Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 11
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b12

      Description

      G1 may waste a serious amount of space during TLAB allocation because of the many region boundaries.

      I.e. since the TLAB size is fixed, G1 will, if TLAB size grows large waste a lot of space at the end of every region, because although the current allocation might fit, the TLAB may not.

      This may waste up to 50% of available memory, causing performance issues.

      Implement elastic TLABs like G1 already does for PLABs.

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              • Assignee:
                sjohanss Stefan Johansson
                Reporter:
                tschatzl Thomas Schatzl
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                • Created:
                  Updated:
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