fwiw I live in [macOS emacs](https://emacsformacosx.com/) all day long for systems engineering (C/C++) and have 201 open buffers, an uptime of 57 days and ~540 MB memory usage.
I used to use that version of emacs, but performance issues on my Mac Studio made using it just untenable. I switched to Homebrew's "emacs-plus" which does not suffer, for whatever reason, the same performance issue. Based on TFA, I'm somewhat baffled as to why, but I can't argue with results.
I also live in macOS Emacs built from source, currently running 31.0.50. Linux kernel dev over TRAMP w/ clangd language server, ~300 open buffers and <500MB memory.
e40|7 months ago
donaldihunter|7 months ago
m463|7 months ago
It seems around that time they added some processing loop that really made things sluggish.