[Webkit-unassigned] [Bug 104693] New: REGRESSION: Very poor performance on IE's Chalkboard benchmark

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=104693

           Summary: REGRESSION: Very poor performance on IE's Chalkboard
                    benchmark
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://ie.microsoft.com/testdrive/Performance/Chalkboa
                    rd/
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar, Regression
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: timothy_horton at apple.com
                CC: zimmermann at kde.org, krit at webkit.org


http://ie.microsoft.com/testdrive/Performance/Chalkboard/

A vague history of our performance on this test:

a) bad (15 seconds to completion, pretty jerky) before SVGImageCache (http://trac.webkit.org/changeset/99539)
b) sort of OK (5 seconds to completion, relatively smooth) after SVGImageCache, but pixelated.
c) absolutely horrific (hundreds of seconds to completion, completely stalling for seconds at a time) after Niko's fix to actually use the right image size. But not pixelated anymore. (http://trac.webkit.org/changeset/112229)

<rdar://problem/11769350>

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