[Webkit-unassigned] [Bug 106119] New: QtWebkit uses much higher CPU when playing flash video compared with other browsers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106119

           Summary: QtWebkit uses much higher CPU when playing flash video
                    compared with other browsers
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://www.rtve.es/noticias/directo/canal-24h/
        OS/Version: Windows 7
            Status: UNCONFIRMED
          Severity: Critical
          Priority: P1
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: sfcheng at gmail.com


I found qtwebkit-based application uses much higher CPU when rendering pages with streaming flash video compared with other browsers like IE. Here is an example: http://www.rtve.es/noticias/directo/canal-24h/

When I play it in the browser or fancybrowser demo shipped with QT, it consumes about 5% CPU when streaming the video. When the same video is played in IE, it is between 2% and 1%. My computer is quadcore i7-2600. On slower computer, the difference will be further magnified.

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