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https://issues.apache.org/jira/browse/CASSANDRA-2868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064128#comment-13064128
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Jonathan Ellis commented on CASSANDRA-2868:
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We call getLastGcInfo several times a second.
http://twitter.com/#!/kimchy/status/90861039930970113
You could try turning GCInspector methods into a no-op and see if that makes it
go away.
> Native Memory Leak
> ------------------
>
> Key: CASSANDRA-2868
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2868
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.7.6
> Reporter: Daniel Doubleday
> Priority: Minor
>
> We have memory issues with long running servers. These have been confirmed by
> several users in the user list. That's why I report.
> The memory consumption of the cassandra java process increases steadily until
> it's killed by the os because of oom (with no swap)
> Our server is started with -Xmx3000M and running for around 23 days.
> pmap -x shows
> Total SST: 1961616 (mem mapped data and index files)
> Anon RSS: 6499640
> Total RSS: 8478376
> This shows that > 3G are 'overallocated'.
> We will use BRAF on one of our less important nodes to check wether it is
> related to mmap and report back.
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