[Java Broker] Performance Improvements (particularlyfor Pub/Sub)
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                 Key: QPID-790
                 URL: https://issues.apache.org/jira/browse/QPID-790
             Project: Qpid
          Issue Type: Improvement
          Components: Java Broker, Java Common
    Affects Versions: M2.1
            Reporter: Rob Godfrey
             Fix For: M2.1


In a pub/sub scenario with a single publisher and many subscribers the Broker 
currently does most of its work in serial in the task dealing with the receipt 
of the incoming content.  Much of this work can be shifted to the tasks for 
writing the output to the individual subscribers; this increases parallelism 
and provides a substantial throughput improvement on multi-core machines.

Other small fixes remove repeated calls to the configuration to check static 
properties.

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