[Webkit-unassigned] [Bug 38275] New: Making lots of setAttributeNS(null, prop, ...) calls is very slow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=38275

           Summary: Making lots of setAttributeNS(null, prop, ...) calls
                    is very slow
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cmarrin at apple.com


Created an attachment (id=54590)
 --> (https://bugs.webkit.org/attachment.cgi?id=54590)
Sample trace of Asteroids game

The game here:

    http://people.rit.edu/djp4372/SVGeroids/game.svg

is a simple asteroids clone which calls setAttributeNS to position the ship,
bullets and asteroids. The game is really slow and uses a lot of CPU. Sample
attached. Looks like it's doing a lot of GC. Seems like this could be optimized
quite a bit.

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