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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Redisplay slower in Emacs 28 than Emacs 27
Date: Mon, 07 Dec 2020 18:16:52 +0200
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To: Gregory Heytings <ghe@sdf.org>
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> Date: Mon, 07 Dec 2020 15:28:18 +0000
> cc: emacs-devel@gnu.org
> From: Gregory Heytings via "Emacs development discussions." <emacs-devel@gnu.org>
> 
> What is also odd is that the benchmark does not load any image: it loads 
> the "xdisp.c" file and scrolls down until EOF.

It could be because of the images we show in the tool bar, or the
bitmaps on the fringes.