Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8294775

Shenandoah: reduce contention on _threads_in_evac

    XMLWordPrintable

Details

    • gc
    • b24

    Description

      See here: https://mail.openjdk.org/pipermail/shenandoah-dev/2022-October/017494.html

      We can improve the scalability of the evac OOM protocol by striping the _threads_in_evac counter over multiple cache lines. This avoids the current bottleneck where every thread tries to CAS the same variable to enter/leave the protocol.

      Attachments

        Issue Links

          Activity

            People

              ngasson Nick Gasson
              ngasson Nick Gasson
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: