[wp-trac] [WordPress Trac] #32769: Customizer Menus: Setting sanitization innefficiencies resulting in severe performance slowdowns

[WordPress Trac]

#32769: Customizer Menus: Setting sanitization innefficiencies resulting in severe
performance slowdowns
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 Reporter:  westonruter   |       Owner:  westonruter
     Type:  defect (bug)  |      Status:  accepted
 Priority:  normal        |   Milestone:  4.3
Component:  Customize     |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:  performance
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Comment (by celloexpressions):

 I don't think we could get away with lazy-loading settings data as needed
 (assuming that would be an ajax call). With controls/the UI side it's
 usually easily handled within the time it takes the animation to complete,
 and scales seemingly linearly with the number of menu items as the
 controls are rendered from the template and inserted into the DOM. An ajax
 call would be much slower, so I'd want to see if we can find a good way to
 only do that if a menu is more than say 50 items.

 But 50k calls to the same function definitely sound wrong, and would
 probably be the better approach to fixing.

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Ticket URL: <https://core.trac.wordpress.org/ticket/32769#comment:5>
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