This jcmd option was added by the JVM team to analyze memory used by metaspace and is not useful to customers. Since then we've created better utilities. -Xlog:cds during -Xshare:dump is an example of a better utility that uses a newer better mechanism in the source code.
The output of this jcmd GC.class_stats is lengthy and not well suited to understanding memory used by metaspace objects, nor is it a GC specific facility. It also has some open bugs.
We should deprecate this in 14 and remove in 15.
- csr for
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JDK-8235335 Deprecate jcmd GC.class_stats command line option
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- Closed
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- relates to
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JDK-8230932 Add support in dcmd for hidden classes
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- Resolved
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JDK-8234355 Buffer overflow in jcmd GC.class_stats due to too many classes
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- Closed
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- Closed
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- Closed
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JDK-8232759 Remove GC.class_stats
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- Resolved
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(1 relates to)