From 8525e85768eae433339a5f933f09baacd8e69640 Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Fri, 18 Aug 2023 00:38:06 +0200 Subject: emacs: Optimize limit vars --- .config/emacs/config.org | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/.config/emacs/config.org b/.config/emacs/config.org index 32f33c1..b66658a 100644 --- a/.config/emacs/config.org +++ b/.config/emacs/config.org @@ -102,12 +102,27 @@ directory; let’s throw it all in the cache directory instead. These are just some limits Emacs abides by as far as garbage-collection and process communication go. They’re pretty low by default though; any modern -system is capable of much higher. +system is capable of much higher. To improve startup performance the garbage +collection theshold is set to the max until Emacs is initialized. Additionally +the documentation for ~read-process-output-max~ gives us a hint at how large we +can set it: + +#+BEGIN_QUOTE + + On GNU/Linux systems, the value should not exceed + =/proc/sys/fs/pipe-max-size=. See pipe(7) manpage for details. + +#+END_QUOTE #+BEGIN_SRC elisp - (setq gc-cons-threshold (* 512 1-MiB) - read-process-output-max 1-MiB) + (setq gc-cons-threshold most-positive-fixnum) + (add-hook 'after-init-hook + (lambda () (setq gc-cons-threshold (* 512 1-MiB)))) + + (with-temp-buffer + (insert-file-contents "/proc/sys/fs/pipe-max-size") + (setq read-process-output-max (number-at-point))) #+END_SRC -- cgit v1.2.3