[Webkit-unassigned] [Bug 39794] New: Inserting more than 30 000 nodes is very slow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=39794

           Summary: Inserting more than 30 000 nodes is very slow
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
               URL: http://hacks.mozilla.org/2010/05/better-performance-wi
                    th-lazy-frame-construction/
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: HasReduction
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rik at webkit.org


Created an attachment (id=57172)
 --> (https://bugs.webkit.org/attachment.cgi?id=57172)
Reduced testcase

The first test case in the linked page takes about 30s to insert 80 000 nodes. It took between 1s and 2s in Firefox and Opera (see comments).

While it's not a common use case, something is wrong if other browsers can do it so fast.

Note that this is not related to the perf optimizations mentioned.

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