As an MWE, I can test with "emacs -Q" and the following org file:
#+PROPERTY: header-args :eval never-export # (setq org-export-use-babel t) #+BEGIN_SRC emacs-lisp :results none (org-babel-do-load-languages 'org-babel-load-languages '((shell . t))) #+END_SRC #+BEGIN_SRC sh :results org raw for i in $(seq 200); do echo "" echo "#+BEGIN_SRC sh :results output :exports results" echo "echo 'hello, world'" echo "#+END_SRC" echo "#+RESULTS:" echo ": goodbye" done #+END_SRC #+RESULTS: Execute the first code block to allow execution of the second. Execute the second code block to generate 200 more. Export. It takes ~6 seconds on my machine, which seems long but is bearable. Based on the profiling, I think the reason it takes 1 minute is because the code blocks use <<noweb>> blocks?. I can verify this with the following MWE: #+PROPERTY: header-args :eval never-export # (setq org-export-use-babel t) #+NAME: foo #+BEGIN_SRC sh :results verbatim ls #+END_SRC #+RESULTS: #+NAME: bar #+BEGIN_SRC sh :results verbatim :noweb yes <<foo>> #+END_SRC #+RESULTS: #+NAME: baz #+BEGIN_SRC sh :results verbatim :noweb yes <<bar>> #+END_SRC #+RESULTS: Repeat the BAZ block with the <<bar>> about 100 times and export this, and it takes a long time. I killed it after ~30 seconds, because I think I have my evidence that :noweb yes is the culprit for the slow export. On Tue, Jun 12, 2018 at 11:15 PM Ken Mankoff <mank...@gmail.com> wrote: > > On Tue, Jun 12, 2018 at 11:07 PM Berry, Charles <ccbe...@ucsd.edu> wrote: > >> >> > On Jun 12, 2018, at 12:41 PM, Ken Mankoff <mank...@gmail.com> wrote: >> > >> > Hi Chuck, >> > >> > It looks fine to me. I see: >> > >> > Name: fig:foo >> > Lang: python >> > Properties: >> > :header-args :eval never-export >> > :header-args:python nil >> > Header Arguments: >> > :cache no >> > :eval never-export >> > :exports results >> > :hlines no >> > :noweb yes >> > :results file replace >> > :session discharge_ts >> > :tangle no >> > >> > >> >> And still the src blocks execute? >> >> > No. The source blocks never execute. It just takes an entire minute to > export the file with 200 source blocks. If they executed it would probably > take a few hours. > > -k. >
