Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8277736

G1: Allow forced evacuation failure of first N regions in collection set

    XMLWordPrintable

Details

    • gc
    • b26

    Description

      Currently, debug options of evacuation failure, like G1EvacuationFailureALotInterval and G1EvacuationFailureALotCount only config the ratio of objects failing evacuation, basically the distribution of objects failing evacuation is even among regions.

      JDK-8256265 is trying to improve parallelism in regions that failed evacuation, it'll be helpful if there is option to config the distribution of objects failing evacuation among regions, so implementation of JDK-8256265 could be profiled more precisely.

      This is to add the support and necessary vm options, and the implementation will be to select regions from start, i.e. not randomly, the motivation is to configure a more stable selection of evacuation failure regions, which will help verify the effect of JDK-8256265 implementation.

      Attachments

        Issue Links

          blocks

          Enhancement - null JDK-8256265 G1: Improve parallelism in regions that failed evacuation

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

          CSR - null JDK-8278035 G1: Allow forced evacuation failure of first N regions in collection set

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

          Enhancement - null JDK-8277851 G1: Allow random selection of forced evacuation failure of N regions in collection set

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

          JEP - Java Enhancement Proposal JDK-8276094 JEP 423: Region Pinning for G1

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

          Enhancement - null JDK-8256265 G1: Improve parallelism in regions that failed evacuation

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

          Commit Commit openjdk/jdk/bc6dce14

          Review Review openjdk/jdk/6561

          Activity

            People

              mli Hamlin Li
              mli Hamlin Li
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: