[Webkit-unassigned] [Bug 34649] Extremely slow DOM access compared to other non-webkit browsers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=34649


Chad <chadwhee at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |chadwhee at yahoo.com




--- Comment #3 from Chad <chadwhee at yahoo.com>  2011-08-13 02:37:50 PST ---
I'm seeing the same problem.

I've made some examples. These examples are the same content with different styling:

1) Normal scrolling. Solid borders and border-collapse:separate

 http://chadvonnau.com/projects/web/examples/webkit-table-bug/index.html

2) Slow scrolling. Solid borders and border-collapse:collapse

 http://chadvonnau.com/projects/web/examples/webkit-table-bug/bordercollapse.html

3) Very slow scrolling and beach ball of death.
   Semi-transparent RGBA borders and border-collapse:separate

 http://chadvonnau.com/projects/web/examples/webkit-table-bug/rgbaborders.html


I'm testing with Safari 5.1 and OS X 10.6.8 (+update) on my Late 2006 MacBook Pro.

Firefox 4 sees roughly equal performance on on all of those examples.
Safari 5.0 and earlier sees about the same performance on each example.
Chrome 13.0.7 has similar performance issues with these examples.

Here is another page that exhibits performance problems because of border-collapse:collapse

 http://panlex.org/u


This is the same bug on Google's bug tracker:

 http://code.google.com/p/chromium/issues/detail?id=34736

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