Re: [O] Slow movement in large buffers

[Carsten Dominik]

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