[Webkit-unassigned] [Bug 180249] The GC load balancer should not rely on a global mutex

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=180249

--- Comment #3 from Filip Pizlo <fpizlo at apple.com> ---
(In reply to Ryosuke Niwa from comment #2)
> I guess it would be useful to know how much wall time is spent in GC during
> Speedometer.

I don’t have a number, but in the past it has responded to GC optimizations and regresssions about the same way as the average of other JS benchmarks.  I just got a 1% Speedometer speedup from doing something else to the GC. 

“Time spent in GC” is not an easily-defined number because the GC is concurrent.

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