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  1. JDK
  2. JDK-8231489

GC watermark_0_1 failed due to "metaspace.gc.Fault: GC has happened too rare"

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    • Subcomponent:
      gc
    • Resolved In Build:
      b18
    • CPU:
      x86_64
    • OS:
      linux

      Backports

        Description

        The following test failed in the JDK14 CI:

        vmTestbase/metaspace/gc/watermark_0_1/TestDescription.java

        Here's a snippet from the log file:

        %%% Working with Metaspace
        % -XX:MaxMetaspaceFreeRatio=1
        % -XX:MetaspaceSize=5m
        % -XX:MaxMetaspaceSize=25m
        % -XX:-UseCompressedOops
        % -Dtest.java.opts=-server -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -XX:+CreateCoredumpOnCrash -XX:-UseCompressedOops
        % -XX:MinMetaspaceFreeRatio=0
        % Classes loaded: 2160
        % Used metaspace : 14302k
        % Committed metaspce: 15412k
        % GC has been invoked: 11 times
        ----------System.err:(16/1146)----------
        metaspace.gc.Fault: GC has happened too rare: 11 times, expected count greater than 20
        at metaspace.gc.HighWaterMarkTest.checkGCCount(HighWaterMarkTest.java:225)
        at metaspace.gc.HighWaterMarkTest.doCheck(HighWaterMarkTest.java:193)
        at metaspace.gc.MetaspaceBaseGC.run(MetaspaceBaseGC.java:97)
        at metaspace.gc.HighWaterMarkTest.main(HighWaterMarkTest.java:69)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
        at java.base/java.lang.Thread.run(Thread.java:830)

        JavaTest Message: Test threw exception: metaspace.gc.Fault: GC has happened too rare: 11 times, expected count greater than 20
        JavaTest Message: shutting down test

        STATUS:Failed.`main' threw exception: metaspace.gc.Fault: GC has happened too rare: 11 times, expected count greater than 20
        ----------rerun:(49/7349)*----------

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                Assignee:
                pliden Per Liden (Inactive)
                Reporter:
                dcubed Daniel Daugherty
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                  Dates

                  Created:
                  Updated:
                  Resolved: