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  1. JDK
  2. JDK-8354517

Parallel: JDK-8339668 causes up to 3.7x slowdown in openjdk.bench.vm.gc.systemgc

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    • Icon: Bug Bug
    • Resolution: Unresolved
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    • None
    • 25
    • hotspot
    • gc
    • b08
    • 25
    • x86_64, aarch64
    • generic

      JDK-8339668 adopts PartialArrayState to consolidate marking stack in Full GC. This patch did however introduce performance regressions in openjdk.bench.vm.gc.systemgc.

      Listing the worst regressions:
      openjdk.bench.vm.gc.systemgc.DifferentObjectSizesArray.gc -98.99% (Linux x64)
      openjdk.bench.vm.gc.systemgc.DifferentObjectSizesHashMap.gc -93.64% (Linux x64)
      openjdk.bench.vm.gc.systemgc.OneBigObject.gc -372.00% (Linux aarch64)

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            jnorlinder Jonas Norlinder
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              Created:
              Updated: