Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8076584

G1: Parallelism used for redirty logged cards needs better control

XMLWordPrintable

    • gc

      The attached plot shows the redirty logged cards time for the standard JDK9 (b45), same with the SemaphoreWait improvements being implemented for lower G1 pauses and SemaphoreWait improvements and redirty logged cards done serially. The SemaphoreWait work improves the results greatly but doing the work serially improves the pause an additional, significant amount.

        1. log.cms_dep_apr02.32g.15ms.820Live.S2L500.RedirtyMT1.RefProcMT1.semaphoreWait.finer.Xmn16g.g1
          39 kB
        2. log.cms_dep_apr9.32g.15ms.820Live.S2L500.RedirtyMT1.RefProcMT1.finer.Xmn16g.g1
          34 kB
        3. log.cms_dep_apr9.32g.15ms.820Live.S2L500.RedirtyMT1.RefProcMT1.finer.Xmn16g.g1
          34 kB
        4. log.cms_dep.32g.15ms.820Live.S2L500.2.finer.Xmn16g.g1
          34 kB
        5. log.cms_dep.32g.15ms.820Live.S2L500.semaphoreWait.4.finer.Xmn16g.g1
          34 kB
        6. log.cms_dep.32g.15ms.820Live.S2L500.serialRedirty.RefProcMT1.CTMTN.semaphoreWait.2.finer.Xmn16g.g1
          34 kB
        7. log.cms_dep.32g.15ms.820Live.S2L500.Xmn16g.g1
          3 kB
        8. redirty_logged_cards.png
          redirty_logged_cards.png
          225 kB
        9. redirty.cms_dep.15ms.820Live.S2L500.Xmn16g.g1.png
          redirty.cms_dep.15ms.820Live.S2L500.Xmn16g.g1.png
          38 kB

            iwalulya Ivan Walulya
            jmasa Jon Masamitsu (Inactive)
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved: