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  1. JDK
  2. JDK-6672778

G1 should trim task queues more aggressively during evacuation pauses

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 7
    • Fix Version/s: 11
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Introduced In Build:
      beta
    • Introduced In Version:
      7
    • Resolved In Build:
      b12
    • CPU:
      generic
    • OS:
      generic

      Description

      During the work for 6622424, we took a decision to only trim the task queues after we've finished all root scanning, instead of more aggressively as it was done before. Just in case this causes performance problems (due to excessive overflows), we might want to revisit this approach. Opening this CR to track this.

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          Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8201313 Times of sub-phases of ext root scan may be larger than the sum of individual timings

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8204287 Phase timings not updated correctly after JDK-6672778

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8230706 Waiting on completion of strong nmethod processing causes long pause times with G1

          • P3 - Major loss of function.
          • Open

          Enhancement - null JDK-8224759 Investigate block splitting during heap root scan

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

            Activity

              People

              • Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                tonyp Tony Printezis
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                Dates

                • Created:
                  Updated:
                  Resolved:
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