[Webkit-unassigned] [Bug 119230] [CSS Regions] Selection performance

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=119230


Zoltan Horvath <zoltan at webkit.org> changed:

           What    |Removed                     |Added
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                 CC|                            |zoltan at webkit.org




--- Comment #3 from Zoltan Horvath <zoltan at webkit.org>  2013-07-30 10:48:07 PST ---
(In reply to comment #2)
> In trunk the performance of the selection in documents with CSS Regions seems better than in normal documents, I guess that the reason is that when you're selecting different flow threads the execution enter in the diff at RenderView::setSelection() related to the flow threads (see http://trac.webkit.org/browser/trunk/Source/WebCore/rendering/RenderView.cpp#L728). However, without that if (patch for bug #105641) the performance in documents with CSS Regions seems worse.

Yeah, it's because no real selection is happens in regions case when you select content over different regions, so we can't compare the performance until it's fixed. 
It's good to see perf-tests on this area. I think it would be nice to contribute them to the perftests when bug #106817 gets fixed.

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