From: Smith_RS <rsmithpv@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Odd slowness in grep and dired modes
Date: Thu, 20 Mar 2014 23:10:52 -0700 (PDT) [thread overview]
Message-ID: <3a2879e3-cb96-495c-a6a4-6bb790449477@googlegroups.com> (raw)
This is for NT Emacs 24.3.1 running on Windows 7.
I found a situation where NT Emacs will slow to a crawl and consume high CPU cycles, the common behavior is directory browsing in dired or file browsing in grep-mode where the mouse-over behavior is being used. I ran the profiler and saw that all the time is spent in mouse-fixup-help-message.
Steps to duplicate:
- Open dired on a directory with a non trivial number of files (20 or more).
- Run the mouse over the files without selecting anything, just let the mouse-over behavior happen.
- Do this with profiling turned on and observe thousands of calls to mouse-fixup-help-message.
Alternately:
- Use grep-mode to search for a string that occurs in a large number of files.
- Continue as above.
I ran with Procmon, there is no specific I/O or registry activity during this slowness that I can trace.
I tried this under Linux, I see the calls to mouse-fixup-help-message but it doesn't jack the CPU like on Windows.
Any thoughts or ways to debug this are appreciated, as always.
Thanks.
next reply other threads:[~2014-03-21 6:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-21 6:10 Smith_RS [this message]
2014-03-21 8:13 ` Odd slowness in grep and dired modes Eli Zaretskii
[not found] ` <mailman.17728.1395389591.10748.help-gnu-emacs@gnu.org>
2014-03-21 8:25 ` Smith_RS
2014-03-21 8:57 ` Eli Zaretskii
2014-03-21 14:39 ` Drew Adams
[not found] ` <mailman.17734.1395392229.10748.help-gnu-emacs@gnu.org>
2014-03-21 16:41 ` Smith_RS
2014-03-21 16:54 ` Eli Zaretskii
[not found] ` <mailman.17774.1395420855.10748.help-gnu-emacs@gnu.org>
2014-03-21 17:26 ` Smith_RS
[not found] ` <mailman.17763.1395412779.10748.help-gnu-emacs@gnu.org>
2014-03-21 17:09 ` Smith_RS
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