Steps to replicate the issue (include links if applicable):
When accessing https://en.wikipedia.org/wiki/List_of_mathematical_constants the server times out. None of the templating is filled in. The edit butten does show the page source, but he preview doesn't load.

I believe that the cause for the server timeout is that the page is too big and with too many seperate math elements.

This isn't as far as I understand a problem with mediawiki software, but I don't know where else to file this report.

I tried to add the wikipedia tag, but phabricator doesn't let me choose it. Filing this in a different report.