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  1. JDK
  2. JDK-8261503

Shenandoah: reconsider verifier memory ordering

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    • gc
    • b10

    Description

      Shenandoah verifier uses lots of atomic operations. Unfortunately, Hotspot's default for atomic operations is memory_order_conservative, which emits two-way memory fences around the CASes at least on AArch64 and PPC64.

      In most cases, that is excessive for verifier, and "relaxed" would do.

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              shade Aleksey Shipilev
              shade Aleksey Shipilev
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