RFR: 8319048: Monitor deflation unlink phase prolongs time to safepoint

[David Holmes]

On Fri, 3 Nov 2023 09:50:25 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>  Is there anything special happening during those benchmark runs?

I have no way to answer that. The benchmarks are run in our performance measurement system, which is just a black-box to me. I tell it what benchmarks to run, and point it to the two binaries and then I get a bunch of results. FWIW I see for baseline versus patched:

77.73± 1.65 | 122.95± 44.39  p = 0.001


but the results you pasted, if I am reading them right, indicate the baseline is ~2x better than patched: 2ns/op versus 4ns/op. ???

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PR Comment: https://git.openjdk.org/jdk/pull/16412#issuecomment-1794131799