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  1. JDK
  2. JDK-8277919

OldObjectSample event causing bloat in the class constant pool in JFR recording

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    • jfr
    • b28
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      Description

        Allocation heavy applications with OldObjectSample enabled will end up storing many duplicates of the same klass artifact, creating a huge bloat in the class area of the recording constant pool (see the akka_6.jfr.zip attachment).

        While this is just annoying when the recording does not have the max size set it becomes a real problem with max size - the class constant pool will push out the useful data eventually (again, see the akka_6.jfr.zip attachment).

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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-8278876 OldObjectSample event causing bloat in the class constant pool in JFR recording

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8279571 OldObjectSample event causing bloat in the class constant pool in JFR recording

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8320657 OldObjectSample event causing bloat in the class constant pool in JFR recording

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8278987 RunThese24H.java failed with EXCEPTION_ACCESS_VIOLATION in __write_sample_info__

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8249245 assert(((((JfrTraceIdBits::load(klass)) & ((JfrTraceIdEpoch::this_epoch_method_and_class_bits()))) != 0))) failed: invariant

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8233705 Let artifact iteration running time be a function of incrementally tagged artifacts

            • P3 - Major loss of function.
            • Resolved
            links to

            Commit Commit openjdk/jdk17u-dev/4a188e91

            Commit Commit openjdk/jdk18/475ec8e6

            Review Review openjdk/jdk17u-dev/40

            Review Review openjdk/jdk17u/329

            Review Review openjdk/jdk18/15

            Review Review openjdk/jdk/6801

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                mgronlun Markus Grönlund
                jbachorik Jaroslav Bachorík
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