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Re: magit lags on macOS 12

From: Danny Freeman
Subject: Re: magit lags on macOS 12
Date: Mon, 18 Dec 2023 10:25:34 -0500

zhanghj <> writes:

> I'm using GNU Emacs on macOS.
> I remember that before Emacs 26, running magit in Emacs was slow because 
> Emacs called the child
> process using the 'fork' syscall.
> Later, emacs26 used 'vfork', and then it no longer stuttered.
> Now that I've upgraded my macOS to 12.7, I'm starting to see that magit is 
> starting to get sluggish
> again, about the same as it was before Emacs 26.
> I tried Emacs 27 and 29, both of which are rather sluggish. Why is that?

Magit is also slow for me on Emacs 29 running the latest OSX, but it's
difficult to determine why. I think part of the reason for me is all the
other software installed by my enterprise like virus scanners,
constantly running backups, the sorts of things I don't have much
control over.

Making sure Magit is using the version of git installed by apple/xcode
at /usr/bin/git (NOT the one from homebrew or other package managers)
seems to help with slowness. Git itself is pretty slow on OSX, but the
one apple provides seems to be the fastest.

Using apple's git won't completely resolve the slowness, but it may
help a little.

If you find another fix please post here because the speed of Emacs on
my macbook is almost unbearable.

Danny Freeman

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