Angus M <anguscmelvi...@gmail.com> writes: > I'm trying to run a long Python code block (~4000 lines) in org mode. The > code is sandwiched between: > #+begin_src python > <python code block> > #+end_src > > It runs fine, but org mode becomes incredibly slow - when typing text there > is about a 10 second delay before the character appears on the screen. If I > reduce the number of lines of code in the block there is a noticeable > increase in speed. > > I am not using line numbers, and the delay is not ameliorated by turning off > fontification. > > If I add a semi-colon before #+begin_src, to comment it off (get rid of src > environment), then org mode returns to it's normal speed.
The best thing to do, now, is run the profiler: M-x profiler-start ... type one character (which takes 10 s to be rendered) M-x profiler-report Best regards, Seb -- Sebastien Vauban