[Webkit-unassigned] [Bug 30055] Bad DOM performance in large SVG files

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=30055





--- Comment #36 from Dirk Schulze <krit at webkit.org>  2009-12-30 04:22:13 PST ---
(In reply to comment #35)
> (In reply to comment #34)
> > RenderPath is SVG only.
> I meant that maybe another componet will use RenderPath in the future, but
> thats not a real reason.
> 
> Moving it to prepareToRenderSVGContent won't prevent _unnecessary_
> paintInfo.context->save(), concatCTM(...), restore() and so on.
> It should be done as early as possible! Iterating over _all_ items, even if
> only one pixel changed, is already not very performant. (checking which items
> need a repaint might be even more cpu consuming)

Can you please upload a new patch with a link to the bugreport Changelog and
the title of the bug? There shouldn't be Oops'es in a Changelog. Please write
why it is not possible to test the speed improvement and I think we can commit
it.

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