JDK 11+ Parallel GC may shrink Java heap size below -Xms (MinHeapSize) due to adaptive size policy

Solution Unverified - Updated -

Issue

  • JDK 11+ Parallel GC may shrink Java heap size below -Xms (MinHeapSize) due to adaptive size policy
  • The java heap size can become lower than -Xms (MinHeapSize) under low load when Parallel GC is used on JDK 11+ under low load

Environment

  • OpenJDK
    • 11
    • 17
    • 21
  • Parallel GC

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