We have a Jboss server which hosts a JMS queue, which is being subscribed by 
message driven beans on 2 other Jboss nodes (3.2.3 with JMS 1.1). Theoretically 
the messages should be randomly delivered to both of these subscribing server 
nodes (1:1 ratio). But what we are seeing is most of the messages 
(approximately 1:3 ratio) are being delivered to one of the nodes (looks like 
the node which registered to the JMS queue first)

The maximum number of  MDBs configured on each of the receiving nodes where 15 
(default with 3.2.3), we have brought down them to 5 , still the behaviour be 
the same.If we restart the node, which is loaded more, the behaviour just gets 
swapped.

We are not able to understand why this affinity is?, This is causing extreme  
CPU utilisation on one of the nodes 

Any comments -  highly appreciated.


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