[Webkit-unassigned] [Bug 43933] New: Improved Table Hit Testing and Painting Performance

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=43933

           Summary: Improved Table Hit Testing and Painting Performance
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Tables
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: fsamuel at chromium.org
                CC: rjkroege at chromium.org, anicolao at chromium.org


Created an attachment (id=64260)
 --> (https://bugs.webkit.org/attachment.cgi?id=64260)
Table hit testing graph

Table hit testing performance in webkit is relatively poor especially when compared to Firefox. It is done currently by visiting every single cell in the table  until a cell is found that is interested in the hit. This can perform horribly as the table size gets larger. I have attached a log-log graph showing before and after performance of table hit testing as well as a comparison with firefox.

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