[Webkit-unassigned] [Bug 262192] A GitHub project page with embedded SVG takes an extremely long time to load

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=262192

--- Comment #3 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
Lots of time under:
     2404 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&)  (in WebCore) + 4960  [0x61767b2b0]
       2404 WebCore::LegacyRenderSVGRoot::layout()  (in WebCore) + 1094  [0x6178bfe86]
         2404 WebCore::SVGRenderSupport::layoutChildren(WebCore::RenderElement&, bool)  (in WebCore) + 706  [0x6178a03d2]
           2404 WebCore::LegacyRenderSVGContainer::layout()  (in WebCore) + 269  [0x6178b5a6d]
             2404 WebCore::SVGRenderSupport::layoutChildren(WebCore::RenderElement&, bool)  (in WebCore) + 706  [0x6178a03d2]
               2402 WebCore::RenderSVGText::layout()  (in WebCore) + 1309  [0x61558439d]
               ! 2398 WebCore::SVGTextMetricsBuilder::walkTree(WebCore::RenderElement&, WebCore::RenderSVGInlineText*, WebCore::MeasureTextData*)  (in WebCore) + 127  [0x6178b3b4f]
               ! : 2329 WebCore::SVGTextMetricsBuilder::walkTree(WebCore::RenderElement&, WebCore::RenderSVGInlineText*, WebCore::MeasureTextData*)  (in WebCore) + 127  [0x6178b3b4f]
               ! : | 2279 WebCore::SVGTextMetricsBuilder::walkTree(WebCore::RenderElement&, WebCore::RenderSVGInlineText*, WebCore::MeasureTextData*)  (in WebCore) + 92  [0x6178b3b2c]
               ! : | + 1997 WebCore::SVGTextMetricsBuilder::measureTextRenderer(WebCore::RenderSVGInlineText&, WebCore::MeasureTextData*)  (in WebCore) + 1358  [0x6178b31ce]
               ! : | + ! 1404 WebCore::WidthIterator::advance(unsigned int, WebCore::GlyphBuffer&)  (in WebCore) + 188  [0x6174737cc]
               ! : | + ! : 1098 WebCore::WidthIterator::advanceInternal<WebCore::Latin1TextIterator>(WebCore::Latin1TextIterator&, WebCore::GlyphBuffer&)  (in WebCore) + 4011  [0x617474c7b]
               ! : | + ! : | 1054 WebCore::WidthIterator::commitCurrentFontRange(WebCore::AdvanceInternalState&)  (in WebCore) + 963  [0x6174722d3]

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