Sun Java System Message Queue 4.2 Developer's Guide for Java Clients

Delivery Mode (Persistent/Nonpersistent)

Persistent messages guarantee message delivery in case of broker failure. The broker stores these message in a persistent store until all intended consumers acknowledge that they have consumed the message.

Broker processing of persistent messages is slower than for nonpersistent messages for the following reasons:

For both queues and topics with durable subscribers, performance was approximately 40% faster for non-persistent messages. We obtained these results using 10K-size messages and AUTO_ACKNOWLEDGE mode.