[Webkit-unassigned] [Bug 266171] [web-animations] compositing/layer-creation/scale-rotation-animation-overlap.html is a timeout on Sonoma

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=266171

--- Comment #3 from Antoine Quint <graouts at webkit.org> ---
We don't actually fail to get an `animationstart` event, this seems entirely tied to DOM performance.

With a debug build the call to makeDots() in the test takes about 5.5 seconds. Then it takes over 9 seconds for the `animationstart` event to be obtained. Then once we call notifyDone() it takes about 11 seconds in `TestRunner::notifyDone()` for the call to `injectedBundle.page()->dump()` to finish. Depending on how fast the system is, this ends up tallying up to over 30 seconds and for the test to time out.

With a release build, the entire test runs in about 200ms on the same hardware :)

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