Manual:$wgExpensiveParserFunctionLimit/de-formal

Details
Maximum number of calls per parse to expensive parser functions such as PAGESINCATEGORY. Expensive parser functions include:


 * (from )
 * / (a Magic Word)
 * (a Magic Word)
 * and when used with the optional argument to specify a different page
 * (a Magic Word)
 * Some Lua MediaWiki-related functions (see Lua reference manual), including  which can be used to manually mark a Lua code path as expensive.
 * (since 1.39)
 * Search for calls to find more wikitext features that are considered expensive.

A limit report for the current page can be found as a comment in the HTML source of the page. Even without saving, the count for any wikitext can be checked by checking the html-source of the preview page for that wikitext.