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  1. JDK
  2. JDK-8188773

PPC64 and s390: Fix UseMembar and enable ShareVtableStubs

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 10
    • Fix Version/s: 10
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b31
    • CPU:
      ppc, s390x

      Description

      On PPC64, we currently generate unnecessary fence instructions which make performance even worse.
      On s390, the signal handler needs a fix in order to work with -XX:+UseMember.
      In addition, switch on ShareVtableStubs in order to reduce code cache usage. Modern processors don't seem to benefit from having it off it since the predictors have become better.

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            Assignee:
            mdoerr Martin Doerr
            Reporter:
            mdoerr Martin Doerr
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              Updated:
              Resolved: