From mboxrd@z Thu Jan  1 00:00:00 1970
From: Carsten Dominik <carsten.dominik@gmail.com>
Subject: Re: Slow movement in large buffers
Date: Tue, 15 Mar 2011 12:18:51 +0100
Message-ID: <17242340-A14F-495A-B144-20C96D52B620@gmail.com>
References: <87d3ltjc8x.fsf@fastmail.fm>
Mime-Version: 1.0 (Apple Message framework v1082)
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from [140.186.70.92] (port=36818 helo=eggs.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1PzSH9-0003wz-QI
	for emacs-orgmode@gnu.org; Tue, 15 Mar 2011 07:18:56 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <carsten.dominik@gmail.com>) id 1PzSH8-0002Kk-Oh
	for emacs-orgmode@gnu.org; Tue, 15 Mar 2011 07:18:55 -0400
Received: from mail-yi0-f41.google.com ([209.85.218.41]:34357)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <carsten.dominik@gmail.com>) id 1PzSH8-0002KV-MO
	for emacs-orgmode@gnu.org; Tue, 15 Mar 2011 07:18:54 -0400
Received: by yib2 with SMTP id 2so247226yib.0
	for <emacs-orgmode@gnu.org>; Tue, 15 Mar 2011 04:18:53 -0700 (PDT)
In-Reply-To: <87d3ltjc8x.fsf@fastmail.fm>
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/emacs-orgmode>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
To: Matt Lundin <mdl@imapmail.org>
Cc: Org Mode <emacs-orgmode@gnu.org>


On Mar 15, 2011, at 4:25 AM, Matt Lundin wrote:

> I've been navigating the org-issues file (14000+ lines) and have found
> movement within the file to be fairly slow. Sometimes Emacs will lock up
> for several seconds.
> 
> For instance, to move from the level one heading "* Other" to "* Closed
> issues" when the outline is folded takes over three seconds:
> 
> --8<---------------cut here---------------start------------->8---
> next-line     1           3.015289      3.015289
> --8<---------------cut here---------------end--------------->8---
> 

Wow, this is really bad.
Could you use elp and instrument org, outline,
and font-lock, and do that motion and report
the results?

> In my experience, the maximum workable size of org files is around
> 10,000 lines. Beyond that, Emacs starts to spin its wheels.

Not good at all.

- Carsten

> 
> Do others have the same experience? If so, does anyone have any tips on
> how to diagnose this further?
> 
> (insert "\n" emacs-version)
> 23.3.1
> 
> (insert "\n" org-version)
> 7.5
> 
> Best,
> Matt
> 
> 
> 

- Carsten