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  1. JDK
  2. JDK-8268906

gc/g1/mixedgc/TestOldGenCollectionUsage.java assumes that GCs take 1ms minimum

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    • Subcomponent:
      gc
    • Resolved In Build:
      b04
    • CPU:
      aarch64
    • OS:
      os_x

      Backports

        Description

        The following test failed in the JDK18 CI:

        gc/g1/mixedgc/TestOldGenCollectionUsage.java

        Here's a snippet from the log file:

        #section:main
        ----------messages:(5/1128)----------
        command: main -Xbootclasspath/a:. -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -verbose:gc -XX:NewSize=2m -XX:MaxNewSize=2m -Xmx14m -Xms14m -XX:+AlwaysTenure -XX:InitiatingHeapOccupancyPercent=100 -XX:-G1UseAdaptiveIHOP -XX:G1MixedGCCountTarget=4 -XX:MaxGCPauseMillis=30000 -XX:G1HeapRegionSize=1m -XX:G1HeapWastePercent=0 -XX:G1MixedGCLiveThresholdPercent=100 gc.g1.mixedgc.TestOldGenCollectionUsage
        reason: User specified action: run main/othervm -Xbootclasspath/a:. -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -verbose:gc -XX:NewSize=2m -XX:MaxNewSize=2m -Xmx14m -Xms14m -XX:+AlwaysTenure -XX:InitiatingHeapOccupancyPercent=100 -XX:-G1UseAdaptiveIHOP -XX:G1MixedGCCountTarget=4 -XX:MaxGCPauseMillis=30000 -XX:G1HeapRegionSize=1m -XX:G1HeapWastePercent=0 -XX:G1MixedGCLiveThresholdPercent=100 gc.g1.mixedgc.TestOldGenCollectionUsage
        Mode: othervm [/othervm specified]
        Additional options from @modules: --add-modules java.base,java.management --add-exports java.base/jdk.internal.misc=ALL-UNNAMED
        elapsed time (seconds): 0.424
        ----------configuration:(4/111)----------
        Boot Layer
          add modules: java.base java.management
          add exports: java.base/jdk.internal.misc ALL-UNNAMED

        ----------System.out:(21/1277)----------
        [0.007s][info][gc] Using G1
        Monitor G1 Old Gen pool with G1 Young Generation collector.
        Found pool: G1 Old Gen
        Found collector: G1 Young Generation
        [0.298s][info][gc] GC(0) Pause Young (Normal) (G1 Evacuation Pause) 2M->1M(16M) 2.067ms
        [0.312s][info][gc] GC(1) Pause Full (WhiteBox Initiated Full GC) 1M->1M(16M) 9.335ms
        [0.318s][info][gc] GC(2) Pause Young (Normal) (G1 Evacuation Pause) 3M->3M(16M) 1.416ms
        [0.318s][info][gc] GC(3) Pause Young (Normal) (WhiteBox Initiated Young GC) 3M->3M(16M) 0.628ms
        G1 Old Gen: usage after GC = 1786184
        G1 Young Generation: collection count = 3
        G1 Young Generation: collection time = 4
        [0.333s][info][gc] GC(4) Pause Young (Concurrent Start) (WhiteBox Initiated Concurrent Mark) 3M->3M(16M) 0.470ms
        [0.333s][info][gc] GC(5) Concurrent Mark Cycle
        [0.339s][info][gc] GC(5) Pause Remark 3M->3M(16M) 2.340ms
        [0.340s][info][gc] GC(5) Pause Cleanup 3M->3M(16M) 0.019ms
        [0.340s][info][gc] GC(5) Concurrent Mark Cycle 6.666ms
        [0.381s][info][gc] GC(6) Pause Young (Prepare Mixed) (WhiteBox Initiated Young GC) 3M->3M(16M) 0.268ms
        [0.381s][info][gc] GC(7) Pause Young (Mixed) (WhiteBox Initiated Young GC) 3M->3M(16M) 0.241ms
        G1 Old Gen: usage after GC = 3358024
        G1 Young Generation: collection count = 6
        G1 Young Generation: collection time = 4
        ----------System.err:(14/957)----------
        java.lang.RuntimeException: Collector has not run some more
        at gc.g1.mixedgc.TestOldGenCollectionUsage.run(TestOldGenCollectionUsage.java:143)
        at gc.g1.mixedgc.TestOldGenCollectionUsage.main(TestOldGenCollectionUsage.java:62)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
        at java.base/java.lang.Thread.run(Thread.java:833)

        JavaTest Message: Test threw exception: java.lang.RuntimeException: Collector has not run some more
        JavaTest Message: shutting down test

        STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Collector has not run some more
        ----------rerun:(53/8901)*----------

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                Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                dcubed Daniel Daugherty
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                  Updated:
                  Resolved: