https://bugzilla.wikimedia.org/show_bug.cgi?id=64709
Bug ID: 64709
Summary: ve.ce.ProtectedNode.prototype.onProtectedSetup is a
performance hog
Product: VisualEditor
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: General
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Web browser: ---
Mobile Platform: ---
Running JavaScript profiling on both desktop and mobile the majority of time is
spent in jQuery.extend.css - the majority of which seems to be caused by
ve.ce.ProtectedNode.prototype.onProtectedSetup
On mobile this seems to be even more severe.
In desktop 7.9% of execution time to load VisualEditor was spent in
jQuery.extend.css - this was the most heavy function. In mobile it was also the
most heavy - however in mobile a whopping 23.76% of time was spent in
jQuery.extend.css
Stubbing out the contents of the foreach loop
this.$element.add( this.$element.find( '*' ) ).each( function () {
seems to remedy this problem.
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