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  1. JDK
  2. JDK-8205353

SATB compaction hides unmarked objects until final-mark

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    • gc

    Description

      The SATB queue compaction feature can keep unmarked objects in the queue until the pause. This may results in very long "Finalize Mark" times.

      Verified for SPECjbb2015 (1.22s long Finalize Marks with Shenandoah, but G1 uses the exact same code), but also suspected the cause for Kitchensink/ReferenceStress spurious 7s+ long Finalize Mark (with G1)

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8079167 G1SATBBufferEnqueueingThresholdPercent == 0 should disable filtering

          • P5 - Cosmetic problem like misspelt words or misaligned text.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. JDK-8260497 Shenandoah: Improve SATB flushing

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

          Enhancement - null JDK-8226337 Simplify SATBMarkQueueSet completed buffer processing management

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

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              Unassigned Unassigned
              tschatzl Thomas Schatzl
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                Created:
                Updated: