[Webkit-unassigned] [Bug 20831] Very slow <input type="search">. 100% CPU usage for each key press.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=20831





------- Comment #1 from john.engelhart at gmail.com  2008-09-15 16:13 PDT -------
While doing more web page hacking, it's become pretty clear that the following
combination causes a huge CPU spike (on a 1.5 GHz g4 powerbook):

Some kind of container (div).
A webkit transition, preferably one that infinitely loops.

And the one that really breaks the bank: Some element in the render hiearchy
that is a parent for the animating webkit element must have a background:
-webkit-gradient(linear, left top, left bottom, from(rgba(255,255,255,0.25)),
to(rgba(0,0,0,1.0))); (or equiv).

The use of rgba / alpha in the gradient doesn't seem to matter, all that's
needed is the gradient.

Hopefully this helps narrow things down.


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