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  1. JDK
  2. JDK-8200545

Improve filter for enqueued deferred cards

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    • gc
    • b21

    Description

      In JDK-8197928 we introduced a filter to not enqueue deferred cards for regions we do not track the remembered sets for during gc based on whether the target region. This has been a very simple and presumably slow filter.

      Do some more improvements / tests to see whether this can and should be improved.

      One suggestion is to use a per-region array with flags indicating whether this region has a remembered set.

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          duplicates

          Enhancement - null JDK-8067920 Rename InCSetState to something more understandable

          • P5 - Cosmetic problem like misspelt words or misaligned text.
          • Closed
          relates to

          Enhancement - null JDK-8213108 Improve work distribution during remembered set scan

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

          Enhancement - null JDK-8227739 Merge cost predictions for scanning cards and log buffer entries

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8225418 G1: region attribute remembered set state disagrees with actual remembered set state

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed

          Enhancement - null JDK-8197928 Only enqueue deferred cards with references into regions that have a tracked remembered set during GC

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

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              tschatzl Thomas Schatzl
              tschatzl Thomas Schatzl
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                Created:
                Updated:
                Resolved: