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  1. JDK
  2. JDK-8212084

Implement UseGCOverheadLimit for G1

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    Details

    • Type: Enhancement
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: tbd
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc

      Description

      As G1 does not instantiate the AdaptiveSizePolicy class, these JVM flags are no-ops for G1:
      UseGCOverheadLimit
      GCTimeLimit
      GCHeapFreeLimit

      UseGCOverheadLimit and tuning these flags is an effective way to prevent GC thrashing by throwing OOME early. Production users using other garbage collectors have already relied on UseGCOverheadLimit. It is desirable to make UseGCOverheadLimit also work in G1.

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          is blocked by

          Enhancement - null JDK-8212206 Refactor AdaptiveSizePolicy to separate out code related to GC overhead

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

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              Assignee:
              manc Man Cao
              Reporter:
              manc Man Cao
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                Dates

                Created:
                Updated: