Emacs-23 awfully slow

Hi board.
Since I upgraded to emac-23.1, the thing is very slow.
Example:
I have a orgmode file opened, with several long sections (hundreds lines each) collapsed. When I move from one line to another (thus skipping several hundred lines), there is a clear lag.
Even worse, when I try to move through the file by keeping the down arrow pressed, the CPU usage instantly goes to 100% on one of my cores and emacs is unsuable for several seconds before the cursor appears at the end of the file.

No problem here running emacs 23.1-3 on very modest hardware (Asus
1000he/Atom chip).
My org-mode files are thousands of lines long and outline navigation
and the agenda view are instantaneous.
You could always try rebuilding emacs 23 via abs.
Also make sure you are running a recent version of org-mode
(preferably from the git repo). Org-mode's outline navigation was
recently optimized. I believe the version bundled with Emacs 23 does
not include this optimization.
(Even with the optimization, however, if your outline levels are
really deep and contain a lot of lines, you may experience some lag. I
generally try to limit myself to outlines that are 3-4 levels deep.
YMMV.)
Last edited by madalu (2009-08-11 15:42:45)

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