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  1. JDK
  2. JDK-8239537

cgroup MetricsTester testMemorySubsystem fails sometimes when testing memory.kmem.tcp.usage_in_bytes

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    • b12
    • generic
    • linux

    Backports

      Description

        The testMemorySubsystem test in MetricsTester.java sometimes fails with messages like this :

        java.lang.RuntimeException: Test failed for - memory:memory.kmem.tcp.usage_in_bytes, expected [655360], got [786432]
        at jdk.test.lib.containers.cgroup.MetricsTester.fail(MetricsTester.java:207)
        at jdk.test.lib.containers.cgroup.MetricsTester.testMemorySubsystem(MetricsTester.java:309)

        I looked into the checking code, and looks like there is an error margin allowed in CgroupMetricsTester, which is currently 0.1 .
        This might be changed to a somewhat higher value, e.g. 0.25 to make the test more robust.

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8304775 cgroup MetricsTester testMemorySubsystem fails sometimes when testing memory.kmem.tcp.usage_in_bytes

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8304778 cgroup MetricsTester testMemorySubsystem fails sometimes when testing memory.kmem.tcp.usage_in_bytes

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8310705 cgroup MetricsTester testMemorySubsystem fails sometimes when testing memory.kmem.tcp.usage_in_bytes

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            links to

            Commit Commit openjdk/jdk11u-dev/114bb9a8

            Review Review openjdk/jdk11u-dev/1980

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                mbaesken Matthias Baesken
                mbaesken Matthias Baesken
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                  Updated:
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