[Webkit-unassigned] [Bug 87466] [Forms] Rendering of select/optgroup/option is slow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=87466





--- Comment #2 from yosin at chromium.org  2012-05-27 21:18:54 PST ---
(In reply to comment #1)
> Duplicate of bug 43808?

Thanks Alexey for information. I marked that bug as resolved.

This issue is happened when we use optgroup and option elements.

Here is some performance test results:
(appendChild 3000 options)

1. optgroup and one option, e.g. <optgorup label="1"><option value="1">one</option></optgroup>
  124ms

2 optgroup and ten option, e.g. <optgorup label="1"><option>... 10 options
  410ms ** too slow **

3.optgroup only
  35ms

4. option
  139ms

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