[Webkit-unassigned] [Bug 109630] New: Avoid updating timer heap when nothing changes

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Feb 12 16:38:19 PST 2013


https://bugs.webkit.org/show_bug.cgi?id=109630

           Summary: Avoid updating timer heap when nothing changes
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: koivisto at iki.fi


When the fire time of a Timer is changed we remove it from the timer heap and reinsert it. This is pretty slow. Turns out that in over 80% of cases the insertion position is the same as the original position. We can check if anything is actually going to change before doing this work.

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