[Webkit-unassigned] [Bug 258808] Initialising many a/v players on Safari is done very inefficiently

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258808

Alexey Proskuryakov <ap at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Page Loading                |Media
                 CC|                            |aestes at apple.com,
                   |                            |ap at webkit.org,
                   |                            |eric.carlson at apple.com,
                   |                            |jer.noble at apple.com,
                   |                            |simon.fraser at apple.com,
                   |                            |zalan at apple.com

--- Comment #1 from Alexey Proskuryakov <ap at webkit.org> ---
Yes, this wikipedia page is very slow to load and to scroll.

It spends half of the time in layout trying to figure out if layers want to composite, and another half in JavaScript code under ensureMediaControls(), notably in a callout to WebCore::jsMediaControlsHostPrototypeFunction_base64StringForIconNameAndType().

I think that I've seen an earlier bug about slowness loading a page with many audio elements, but I cannot find it now.

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