Is there some list or tool that identifies Wikipedia pages that are slow to parse? My interest is mainly in the context of Lua deployment. I would like to identify non-obvious templates that may be having an appreciable impact on performance. (As opposed to things like {{cite}}, where the performance problems are already well-known.) I don't suppose the database stores a "time for last parse" somewhere? On enwiki we've already made Lua conversions with most of the string templates, several formatting templates (e.g. {{rnd}}, {{precision}}), {{coord}}, and a number of others. And there is work underway on a number of the more complex overhauls (e.g. {{cite}}, {{convert}}). However, it would be nice to identify problematic templates that may be less obvious. -Robert Rohde aka Dragons_flight _______________________________________________ Wikitech-l mailing list Wikitech-l(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l

On enwiki we've already made Lua conversions with most of the string templates, several formatting templates (e.g. {{rnd}}, {{precision}}), {{coord}}, and a number of others. And there is work underway on a number of the more complex overhauls (e.g. {{cite}}, {{convert}}). However, it would be nice to identify problematic templates that may be less obvious.

Why would it be harmful for public wikis? Anyone can do this on an article-by-article basis by copying the source their own MediaWiki instances.

There's slow-parse.log, but it's private unless a solution is found for https://gerrit.wikimedia.org/r/#/c/49678/ https://wikitech.wikimedia.org/wiki/Logs

On 2013-03-07 4:06 PM, "Matthew Flaschen" <mflaschen(a)wikimedia.org> wrote: +1 . I have trouble imagining how making this public could be harmful. There are plenty of well known slow to parse pages already. There's also more than a couple of ways to convince mw to make slow queries (longer than the php time limit), we publically release detailed profiling data, etc. Well that sort of thing isnt exactly proclaimed to the world, its also not a secret. If someone wanted to find slow points on mediawiki, theres a lot worse things just floating around the internet than a slow to parse page list.