A log line is appended to fluorine:/a/mw-log/resourceloader.log whenever a ResourceLoader module definition is invalidated. When I grep the file for module names and rank by number of appearances, I notice that mobile.usermodule is at the top, and that the rate at which it is refreshed is an order of magnitude greater than the module in second place (user).
What is going on?
[fluorine:/a/mw-log] $ grep -Po '(?<=New definition hash for module )\S+' resourceloader.log | sort | uniq -c | sort -rn | head 15050 mobile.usermodule 1625 user 1198 ext.globalCssJs.user 158 site 93 user.groups 83 ext.math.mathjax.localization 60 ext.geshi.language.blitzbasic 55 skins.vector.headerjs.beta 55 mediawiki.skinning.content.parsoid 55 ext.geshi.language.bibtex