[Webkit-unassigned] [Bug 207154] REGRESSION (r254428): [ macOS wk1 ] inspector/canvas/recording-2d-full.html became slower, flakily times out

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=207154

Alexey Proskuryakov <ap at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[ macOS wk1 ]               |REGRESSION (r254428): [
                   |inspector/canvas/recording- |macOS wk1 ]
                   |2d-full.html is flaky       |inspector/canvas/recording-
                   |timing out                  |2d-full.html became slower,
                   |                            |flakily times out

--- Comment #4 from Alexey Proskuryakov <ap at webkit.org> ---
> This test has been a flaky timeout for all visible history on wk1 debug 

You may be referring to internal test results, where this test was failing on slower bots. But there is actually a sharp start around r254428, where LFC integration patches landed.

Enabling test times on the flakiness dashboard, I see a clear performance regression. It's not visible on release bots, but it's very clear on debug, ASan and GuardMalloc. I think that it's not just more complex assertions, but more memory allocations, which is why GuardMalloc suffered more.

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