[Webkit-unassigned] [Bug 235114] REGRESSION (iOS 15): Massive variation in microbenchmark results when tab returns to foreground

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Jan 12 09:31:44 PST 2022


https://bugs.webkit.org/show_bug.cgi?id=235114

Chris Dumez <cdumez at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark.lam at apple.com,
                   |                            |ysuzuki at apple.com

--- Comment #5 from Chris Dumez <cdumez at apple.com> ---
I can reproduce on macOS / Intel.

I just keep relaunching Safari and open https://tango-bravo.net/webkit-bug-235114/index.html. Sometimes, the math.random calls number is ~7k, sometimes the number is ~17k.

I am doing some initial investigation but this may be a JSC issue having to do with tiering up or not.

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