currently the <categorytree> tag disables parser cache. I was under the impression this was a big no-no from a performance standpoint (and that tag is used on high profile pages like the commons main page)

The extension has a config variable - $wgCategoryTreeDisableCache. Setting it to false will stop the extension from disabling cache, which is probably a good thing - thus I suggest setting that setting to false.

Anyways, if the fact <categorytree> calls $parser->disableCache() is a non-issue, please ignore this.

See also bug 30428

Version: unspecified
Severity: normal