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  1. JDK
  2. JDK-8236926

Concurrently uncommit memory in G1

    Details

    • Type: Enhancement
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 15
    • Fix Version/s: tbd
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc

      Description

      Shrinking the heap by uncommitting regions in the safepoint takes a noticeable amount of time, particularly for large shrinks.

      An alternative would be to move the slow part, i.e. the actual uncommit, into a concurrent operation.

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            • Assignee:
              Unassigned
              Reporter:
              tschatzl Thomas Schatzl
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              • Created:
                Updated: