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https://issues.apache.org/jira/browse/QPID-3714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13179460#comment-13179460
]
Keith Wall commented on QPID-3714:
----------------------------------
The MessageEchoTests are provoking a different NPE:
{code}
java.lang.NullPointerException
at
org.apache.qpid.server.store.StoredMemoryMessage.getContent(StoredMemoryMessage.java:105)
at
org.apache.qpid.server.message.MessageTransferMessage.getContent(MessageTransferMessage.java:115)
at
org.apache.qpid.server.message.MessageTransferMessage.getBody(MessageTransferMessage.java:126)
at
org.apache.qpid.server.subscription.Subscription_0_10.send(Subscription_0_10.java:424)
at
org.apache.qpid.server.queue.SimpleAMQQueue.deliverMessage(SimpleAMQQueue.java:800)
at
org.apache.qpid.server.queue.SimpleAMQQueue.attemptDelivery(SimpleAMQQueue.java:1781)
at
org.apache.qpid.server.queue.SimpleAMQQueue.processQueue(SimpleAMQQueue.java:1935)
at org.apache.qpid.server.queue.QueueRunner.run(QueueRunner.java:77)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
{code}
> [Java] Performance Improvements
> -------------------------------
>
> Key: QPID-3714
> URL: https://issues.apache.org/jira/browse/QPID-3714
> Project: Qpid
> Issue Type: Improvement
> Components: Java Broker, Java Broker BDB Store, Java Broker Derby
> Store, Java Client, Java Common
> Reporter: Rob Godfrey
> Assignee: Rob Godfrey
>
> Assorted performance improvements for the Java Broker and Client based on
> profiling and a bit of common sense:
> Persistence:
> Store message in same transaction as enqueue if possible
> Memory:
> Remove unnecessary (un)boxing
> Reduce unnecessary copying of message data
> Cache short strings
> Cache queues for a given routing key on an Exchange
> (0-9) Use a fixed size buffer for preparing frames to write out
> Other:
> Reduce calls to System.currentTimeMillis
> Cache publishing access control queries
> (0-10) Special case immutable RangeSets, in particular RangeSets of a single
> range/point
> (0-10) Special case delivery properties and message properties in headers
> (0-9) send commit-ok as soon as data committed to store
> (0-9) Optimised long and int typed values for FieldTables
> (0-9) Retain FieldTable encoded form
> (0-9) Cache queue and topic destinations
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