Bug 156506
| Summary: | Scrolling on Github code viewer is not smooth | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Ryosuke Niwa <rniwa> |
| Component: | Layout and Rendering | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Normal | CC: | hyatt, jonlee, sabouhallawa, simon.fraser, thorton, webkit-bug-importer, zalan |
| Priority: | P2 | Keywords: | InRadar |
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
Ryosuke Niwa
Visit https://github.com/WebKit/webkit/blob/master/Source/WebCore/dom/Document.cpp on Safari Technology Preview and scroll on the first generation 15" Retina MBP. It feels very slow and shows a lot of flash tiles.
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| Add attachment proposed patch, testcase, etc. |
Ryosuke Niwa
white* tiles.
Simon Fraser (smfr)
Lots of time clipping under paintOutlineForFragments.
Radar WebKit Bug Importer
<rdar://problem/25684695>
Ryosuke Niwa
I wonder if the Github page is also mutating the DOM as we scroll?
Simon Fraser (smfr)
This is similar to bug 155728.
zalan
Each (source)line on that page is a <tr> with 2 <td>s in it. I bet it's slow because of some table inefficiency.
Dave Hyatt
This was fixed by the 157631 fix.
Jon Lee
*** This bug has been marked as a duplicate of bug 157631 ***