Alex Rudyy created QPID-8385:
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Summary: [Broker-J] Improve performance of operation to dequeue
queue entries on message expiration or triggering ring policy
Key: QPID-8385
URL: https://issues.apache.org/jira/browse/QPID-8385
Project: Qpid
Issue Type: Improvement
Components: Broker-J
Reporter: Alex Rudyy
Fix For: qpid-java-broker-8.0.0, qpid-java-broker-7.1.6
AutoCommitTransaction is used to dequeue entries on message expiration or
breaching ring policy threshold. As result, the dequeueing operation for
persistent queue entry blocks until queue entry record is removed from the
store and the underlying store transaction is synced to disk. The sequential
removal of multiple entries can results in unnecessary delays due to syncing
disk on every dequeue.
The broker performance for the corner cases described above can be
significantly improved by using AsyncAutoCommitTransaction in dequeue
operations.
Asynchronous transaction does not wait for the store dequeue transaction to
sync to disk. As result, the performance of removal unneeded queue entries can
increase.
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