[Webkit-unassigned] [Bug 44681] New: Pegs CPU and becomes unusable when trying to play the game at http://tromey.com/Swirl/

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=44681

           Summary: Pegs CPU and becomes unusable when trying to play the
                    game at http://tromey.com/Swirl/
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://tromey.com/Swirl/
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gns at gnome.org


I'm filling this on JavaScriptCore, but it seems to be the case with every browser I have available to test here - Epiphany and Firefox go dead, Chromium says the tab is dead. This might be one of those cases in which only one process per tab is a real solution. Here's perf's output:

     81.04%  ./.libs/libwebkitgtk-3.0.so.0.0.1                                 GtkLauncher
                |          
                |--34.20%-- JSC::JSValue::get(JSC::ExecState*, unsigned int) const
                |          
                |--33.48%-- cti_op_get_by_val
                |          |          
                |           --100.00%-- JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, JSC::JSValue*)
                |          
                |--20.50%-- JSC::JSArray::getOwnPropertySlot(JSC::ExecState*, unsigned int, JSC::PropertySlot&)
                |          
                |--8.59%-- cti_op_eq
                |          |          
                |           --100.00%-- JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, JSC::JSValue*)
                |          
                |--2.66%-- JSC::ObjectPrototype::getOwnPropertySlot(JSC::ExecState*, unsigned int, JSC::PropertySlot&)
                 --0.57%-- [...]

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