Open Bug 1106424 Opened 11 years ago Updated 3 years ago

Very laggy moving mouse over azimuth-distance map (very long paths) due to slow stroke hit-testing

Categories

(Core :: SVG, defect)

Product:
Core
Component:
SVG
Type:
defect

Tracking

()

People

(Reporter: jwatt, Unassigned)

References

(
URL
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Details

(Keywords: perf, Whiteboard: [hit-testing])

We are not nearly as responsive as Chrome when mousing around on the following, especially on Windows: http://www.jasondavies.com/maps/azimuth-distance/ Profiling shows us spending a lot of time hit-testing (40% of the profile under nsSVGPathGeometryFrame::GetFrameForPoint).
Specifically we're spending a lot of time under PathSkia::StrokeContainsPoint. Here's a profile: https://perfht.ml/2mYClRE
Summary: Slow on azimuth-distance map → Very laggy moving mouse over azimuth-distance map (very long paths) due to slow stroke hit-testing
Severity: normal → S3
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