From: John Wiegley <jwiegley@gmail.com>
To: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
Cc: mituharu+bug-gnu-emacs-mac@math.s.chiba-u.ac.jp, 11545@debbugs.gnu.org
Subject: bug#11545: 24.0.96-mac-2.92; Strange speed problem scrolling in C++ code
Date: Mon, 28 May 2012 18:05:15 -0500 [thread overview]
Message-ID: <m24nqzx5xw.fsf@gmail.com> (raw)
In-Reply-To: <m2hav7pdfi.fsf@gmail.com> (John Wiegley's message of "Wed, 23 May 2012 02:24:49 -0500")
>>>>> John Wiegley <jwiegley@gmail.com> writes:
>>>>>> YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp> writes:
>> With the Time Profiler in Instrument.app, I found that fontification
>> of CC Mode in Emacs 24 is much heavier and causes frequent GCs than
>> that in Emacs 23. Please try the following:
>>
>> 1. Start Emacs 24 Mac port with -Q (alternatively, pressing the
>> shift key.)
>> 2. M-x load-file PREFIX/share/emacs/23.4/lisp/progmodes/cc-fonts.elc
>> RTE.
>> 3. Replay scrolling a large C++ file.
>>
>> I'm not sure if this slowdown is intended or expected.
>
> Indeed, this makes the speed situation much better on Emacs 24.0.97.
I can now confirm that loading CC-Mode 5.32.3 into Emacs 23.4 causes the
identical speed issues that I was seeing with Emacs 24.0.97, so this is a
performance issue in the latest CC-Mode, not a bug in Emacs 24 or with
Mac-Port Emacs.
To the CC-Mode maintainers: is there a way to disable the slower, "more
correct" mode in the latest CC-Mode, and go back to the entirely sufficient
(for me) mode of previous versions?
Thanks,
John
next prev parent reply other threads:[~2012-05-28 23:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <m2d364ocwo.fsf@gmail.com>
[not found] ` <wlwr4bsioz.wl%mituharu@math.s.chiba-u.ac.jp>
[not found] ` <m2zk97qvpr.fsf@gmail.com>
[not found] ` <wlvcju737a.wl%mituharu@math.s.chiba-u.ac.jp>
2012-05-23 7:24 ` bug#11545: 24.0.96-mac-2.92; Strange speed problem scrolling in C++ code John Wiegley
2012-05-23 7:35 ` Andreas Schwab
2012-05-23 7:51 ` Glenn Morris
2012-05-23 8:15 ` Glenn Morris
2012-05-23 10:28 ` John Wiegley
2012-05-23 16:16 ` Eli Zaretskii
2012-05-23 22:27 ` John Wiegley
2012-05-25 21:45 ` Alan Mackenzie
2012-05-26 7:46 ` John Wiegley
2012-05-28 23:05 ` John Wiegley [this message]
2012-06-02 21:20 ` Alan Mackenzie
2012-06-11 13:31 ` bug#11545: " John Wiegley
2019-11-01 18:40 ` Stefan Kangas
2019-11-02 10:59 ` Alan Mackenzie
2019-11-02 11:08 ` Stefan Kangas
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