Re: Why navigating in Org mode is so slow in overview mode?

[Nicolas Goaziou <mail@nicolasgoaziou.fr>]

Gregor Zattler <telegraph@gmx.net> writes:

> Now I think I found something specific.  I do open the org-mode
> file in question with #+STARTUP: showeverything because otherwise
> it’s slow.  Today I discovered org-goto.  This presents the
> buffer in overview mode.  So I started the profiler, started
> org-goto and typed 11 letters in order to jump to a heading.
> This takes quite some time while my notebooks fan is making noise
> and Emacs uses 100% cpu according to htop.
>
> I did this two times with the same org-mode file:
>
> - with Org-mode version 8.3beta (release_8.3beta-1291-gd6e601 @
>   /home/grfz/src/org-mode/lisp/) on GNU Emacs 25.0.50.4
>   (i686-pc-linux-gnu, GTK+ Version 3.14.5) of 2015-07-17 on boo
>
> - with Org-mode version 8.2.10 (release_8.2.10 @
>   /usr/local/stow/emacs-snapshot/share/Emacs/25.0.50/lisp/org/)
>   on the same version of Emacs.
>
> I do not know how to read these reports, but to me it seems, that
> most of the cpu cycles are used by org-context, org-end-of-item,
> org-list-struct and org-list-context.  The memory reports do not
> seem to be of interest but I attach them for the sake of
> completeness.

I removed a call to `org-context' in
985420eceb3661aae8b1caafc95e959ab12ad1cb. Does it fix your problem?

For the record, `org-context' predates Org Elements and should
ultimately be removed from the code base.

Regards,