[Webkit-unassigned] [Bug 85155] New: REGRESSION(r115388): ~50% regression in DOM/Template, ~10% regression in Dromaeo/dom-traverse

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=85155

           Summary: REGRESSION(r115388): ~50% regression in DOM/Template,
                    ~10% regression in Dromaeo/dom-traverse
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: koivisto at iki.fi
                CC: oliver at apple.com, barraclough at apple.com


http://trac.webkit.org/changeset/115388 seems to have had caused improbably large changes in the result of several http://webkit-perf.appspot.com/ tests

~50% regression in DOM/Template. This is visible on Lion and Qt bots (which all use JSC):

Lion: http://webkit-perf.appspot.com/graph.html#tests=[[110,2001,32196]]&sel=1335478018713.1335,1335511830796.091,0,40&displayrange=7&datatype=running
Qt: http://webkit-perf.appspot.com/graph.html#tests=[[110,2001,957069]]&sel=1335436428985.3481,1335524776685.9792,0,40&displayrange=7&datatype=running

~10% regression in Dromaeo/dom-traverse on Lion bot only:

http://webkit-perf.appspot.com/graph.html#tests=[[40020,2001,32196]]&sel=1335453053856.2793,1335524108065.345,0,3000&displayrange=7&datatype=running

On the other hand this appears to be a ~50% progression in Bindings/event-target-wrap from the same change on Lion bot only:

http://webkit-perf.appspot.com/graph.html#tests=[[8062,2001,32196]]&sel=1335464925822.3901,1335519506679.2725,0,1500&displayrange=7&datatype=running

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