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  1. JDK
  2. JDK-8186670 Implement _onSpinWait() intrinsic for AArch64
  3. JDK-8275728

Add simple Producer/Consumer microbenchmark for Thread.onSpinWait

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    • b24

      From https://mail.openjdk.java.net/pipermail/hotspot-dev/2021-August/054033.html:

      "a SynchronousQueue microbenchmark (you can find it in https://bugs.openjdk.java.net/browse/JDK-8267502).... The SynchronousQueue microbenchmark, which uses Thread.onSpinWait, got 2.9x improvement."

      Since jdk17 java.util.concurrent.SynchronousQueue has not been using Thread.onSpinWait. Because of this the microbenchmark shows no improvements.

      A microbenchmark for the approach used in jdk11 java.util.concurrent.SynchronousQueue can be added.

            eastigeevich Evgeny Astigeevich
            eastigeevich Evgeny Astigeevich
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