[Webkit-unassigned] [Bug 212757] Performance degraded from 10th May after users migrated to iOS 13.4 or up on Iphone Mobile Safari

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=212757

--- Comment #7 from Maciej Stachowiak <mjs at apple.com> ---
Answering my own question regarding domfomplete:

It's defined in Navigation Timing as being right before document.readyState is set to "complete":
https://w3c.github.io/navigation-timing/#dom-performancenavigationtiming-domcomplete

Which in turn happens right before firing the "load" event:
https://html.spec.whatwg.org/multipage/parsing.html#the-end:current-document-readiness-2

So basically this all suggests that, given the data here, there is a significant delay additional between the end of DOMContnetLoaded and the start of the load event.

https://twitter.com/paulcalvano/status/1268114491499261952

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