Hi Eric, thanks for looking into this providing a patch already!
> I've just pushed up a patch which should speed up the collection of > continued source blocks. Please let me know if the performance increase > is sufficient for your example, if not we can look at more dramatic > methods of optimization or possibly at making the collection of such > blocks conditional. The speed looks very good already! But now org-babel-expand-src-block (as well es the source block evaluation) seems not to expand the noweb references at all and more. Is that a problem only on my side? > One option to avoid this overhead could be to add the following > > #+PROPERTY: noweb no > > to the top of your Org-mode file. Since I heavily rely on the noweb references, this is not an option for me. Cheers, Andreas