[webkit-reviews] review denied: [Bug 198382] REGRESSION (r245396): Page load time performance regression : [Attachment 370968] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has denied Ali Juma
<ajuma at chromium.org>'s request for review:
Bug 198382: REGRESSION (r245396): Page load time performance regression
https://bugs.webkit.org/show_bug.cgi?id=198382

Attachment 370968: Patch

https://bugs.webkit.org/attachment.cgi?id=370968&action=review




--- Comment #7 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
Comment on attachment 370968
  --> https://bugs.webkit.org/attachment.cgi?id=370968
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=370968&action=review

> Source/WebCore/dom/Document.cpp:336
> +#if ENABLE(INTERSECTION_OBSERVER)
> +static const Seconds intersectionObserversInitialUpdateDelay { 500_ms };
> +#endif

Rather than IntersectionObserver having its own delay, we should piggy-back off
the existing painting-delayed-during-page-load mechanisms (layer tree
freezing).