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Re: Configure MDB PoolSize

created by Harry P. in JBoss Messaging - View the full discussion

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.

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