So I found a situation where emacs -Q runs a loop 60x slower than my personal Doom Emacs config!
Any #emacs#lisp wizard who might have an idea why? It's as if it's garbage-collecting for a whole minute. It's not the loop itself that's slow, because it actually completes all iterations, and only then does Emacs hang.
@louis@kakafarm I just learned that a too big chunk of garbage invites something called OS paging... That's why gcmh-mode uses 16 MB as the "high" value.
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