[Webkit-unassigned] [Bug 40042] New: [Qt] Hovering the mouse cursor on a Flash content causes very high CPU load

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=40042

           Summary: [Qt] Hovering the mouse cursor on a Flash content
                    causes very high CPU load
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows XP
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ryuichi.kubuki at lunascape.co.jp


The affected environment is Flash 10.1.51.45 + Qt 4.7 Beta + Windows XP SP3 (Japanese).

[How to Reproduce]

1. Build and run browser.exe in the Qt demos
2. Extract the attached zip
3. Open .html with browser.exe
4. Hover the mouse cursor around the left side of the Flash content

[Actual Result]

CPU usage spikes to 50% (full load on 1 of 2 CPU cores)

[Expected Result]

A lot less CPU load



On Safari 4.0.5 in the same PC, it's under 10% load.

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