Harry P. [http://community.jboss.org/people/harishpandya] created the discussion "Re: Configure MDB PoolSize" To view the discussion, visit: http://community.jboss.org/message/625437#625437 -------------------------------------------------------------- Hi jaikiran,                 i want to use concurrency using JMS so i used topic implementation of JMS. My standardjboss.xml is <proxy-factory-config>         <JMSProviderAdapterJNDI>DefaultJMSProvider</JMSProviderAdapterJNDI>         <ServerSessionPoolFactoryJNDI>StdJMSPool</ServerSessionPoolFactoryJNDI>         <CreateJBossMQDestination>true</CreateJBossMQDestination>         <!-- WARN: Don't set this to zero until a bug in the pooled executor is fixed -->         <MinimumSize>2</MinimumSize>         <MaximumSize>2</MaximumSize><!--how many parellel need for FPM -->         <KeepAliveMillis>150000</KeepAliveMillis>         <MaxMessages>15</MaxMessages>         <MDBConfig>           <ReconnectIntervalSec>10</ReconnectIntervalSec>           <DLQConfig>             <DestinationQueue>queue/DLQ</DestinationQueue>             <MaxTimesRedelivered>10</MaxTimesRedelivered>             <TimeToLive>0</TimeToLive>           </DLQConfig>         </MDBConfig>       </proxy-factory-config> Concurrency is achieved. But the problem is that concurrency is applied to a fixed no of messages after that remaining messages are taken sequentially. Ex. No. of messages on topic(range)                             Connecurrency performed for message                         Sequential                  11-15                                                                       4 (2 parellel)                                                 7-11                 21-24                                                                       10(5 parellel)                                                11-15                  25-29                                                                       18(9 parellel)                                                7-11                 35-40                                                                       34(17 perellel- best perf.)                              1-6 do you know why such pattern is followed & can we restrict it. Thanks in Advance. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/625437#625437] Start a new discussion in JBoss Messaging at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]