GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.30, cairo version 1.17.4) of 2021-08-06

CIDER 1.2.0snapshot (package: )

lsp-mode , Emacs 28.0.50, gnu/linux + clojure-lsp 2021.11.02-15.24.47

M-x debug-on-quit and C-g whenever it's freezing? There's also a nice profiler apparently

n.b., afacit there isn't an official doc laying out how cider and clojure-lsp should play together in emacs. It doesn't seem trivial that they overlap here and there, and they keep changing. a cider-nrepl + lsp combo is nicely done/curated in Calva, so it's not something impossible or complex. But if you're gonna roll it yourself... here be dragons 🐉

It's quite easy to make both play nice

you get to pick & choose who's doing what

if you need inspiration: https://github.com/mpenet/emax/blob/master/init.el#L475-L507

also the conf from @UKFSJSM38 might be of interest: https://github.com/ericdallo/dotfiles/blob/master/.doom.d/config.el

when this problem occurs I can't get emacs to react to anything (well, except for kill -9), even C-g so I'm not sure if debug-on-quit will help. But I'll check it out, thanks

you can send instead kill -USR2 to trigger a quit if you had set debug-on-quit beforehand, you'll get a stacktrace of w/e was keeping emacs busy at that moment

debug-on-quit should help understand on what function is stuck

good to know. one thing that might complicate things is that when my emacs freezes it isn't consuming a lot of cpu. so it doesn't look like a typical case of a thread stuck in a loop

I had a very similar thing happen but it was specifically when using ^: for metadata tags. Never figured out why but profiling etc seemed to point to syntax highlighting