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Optimize init startup time

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This commit is contained in:
Jeremy Dormitzer 2020-01-13 19:07:01 -05:00
parent b2b46c04a6
commit b387c1abb2
1 changed files with 41 additions and 4 deletions
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45
emacs/init.org
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@ -10,7 +10,44 @@ Enables lexical binding for everything in init.el:
;;; -*- lexical-binding: t; -*-
#+END_SRC
Variables:
** Garbage collection
Some GC tweaks [[https://github.com/hlissner/doom-emacs/blob/develop/docs/faq.org#how-does-doom-start-up-so-quickly]["borrowed" from Doom emacs]].
Turn off GC during init and restore it afterwards:
#+BEGIN_SRC emacs-lisp
(setq gc-cons-threshold most-positive-fixnum
gc-cons-percentage 0.6)
(add-hook 'emacs-startup-hook
(lambda ()
(setq gc-cons-threshold 16777216
gc-cons-percentage 0.1)))
#+END_SRC
Also suppress GC for 1 second after the minibuffer is active to avoid stuttering autocompletion and other GC hangups:
#+BEGIN_SRC emacs-lisp
(defun defer-garbage-collection ()
(setq gc-cons-threshold most-positive-fixnum))
(defun restore-garbage-collection ()
(run-at-time
1 nil (lambda () (setq gc-cons-threshold 16777216))))
(add-hook 'minibuffer-setup-hook #'defer-garbage-collection)
(add-hook 'minibuffer-exit-hook #'restore-garbage-collection)
#+END_SRC
** Unset file-handler-alist during initialization
Another optimization from [[https://github.com/hlissner/doom-emacs/blob/develop/docs/faq.org#how-does-doom-start-up-so-quickly][Doom Emacs]].
#+BEGIN_SRC emacs-lisp
(defvar file-name-handler-alist-backup file-name-handler-alist)
(setq file-name-handler-alist nil)
(add-hook 'emacs-startup-hook
(lambda ()
(setq file-name-handler-alist file-name-handler-alist-backup)))
#+END_SRC
** Variables
#+BEGIN_SRC emacs-lisp
(setq vc-follow-symlinks t)
#+END_SRC
@ -1745,17 +1782,17 @@ Integrate Google calendar with org-mode:
* Mode line
* UI
Get rid of the janky buttons:
#+BEGIN_SRC emacs-lisp
#+BEGIN_SRC emacs-lisp :tangle ~/.emacs.d/early-init.el
(tool-bar-mode -1)
#+END_SRC
And the menu bar:
#+BEGIN_SRC emacs-lisp
#+BEGIN_SRC emacs-lisp :tangle ~/.emacs.d/early-init.el
(menu-bar-mode -1)
#+END_SRC
And the ugly scroll bars:
#+BEGIN_SRC emacs-lisp
#+BEGIN_SRC emacs-lisp :tangle ~/.emacs.d/early-init.el
(set-scroll-bar-mode nil)
#+END_SRC