Things got very slow: profiler output

[William Denton]

I rebuilt Org and Emacs from the development trees and something is wrong, 
because some Org files I use regularly have become incredibly slow to use.  I 
rarely use the profiler and don't know what to make of what it says, but I 
opened a file and ran it while I moved around and expanded and collapsed some 
headings for a minute or so.  (It was so slow that it took me a minute to do 
what would usually take me a few seconds.)  I'll paste the results below.  Does 
that say anything useful?  There is a little LaTeX in the file but not much.

Any help on interpreting this would be welcome.  I can try reverting to an 
earlier Git commit tomorrow.

Bill

     Samples    %   Function
       73203  70% - redisplay_internal (C function)
       71496  68%  - jit-lock-function
       71488  68%   - jit-lock-fontify-now
       71472  68%    - jit-lock--run-functions
       71472  68%     - #<compiled 0x1baf5fbd9c5fbb3f>
       71472  68%      - font-lock-fontify-region
       71468  68%       - font-lock-default-fontify-region
       71436  68%        - font-lock-fontify-keywords-region
       71124  68%         - org-do-latex-and-related
       71124  68%            re-search-forward
         228   0%         + org-activate-folds
          16   0%         + org-fontify-meta-lines-and-blocks
          12   0%         + org-activate-footnote-links
           8   0%           org-activate-dates
           8   0%         + org-activate-links
           4   0%           org-do-emphasis-faces
           4   0%           org-fontify-drawers
           4   0%           org-raise-scripts
          28   0%        + font-lock-unfontify-region
           4   0%        + font-lock-extend-region-wholelines
           4   0%      text-property-any
       30951  29% + command-execute
          ...


--
William Denton
https://www.miskatonic.org/
Librarian, artist and licensed private investigator.
Toronto, Canada