Re: Help speeding up Org iCal export

[Josh Moller-Mara]

I'm running into this issue now.

One thing I noticed is that if you have broken links (and
org-export-with-broken-links is t), org-id-update-id-locations will be
run for every broken link it finds.  This turns out to be quite slow and
unnecessary since no files will have changed in between
org-id-update-id-locations runs during export.

One hacky workaround is to temporarily disable
org-id-update-id-locations, like so:

(cl-letf (((symbol-function 'org-id-update-id-locations)
             (lambda (&optional files silent) (message "Not updating 
locations"))))
    (let ((org-export-with-broken-links t)
          (gc-cons-threshold 80000000))
      (org-icalendar-combine-agenda-files)))

The right solution would probably be to not have broken links in the
first place. :P
Or maybe org-id-update-id-locations could be debounced or cached in some way.

Best,
Josh