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  1. JDK
  2. JDK-8258604

Use 'isb' instruction in SpinPause on linux-aarch64

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    • aarch64
    • linux

    Description

      Performance data for Neoverse N1 shows that `isb` can be used to emulate the x86 `pause`. It is more reliable than `yield` or a sequence of `nop`.

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          duplicates

          Enhancement - null JDK-8277137 Set OnSpinWaitInst/OnSpinWaitInstCount defaults to "isb"/1 for Arm Neoverse N1

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8278241 Implement JVM SpinPause on linux-aarch64

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Enhancement - null JDK-8186670 Implement _onSpinWait() intrinsic for AArch64

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              eastigeevich Evgeny Astigeevich
              eastigeevich Evgeny Astigeevich
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                Updated:
                Resolved: