[Webkit-unassigned] [Bug 105526] New: Regression(r137700): Large regressions in number of bindings benchmarks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=105526

           Summary: Regression(r137700): Large regressions in number of
                    bindings benchmarks
           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: ggaren at apple.com, rniwa at webkit.org, fpizlo at apple.com


http://trac.webkit.org/changeset/137700 seems to have caused massive (>50%) performance regressions in a number of Bindings microbenchmarks:

Bindings/get-element-by-id
Bindings/get-elements-by-tag-name
Bindings/create-element

http://webkit-perf.appspot.com/graph.html#tests=[[3030063,2001,32196],[2863935,2001,32196],[2971082,2001,32196]]&sel=1355398469646,1355548767856.7356&displayrange=7&datatype=running

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