this post was submitted on 30 Oct 2023
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Share how did you make Emacs faster. (alien.top)
submitted 1 year ago by larrasket@alien.top to c/emacs@communick.news
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I've been looking for methods to improve Emacs performance especially with my configuration being over >3k. I'm not particularly interested in startup-time since I never close Emacs. Here's what I found so far

(setq package-native-compile                            t
      gcmh-high-cons-threshold                          100000000
      gc-cons-threshold                                 100000000
      scroll-conservatively                             101
      jit-lock-defer-time                               0
      large-file-warning-threshold                      nil)



(add-hook 'after-init-hook #'(lambda () (setq gc-cons-threshold (* 100 1000 1000))))
(defvar gc-timer nil)
(defun salih/maybe-gc ()
  (let ((original gc-cons-threshold))
    (setq gc-cons-threshold 800000)
    (setq gc-cons-threshold original
          gc-timer (run-with-timer 2 nil #'salih/schedule-maybe-gc))))

(defun salih/schedule-maybe-gc ()
  (setq gc-timer (run-with-idle-timer 2 nil #'salih/maybe-gc)))

(salih/schedule-maybe-gc)

I can tell that I've noticed some improvements.

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[–] jplindstrom@alien.top 2 points 1 year ago

Can you say what's going on here?

I'm assuming it's avoiding doing work, but from which package? Something in core Emacs?