esup

Are you on Emacs 28? Native-comp is enabled by default and it's Just Worked™ for me. Or are you on at least Emacs 27? Emacs 27 added native JSON parsing; stuff like lsp-mode works a lot better now. (Personally running Emacs 29 built from source on an M1 Pro; everything is instant! Even on my old dumpy i5 machine, everything except startup was pretty snappy, with the exception of startup which took ~4 seconds.) If it's startup you're concerned about, try the esup[1] package to figure out what's taking so long. [1]: https://github.com/jschaf/esup

There is a profiler built into Emacs that will help: https://www.gnu.org/software/emacs/manual/html_node/elisp/Pr... https://www.emacswiki.org/emacs/EmacsNativeProfiler Also, ESUP for profiling your startup time: https://github.com/jschaf/esup There's also a second profiler in Emacs, ELP, which can be used for testing individual functions: https://www.emacswiki.org/emacs/EmacsLispProfiler