emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
From: Carsten Dominik <carsten.dominik@gmail.com>
To: Eric S Fraga <e.fraga@ucl.ac.uk>
Cc: Matt Lundin <mdl@imapmail.org>, Org Mode <emacs-orgmode@gnu.org>
Subject: Re: Re: Slow movement in large buffers
Date: Tue, 15 Mar 2011 18:42:01 +0100	[thread overview]
Message-ID: <8D34911D-B334-4543-9D6F-4A3A34F27BCF@gmail.com> (raw)
In-Reply-To: <87fwqowk4v.fsf@ucl.ac.uk>


On 15.3.2011, at 15:09, Eric S Fraga wrote:

> Hello,
> 
> following up on this issue, I have just run into it again.  I'm editing
> a not very large document and suddenly things slowed down, mostly but
> not exclusively for "next-line":
> 
> --8<---------------cut here---------------start------------->8---
> next-line                                                     18          2.1547069999  0.1197059444
> previous-line                                                 19          0.4066669999  0.0214035263
> org-mode-flyspell-verify                                      16          5.299...e-05  3.312...e-06
> --8<---------------cut here---------------end--------------->8---
> 
> This happened when I started a new source code block (gnuplot, to be
> exact) but didn't type in the end_src line for a while.  The problem
> seems to be due to font-locking and it tries to font-lock the whole
> document initially.  When I eventually get around to typing the end_src
> line, it font-locks correctly but things are slow thereafter.  There
> seems to be some hysteresis loop in the code...

This sounds like a bug that needs to be fixed in the block fontifications,
maybe a limit for how far to search for the end line.  regular expressions
that match many lines need to be carefully constructed - there are possible
backtracking traps that can make the matching time scale as the number of
characters squared.

- Carsten

> 
> If I kill the buffer and reload the file, everything is fine.
> 
> --8<---------------cut here---------------start------------->8---
> next-line                                                     17          0.0655900000  0.0038582352
> previous-line                                                 17          0.0115249999  0.0006779411
> org-mode                                                      1           0.007178      0.007178
> org-fontify-meta-lines-and-blocks                             25          0.0022920000  9.168...e-05
> org-set-startup-visibility                                    1           0.001619      0.001619
> org-raise-scripts                                             25          0.0013889999  5.555...e-05
> --8<---------------cut here---------------end--------------->8---
> 
> Dramatic difference!
> 
> -- 
> : Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.0.50.1
> : using Org-mode version 7.5 (release_7.5.38.gf8c6.dirty)
> 

  reply	other threads:[~2011-03-15 17:42 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 [this message]
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
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.orgmode.org/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=8D34911D-B334-4543-9D6F-4A3A34F27BCF@gmail.com \
    --to=carsten.dominik@gmail.com \
    --cc=e.fraga@ucl.ac.uk \
    --cc=emacs-orgmode@gnu.org \
    --cc=mdl@imapmail.org \
    --subject='Re: Re: Slow movement in large buffers' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Code repositories for project(s) associated with this inbox:

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).