GNU bug report logs - #15876
24.3.50; Highly degraded performance between rev 114715 and 115006

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Package: emacs;

Reported by: "Sebastien Vauban" <sva-news <at> mygooglest.com>

Date: Tue, 12 Nov 2013 15:34:02 UTC

Severity: normal

Merged with 24565, 24918

Found in versions 24.3.50, 25.1

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: "Sebastien Vauban" <sva-news <at> mygooglest.com>
Cc: Glenn Morris <rgm <at> gnu.org>, 15876 <at> debbugs.gnu.org
Subject: bug#15876: 24.3.50; Highly degraded performance between rev 114715 and 115006
Date: Tue, 19 Nov 2013 20:47:52 -0500

> --8<---------------cut here---------------start------------->8---
> ;; highlight trailing whitespaces in all modes
> (setq-default show-trailing-whitespace t)
> --8<---------------cut here---------------end--------------->8---

Can you try to compare the performance of revision 114849 and
revision 114848?  The difference between the two is that the region
highlighting was moved from C to Elisp.  This usually shouldn't affect
performance, but maybe there's some interaction with redisplay
that ends up disabling most optimizations?


        Stefan
This bug report was last modified 8 years and 168 days ago.

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