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From "Alex Rudyy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-6726) Change flow to disk trigger to consider direct memory occupancy
Date Thu, 03 Sep 2015 13:54:46 GMT
Alex Rudyy created QPID-6726:
--------------------------------

             Summary: Change flow to disk trigger to consider direct memory occupancy
                 Key: QPID-6726
                 URL: https://issues.apache.org/jira/browse/QPID-6726
             Project: Qpid
          Issue Type: Bug
          Components: Java Broker
    Affects Versions: qpid-java-6.0
            Reporter: Alex Rudyy
            Assignee: Alex Rudyy




Currently, flow to disk to triggers when a queue/virtualhost breaches a target size where
the target size is 40% of the Broker's maxMemory.

Message payload/headers are now stored in direct memory so considering the occupancy of heap
is no longer appropriate. We need to change the algorithm to consider direct memory occupancy
or the occupancy of the buffers allocated within direct memory.

Note: We need to ensure that we leave sufficient direct memory for other usages such as Jetty.




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