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Posted to commits@cassandra.apache.org by "Benedict (JIRA)" <ji...@apache.org> on 2014/02/27 15:15:19 UTC

[jira] [Created] (CASSANDRA-6780) Memtable OffHeap GC Statistics

Benedict created CASSANDRA-6780:
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             Summary: Memtable OffHeap GC Statistics
                 Key: CASSANDRA-6780
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6780
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Benedict
            Assignee: Benedict
            Priority: Minor


As mentioned in CASSANDRA-6689, it would be nice to expose via JMX some statistics on GC behaviour, instead of just optionally debug logging it (and maybe expand to cover some more things):

- Time spent in GC
- Amount of memory reclaimed
- Number of collections (per CFS?), and average reclaimed per collection




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