Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8200723

Suppress rs_length and predicted_cards sampling during mixed gcs

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 11
    • Fix Version/s: 11
    • Component/s: hotspot
    • Subcomponent:
      gc
    • Resolved In Build:
      b11

      Description

      Related to JDK-8035557, one way to temporarily fix the issue with the wrong predictions of rs length and card prediction is to suppress sampling of these metrics during mixed gc.

      Since mixed gc does not use these, sampling during mixed gc only inflates these predictions for the young gc following mixed gcs.

      The disadvantage is that the prediction for this first young gc after the mixed gc might be off due to many leftover cards from the mixed phase.

        Attachments

          Issue Links

            Activity

              People

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

                Dates

                • Created:
                  Updated:
                  Resolved: