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bug#21144: Performance problem with certain text editing operations (ema
From: |
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Subject: |
bug#21144: Performance problem with certain text editing operations (emacs 24.4.1) |
Date: |
Tue, 09 Aug 2016 21:10:39 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
tags 21144 moreinfo
quit
Aaron Sokoloski <asokoloski@gmail.com> writes:
> Hi folks,
>
> I've run into something that I can't figure out. Emacs 24.4.1 usually hangs
> for a short time (on the order of a second) when I do one of these things:
>
> 1) Kill a line
> 2) Kill a region
> 3) run kill-ring save
>
> It seems to be slow to do anything that copies text to the kill ring.
> Occasionally it seems like something I do (can't figure out what) makes it
> temporarily fast again, but
> then gradually slow down again until it takes about 1 second. It doesn't
> happen all the time, but when it happens it happens pretty reliably.
>
> The -q option does not make any difference. Font-lock-mode doesn't make any
> difference, nor does the size of the buffer seem to.
>
> Nothing exciting seems to show up under profiling -- the big cpu users are
> just the profiling stuff like the report. Also, setting debug-on-quit and
> pressing ctrl-g during the
> lag doesn't make the debugger pop up.
>
> However, I can't seem to reproduce the lag when running with -nw, so maybe
> it's something with the windowing.
>
> I'm running debian jesse, with awesome window manager version v3.4.15.
>
> As you can imagine, this is pretty distracting, so I'd appreciate any help
> anyone can provide!
Do you still see this with more recent Emacs? If yes, are you running
any kind of daemon that monitors the clipboard? The symptoms sound a
bit like http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24013 "[KDE/Plasma
5] Emacs 25.x uses up all memory and needs to be killed".
Also, if you can add the details that report-emacs-bug usually gives,
whether you're using gtk or lucid toolkit could be significant.
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