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https://issues.apache.org/jira/browse/CASSANDRA-18454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17716734#comment-17716734
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Stefan Miklosovic commented on CASSANDRA-18454:
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[~bschoeni] wouldnt be "nodetool sjk gc" command helpful here instead?
> Enhance nodetool gcstats
> -------------------------
>
> Key: CASSANDRA-18454
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18454
> Project: Cassandra
> Issue Type: Improvement
> Components: Tool/nodetool
> Reporter: Brad Schoening
> Priority: Normal
>
> Nodetool gcstats reports historical GC activity:
> * Interval (ms)
> * Max GC Elapsed (ms)
> * Total GC Elapsed (ms)
> * Stdev GC Elapsed (ms)
> * GC Reclaimed (MB)
> * Collections
> * Direct Memory Bytes
> but in the MBean java.lang.GarbageCollector there are recent statistic in
> events/second for:
> * GcThreadCount
> * Duration
> It would be useful to see size of eden / survivor / old space and humongous
> allocations.
> The metrics show with jhsdb jmap would be very helpful as well, if they're
> available.
> https://docs.oracle.com/en/java/javase/11/troubleshoot/diagnostic-tools.html#GUID-A69901EC-F87D-4B63-A8B7-DE8684AD4FF9
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