Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8255234

ZGC: Bulk allocate forwarding data structures

    XMLWordPrintable

Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 16
    • 16
    • hotspot
    • gc
    • b22

    Description

      Allocation of forwarding data structures (ZForwarding/ZForwardingEntry instances) can generate a lot of calls to new/malloc if the number of pages in the relocation set is large. This can make the "Concurrent Select Relocation Set" phase long. By bulk allocating a single piece of memory and then placement new() all objects into that memory we can speed this phase up quite a bit.

      Attachments

        Issue Links

          Activity

            People

              pliden Per Liden (Inactive)
              pliden Per Liden (Inactive)
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: