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Re: The Emacs master is much slower than the emacs-27 branch.


From: Mattias Engdegård
Subject: Re: The Emacs master is much slower than the emacs-27 branch.
Date: Thu, 3 Dec 2020 21:59:39 +0100

3 dec. 2020 kl. 19.15 skrev Alan Mackenzie <acm@muc.de>:

> I've got pretty much up to date copies of both the master and the
> emacs-27 branches.
> 
> When I run my customary benchmark (see below) on master's src/xdisp.c in
> master, it's taking around 34s.  On emacs-27, it's taking 22s.

Confirmed on macOS (Mojave).

> That's a massive slowdown.  Does anybody know why this is happening?
> Should I raise a bug report?

Please do!




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