Details

    • Subcomponent:
      gc
    • Resolved In Build:
      b45

      Backports

        Description

        JDK-8038423 introduced a G1 specific virtual space manager. It does not implement the AlwaysPreTouch feature, simply ignoring it.

        This causes some workload (e.g. Specjbb2005 with 120G heap) have a very long first full gc with large sys time.

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            jcoomes John Coomes added a comment -
            ILW = H (regression) L (AlwaysPreTouch is used infrequently) H (no workaround) -> p2. However, this affects performance only, not correctness and should only be seen during one gc over the lifetime of the JVM, so p3 is appropriate.
            Show
            jcoomes John Coomes added a comment - ILW = H (regression) L (AlwaysPreTouch is used infrequently) H (no workaround) -> p2. However, this affects performance only, not correctness and should only be seen during one gc over the lifetime of the JVM, so p3 is appropriate.
            Hide
            dfazunen Dmitry Fazunenko (Inactive) added a comment -
            SQE is okay to defer.
            Show
            dfazunen Dmitry Fazunenko (Inactive) added a comment - SQE is okay to defer.
            Hide
            hgupdate HG Updates added a comment -
            URL: http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/d87c2d9c1eb4
            User: tschatzl
            Date: 2014-12-18 13:26:49 +0000
            Show
            hgupdate HG Updates added a comment - URL: http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/d87c2d9c1eb4 User: tschatzl Date: 2014-12-18 13:26:49 +0000
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            hgupdate HG Updates added a comment -
            URL: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/d87c2d9c1eb4
            User: lana
            Date: 2015-01-07 21:40:58 +0000
            Show
            hgupdate HG Updates added a comment - URL: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/d87c2d9c1eb4 User: lana Date: 2015-01-07 21:40:58 +0000

              People

              • Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                tschatzl Thomas Schatzl
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                Dates

                • Created:
                  Updated:
                  Resolved: