From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bastien <bzg@gnu.org>
Subject: Re: Logbook drawer entries make editing very slow
Date: Thu, 18 Apr 2013 12:56:50 +0200
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References: <87wqu3xvi6.fsf@hsdev.com>
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In-Reply-To: <87wqu3xvi6.fsf@hsdev.com> (Marcel van der Boom's message of
	"Wed, 20 Feb 2013 09:03:13 +0100")
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To: Marcel van der Boom <marcel@hsdev.com>
Cc: emacs-orgmode@gnu.org

Hi Marcel,

Marcel van der Boom <marcel@hsdev.com> writes:

> I'm using habit-style items a lot in my 'org' routine. A typical entry
> would look like this:
>
> #+BEGIN_SRC org
> *** TODO Do something daily                                                     
> SCHEDULED: <2013-02-20 wo .+1d>
> :LOGBOOK:
> - State "DONE"       from "TODO"       [2013-02-19 di 14:01]
> - State "DONE"       from "TODO"       [2013-02-17 zo 12:39]
> ...
> [lots of entries here]
> ...
> - State "DONE"       from "TODO"       [2010-02-25 Thu 13:51]
> - State "DONE"       from "TODO"       [2010-02-10 Wed 15:19]
> :END:
> :PROPERTIES:
> :STYLE: habit
> :LAST_REPEAT: [2013-02-19 di 14:01]
> :CREATED: <2011-03-25 vr 12:33>
> :END:
> ...Some description...
> #+END
>
> I have all habits in a file habits.org which is part of the
> 'org-agenda-files' list.
>
> When editing entries in the habits.org file, for example changing the
> header, emacs CPU using goes to 100% and every keystroke takes 5-10
> seconds.  

(org-at-item-p) can be very expensive, because it calls
(org-list-in-valid-context-p) which is also expensive and
clearly not optimized for every list movements.

I found out that the use is still acceptable for 1000-2000
list items, so I won't fix this right now, but something to
keep under the radar, yes.

In the meantime, cleaning out the logs sometimes is the only
suggestion I can make.

Thanks for reporting this,

-- 
 Bastien