[Webkit-unassigned] [Bug 14917] New: 20x load performance regression on 700k table

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=14917

           Summary: 20x load performance regression on 700k table
           Product: WebKit
           Version: 522+ (nightly)
          Platform: PC
               URL: http://bugs.webkit.org/attachment.cgi?id=3234&action=vie
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        OS/Version: Windows XP
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: allen.sam at gmail.com


The existing attachment from a bug I filed two years ago (in the URL field
above) is basically a total disaster now in the performance realm. I haven't
tested on Mac but this 700k page shows horrible performance on Windows WebKit
(ToT and Safari 3.0.3). 

The behavior I am seeing is that WebKit uses about 20x more CPU time when
loading this page off of the network than it does when loading off of the hard
disk. (The times are over 3 seconds of CPU time from the network, and 0.15
seconds CPU time loaded from the disk.)

I do not know if this problem is specific to the Windows WebKit. I haven't
tested on Mac OS X. I have a fast Internet connection so the page should load
about as fast on the Internet as it does from the disk. I am using Vista and
haven't tested XP. 

The issue is with attachment 3234. As an aside, Safari crashed when I tried to
load this page in a new tab on one of the test runs, but I haven't been able to
reproduce that.


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