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Posted to dev@qpid.apache.org by "Robbie Gemmell (Resolved) (JIRA)" <ji...@apache.org> on 2012/01/09 18:00:42 UTC
[jira] [Resolved] (QPID-3714) [Java] Performance Improvements
[ https://issues.apache.org/jira/browse/QPID-3714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robbie Gemmell resolved QPID-3714.
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Resolution: Fixed
Fix Version/s: 0.15
Closing out, changes look good to me.
> [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
> Fix For: 0.15
>
>
> 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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