GNU bug report logs - #20352
Factor 2 slow down of font-locking in c-mode

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Packages: emacs, cc-mode;

Reported by: Stefan Monnier <monnier <at> IRO.UMontreal.CA>

Date: Fri, 17 Apr 2015 01:42:01 UTC

Severity: normal

Found in version 25.0.50

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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Message #18 received at 20352-done <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 20352-done <at> debbugs.gnu.org, Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Subject: Re: Factor 2 slow down of font-locking in c-mode
Date: Mon, 16 May 2016 10:28:57 -0700

I just now ran Stefan's benchmark on emacs-25 (commit 
9ca5dbf947a7421d37b3e2d2bc6b8d2c9218bc65) and on my platform (Fedora 23 
x86-64) Emacs 25 is now a bit faster than Emacs 24.5, as the benchmark 
took about 29 s on Emacs 24.5 and about 27 s on Emacs 25. I used the 
Emacs 25 src/xdisp.c in both benchmarks.

Alan, I guess you fixed the performance problem at some point (thanks!). 
As it's listed as a bug blocking Emacs 25, I'm closing the bug report now.
This bug report was last modified 9 years and 86 days ago.

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