Carsten Dominik <carsten.domi...@gmail.com> wrote: > > 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 > >
FWIW, I opened org-issues.org and followed Matt's lead: at first, I got almost instant response going from Other to Closed (using arrow-down) and a slight hesitation (< 0.5s) going from Other to the previous headline (Development Tasks). After noodling around for a while (including the motions that Eric F. suggested and getting no delays there), I tried it again and could discern no delay going either way. And I do run flyspell in org buffers. This is on a fairly recent vintage laptop with an i7 quad core processor (2.67GHz) and 4G of memory. That probably explains some of the difference I see. Matt, what kind of hardware are you using? Nick