Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8245849

Shenandoah: defer mark updates for roots

    XMLWordPrintable

Details

    • Enhancement
    • Resolution: Won't Fix
    • P4
    • None
    • 8-shenandoah, 11-shenandoah, 14, 15
    • hotspot
    • gc

    Description

      Looking at init-mark root statistics and profiles, it seems we bottleneck on MarkBitMap CAS updates. Maybe we can just push the roots on the scan queue without marks, and then update MarkBitMap at very beginning of concurrent cycle.

      For example: http://cr.openjdk.java.net/~shade/8245849/8245849-poc.patch

      Attachments

        Activity

          People

            Unassigned Unassigned
            shade Aleksey Shipilev
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: