[jira] [Created] (QPID-7963) [AMQP1.0] Transient messages traverse the heap (even those that don't flow to disk)

["Keith Wall (JIRA)" <ji...@apache.org>]

Keith Wall created QPID-7963:
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             Summary: [AMQP1.0] Transient messages traverse the heap (even those that don't flow to disk)
                 Key: QPID-7963
                 URL: https://issues.apache.org/jira/browse/QPID-7963
             Project: Qpid
          Issue Type: Bug
          Components: Java Broker
    Affects Versions: qpid-java-broker-7.0.0
            Reporter: Keith Wall


Examine heap usage whilst running a large transient message test, I see that large AMQP 1.0 messages manifest fully on the heap whilst they traverse the Broker.  Neither AMQP 0-9 not AMQP 0-10 do this.

See attached jvisualvm screenshot.  The spike at 3.17PM is a 300MB message being produced/consumed.   Later in the same test (same graph) a 750MB message went over AMQP 0-9 and 0-10 messages with no discernible heap impact.





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