GNU bug report logs - #38619
Byte compilation of Emacs autoloads

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Message #14 received at 38619 <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Pierre Neidhardt <mail <at> ambrevar.xyz>
Cc: 38619 <at> debbugs.gnu.org
Subject: Re: [bug#38619] Byte compilation of Emacs autoloads
Date: Thu, 27 Feb 2020 16:53:52 -0500

[Message part 1 (text/plain, inline)]

Hello Pierre,

Pierre Neidhardt <mail <at> ambrevar.xyz> writes:

I've now tested this change with the extensive manifest (attached).

I've built two profiles, like this:

(before change)
./pre-inst-env guix package -m emacs-pkg.txt -p /tmp/emacs-ref

(after change)
./pre-inst-env guix package -m emacs-pkg.txt -p /tmp/emacs-byte-compiled

Then proceeded to benchmark them like:

--8<---------------cut here---------------start------------->8---
env -i sh -c "source /tmp/emacs-ref/etc/profile && time emacs --batch --eval '()'"
--8<---------------cut here---------------end--------------->8---

Which returned:

--8<---------------cut here---------------start------------->8---
Loading /gnu/store/ipfaivbqjxfnda970w558vpihd84lqwi-profile/share/emacs/site-lisp/treepy-autoloads.el (source)...
Loading /gnu/store/ipfaivbqjxfnda970w558vpihd84lqwi-profile/share/emacs/site-lisp/ts-autoloads.el (source)...
Loading /gnu/store/ipfaivbqjxfnda970w558vpihd84lqwi-profile/share/emacs/site-lisp/tuareg-autoloads.el (source)...
Eager macro-expansion failure: (file-missing "Searching for program" "No such file or directory" "git")
Searching for program: No such file or directory, git

real    0m0.406s
user    0m0.361s
sys     0m0.044s
--8<---------------cut here---------------end--------------->8---

Now with the patches here:
--8<---------------cut here---------------start------------->8---
Loading /gnu/store/l09fascj5xjhbgi3nzc1bhrprdy44y9g-profile/share/emacs/site-lisp/treepy-autoloads...
Loading /gnu/store/l09fascj5xjhbgi3nzc1bhrprdy44y9g-profile/share/emacs/site-lisp/ts-autoloads...
Loading /gnu/store/l09fascj5xjhbgi3nzc1bhrprdy44y9g-profile/share/emacs/site-lisp/tuareg-autoloads.el (source)...
Eager macro-expansion failure: (file-missing "Searching for program" "No such file or directory" "git")
Searching for program: No such file or directory, git

real    0m0.287s
user    0m0.251s
sys     0m0.036s
--8<---------------cut here---------------end--------------->8---

That's a decent speedup :-)

I'll push this to master shortly.

Maxim

[emacs-pkg.txt (text/plain, attachment)]

[0001-gnu-emacs-Byte-compile-the-site-lisp-directory.patch (text/x-patch, attachment)]

[0002-emacs-build-system-Byte-compile-the-autoload-files.patch (text/x-patch, attachment)]

[0003-gnu-emacs-Fix-comment.patch (text/x-patch, attachment)]

[0004-gnu-emacs-cl-generic-Disable-byte-compilation-of-its.patch (text/x-patch, attachment)]

[0005-gnu-emacs-sly-macrostep-Remove-the-enable-autoloads-.patch (text/x-patch, attachment)]

[0006-gnu-emacs-sly-quicklisp-Remove-the-enable-autoloads-.patch (text/x-patch, attachment)]

[0007-gnu-emacs-sly-named-readtables-Disable-byte-compilat.patch (text/x-patch, attachment)]

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