Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8280705

Parallel: Full gc mark stack draining should prefer to make work available to other threads

    XMLWordPrintable

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 19
    • Fix Version/s: 19
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc
    • Resolved In Build:
      b08

      Description

      Similar to G1 in JDK-8280396, Full gc mark stack handling threads may work on the overflow queue exclusively starving other threads.

      Bigramtester 20gb currently gives the following times for the first two full gcs on 5 runs:

      1) 6-9000ms (high variance)
      2) 3-4500ms (high variance)

      With the prototype changes:

      1) 4600ms (variance ~ 2%)
      2) 1500ms (variance ~ 1%)

        Attachments

          Issue Links

            Activity

              People

              Assignee:
              tschatzl Thomas Schatzl
              Reporter:
              tschatzl Thomas Schatzl
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: