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Refactor gc optimizations on startup

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Slightly smaller default gc-cons-threshold (and default
gc-cons-percentage), for less stuttering, and use most-postive-fixnum as
a ceiling.
This commit is contained in:
Henrik Lissner 2018-09-02 17:28:04 +02:00
parent 3d5c8ba279
commit 31bcac9a1e
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GPG key ID: 5F6C0EA160557395
1 changed files with 22 additions and 19 deletions
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39
init.el
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@ -27,35 +27,38 @@
;;
;;; License: MIT
(defvar doom-gc-cons-threshold (* 8 1024 1024)
"The default value to use for `gc-cons-threshold'.")
(defvar doom--file-name-handler-alist file-name-handler-alist)
(unless after-init-time
;; A big contributor to long startup times is the garbage collector, so we
;; up its memory threshold, temporarily and reset it later in
;; `doom|finalize'.
(setq gc-cons-threshold 402653184
gc-cons-percentage 1.0
;; consulted on every `require', `load' and various file reading
;; A big contributor to long startup times is the garbage collector, so we up
;; its memory threshold, temporarily and reset it later in
;; `doom|disable-startup-optimizations'.
(setq gc-cons-threshold most-positive-fixnum)
;; This is consulted on every `require', `load' and various file reading
;; functions. You get a minor speed up by nooping this.
file-name-handler-alist nil))
(setq file-name-handler-alist nil))
(defun doom|finalize ()
(defun doom|disable-startup-optimizations ()
"Resets garbage collection settings to reasonable defaults (if you don't do
this, you'll get stuttering and random freezes) and resets
`file-name-handler-alist'."
(setq file-name-handler-alist doom--file-name-handler-alist
gc-cons-threshold 16777216
gc-cons-percentage 0.15))
gc-cons-threshold doom-gc-cons-threshold)
(makunbound 'doom--file-name-handler-alist))
(add-hook 'emacs-startup-hook #'doom|disable-startup-optimizations)
(add-hook 'doom-reload-hook #'doom|disable-startup-optimizations)
(add-hook 'emacs-startup-hook #'doom|finalize)
(add-hook 'doom-reload-hook #'doom|finalize)
;; Ensure Doom is always running out of this file's directory
(setq user-emacs-directory (file-name-directory load-file-name)
;; In noninteractive sessions, we hope that non-byte-compiled files will
;; take precedence over byte-compiled ones, however, if you're getting odd
;; recursive load errors, it may help to set this to nil.
load-prefer-newer noninteractive)
(setq user-emacs-directory (file-name-directory load-file-name))
;; In noninteractive sessions, we hope that non-byte-compiled files will take
;; precedence over byte-compiled ones, however, if you're getting odd recursive
;; load errors, it may help to set this to nil.
(setq load-prefer-newer noninteractive)
;; Let 'er rip!
(require 'core (concat user-emacs-directory "core/core"))