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From: Bastien <bzg@altern.org>
To: nicholas.dokos@hp.com
Cc: Matt Lundin <mdl@imapmail.org>, Org Mode <emacs-orgmode@gnu.org>,
	mail@christianmoe.com,
	Carsten Dominik <carsten.dominik@gmail.com>
Subject: Re: Re: Slow movement in large buffers
Date: Wed, 16 Mar 2011 02:16:05 +0100	[thread overview]
Message-ID: <87r5a7uap6.fsf@gnu.org> (raw)
In-Reply-To: <6135.1300229813@alphaville.usa.hp.com> (Nick Dokos's message of "Tue, 15 Mar 2011 18:56:53 -0400")

Nick Dokos <nicholas.dokos@hp.com> writes:

> Given the evidence that Lawrence Mitchell provided however, it seems clear
> that most of the blame can be placed on overlays - no?

Yes, probably.

I've also experience slow motion in some big files of mine.

One factor was the use of the :ARCHIVE: tag.  I tried to remove this
tag, and things were fast again.  Another factor might be the use of
folded drawers and #+begin_src environments.

So I guess the problem boils down to 2 factors: the number of *nested
overlays*, and the number of lines in each.  How these factors interact
is hard to guess.

Instead of testing from org-issues.org (which is pretty messy), maybe 
we can have a testing/overlays.org file with a systematic structure?

#+begin_src org
* headline 1

** A subheading with 100 lines

lines ... lines (x 100)

* headline 2

** A subheading with 100 lines (x 100)
   :PROPERTIES:
   :LOCATION: Erewhon
   :END:

lines ... lines (x 100)

* headline 3

** A subheading with begin_src env and 100 lines (x 100)

  #+begin_src emacs-lisp
  (defun fixme ()
    "Some random defun"
    (message "This is not a message")
  #+begin_src

lines ... lines (x 100)

* headline 4

** subheading with archive tag and 100 lines :ARCHIVE: (x 100)

lines ... lines (x 100)
#+end_src

Matt, can you build and locally test such a file?  Then instrument
next-line when jumping from headline 1 to 2, to 3, to 4?

-- 
 Bastien

  parent reply	other threads:[~2011-03-16  1:16 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-15  3:25 Matt Lundin
2011-03-15  5:03 ` Carsten Dominik
2011-03-15 12:51   ` Matt Lundin
2011-03-15 10:58 ` Eric S Fraga
2011-03-15 12:54   ` Matt Lundin
2011-03-15 14:09     ` Eric S Fraga
2011-03-15 17:42       ` Carsten Dominik
2011-03-15 11:18 ` Carsten Dominik
2011-03-15 12:33   ` Lawrence Mitchell
2011-03-15 12:50   ` Matt Lundin
2011-03-15 14:15   ` Nick Dokos
2011-03-15 15:51     ` Matt Lundin
2011-03-15 17:39       ` Carsten Dominik
2011-03-15 22:00       ` Christian Moe
2011-03-15 22:56         ` Nick Dokos
2011-03-15 23:13           ` Christian Moe
2011-03-16  3:48             ` Nick Dokos
2011-03-16  1:16           ` Bastien [this message]
2011-03-18  0:37             ` Matt Lundin
2011-03-15 16:11 ` Chris Randle
2011-03-15 16:41   ` MidLifeXis at PerlMonks
2011-03-15 17:14   ` Scott Randby
2011-03-15 17:18     ` Erik Iverson
2011-03-15 17:38     ` Carsten Dominik
2011-05-11  0:41       ` Carmine Casciato
2011-05-12  6:59         ` Eric S Fraga

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