have to tune their JSON parser in the future.

> Emacs is also objectively dogshit in a lot of ways compared to most modern editors Yet not a single modern editor can even come close to it when it comes to extensibility and customization; self-documenting; complete programmability; malleability; ability to perform virtually any computing task without leaving the editor. Modern editors excel at being user-friendly out of the box. Emacs excels at becoming exactly what each user needs it to be. While you find yours to be "objectively dogshit" in comparison, I can probably easily demonstrate to you how mine eats their "modern" shit without even chocking. > LSP is ridiculously slow Have you tried to get to the bottom of it? Sometimes it just the lsp-server implementation that is slow. Have you tried https://github.com/blahgeek/emacs-lsp-booster? Did you build Emacs --with-native-comp flag?

> LSP on emacs working well enough but the performance just isn't there. Have you tried https://github.com/blahgeek/emacs-lsp-booster? Also, build Emacs --with-native-comp flag

Someone made a alternative way of optimizing LSP by converting the JSON to elisp bytecode on the fly: https://github.com/blahgeek/emacs-lsp-booster

a) Build it with native-compilation flag b) Use https://github.com/blahgeek/emacs-lsp-booster c) Tweak GC vars, see: https://emacs-lsp.github.io/lsp-mode/page/performance/ d) Use plists for deserialization (described in the previous link) e) Learn how to use built-in profiler and don't hesitate to launch it, sometimes simply disabling some minor-mode in specific setting is all it takes f) Current state of Tree-sitter in Emacs is a mixed bag - for some modes you get huge improvements, for others it's the opposite. YMMV.

You can go and use: https://github.com/blahgeek/emacs-lsp-booster …I hardly ever run into any performance issues anymore with lsp when using that. The author mentions it, and I use it with Doom every day with minimal issues.

Emacs have some issues with LSP speed because of the json parsing not being the fastest which have lead to work like this: https://github.com/blahgeek/emacs-lsp-booster.