[jboss-user] [EJB3] - EJB3 is slow sometimes

[Kalaiselvam P]

Kalaiselvam P [https://community.jboss.org/people/kalaiselvamp] created the discussion

"EJB3 is slow sometimes"

To view the discussion, visit: https://community.jboss.org/message/799317#799317

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Hi,

We have EJB(EJB3.0) application which is deployed on JBoss 5.0, we feel sometimes EJB takes long time to return the data(data volume is always same) to invoker. 

@Stateless(name = "RequiresNewSessionBean")
@RemoteBinding (jndiBinding = "N_All/RequiresNewSessionBean/remote")
@LocalBinding (jndiBinding = "N_All/RequiresNewSessionBean/local")
@TransactionManagement(TransactionManagementType.CONTAINER)
@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
*com.test.ejb.RequiresNewSessionBean* 

*com.test.ejb.LocalSessionBeanInvoker* (this class has only invoking parts) will invoke "*com.test.ejb.RequiresNewSessionBean*"

As you see the below 3 scenarios,  execution of "*com.test.ejb.RequiresNewSessionBean*" has been finished but it takes time to return to invoker.
The time taken is changing from "*8 ms*" to maximum "*150 ms*" in my local system.

But in our production server this time taken is went up to "*3000 ms"* (only sometimes not all the times, by default it will be within 1 ~ 2 ms in Production server)

Please share your suggestions to overcome this issue.

Scenario 1
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17:02:15,052 DEBUG [LocalSessionBeanInvoker]  20130225-080213979 0001  com.test.ejb.LocalSessionBeanInvoker has started.20130225080215052
17:02:15,054 DEBUG [RequiresNewSessionBean]  20130225-080213979 0001  com.test.ejb.RequiresNewSessionBean has started.20130225080215053
17:02:15,094 DEBUG [RequiresNewSessionBean]  20130225-080213979 0001  com.test.ejb.RequiresNewSessionBean has finished.20130225080215093
17:02:15,094 DEBUG [RequiresNewSessionBean]  20130225-080213979 0001  *[com.test.ejb.RequiresNewSessionBean]Elapsed time is 41 ms.*
17:02:15,101 DEBUG [LocalSessionBeanInvoker]  20130225-080213979 0001  com.test.ejb.LocalSessionBeanInvoker has finished.20130225080215101
17:02:15,101 DEBUG [LocalSessionBeanInvoker]  20130225-080213979 0001  *[com.test.ejb.LocalSessionBeanInvoker]Elapsed time is 49 ms.*


Scenario 2
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17:11:35,343 DEBUG [LocalSessionBeanInvoker]  20130225-081135291 0001  com.test.ejb.LocalSessionBeanInvoker has started.20130225081135343
17:11:35,344 DEBUG [RequiresNewSessionBean]  20130225-081135291 0001  com.test.ejb.RequiresNewSessionBean has started.20130225081135344
17:11:35,402 DEBUG [RequiresNewSessionBean]  20130225-081135291 0001  com.test.ejb.RequiresNewSessionBean has finished.20130225081135402
17:11:35,402 DEBUG [RequiresNewSessionBean]  20130225-081135291 0001  *[com.test.ejb.RequiresNewSessionBean]Elapsed time is 53 ms.*
17:11:35,417 DEBUG [LocalSessionBeanInvoker]  20130225-081135291 0001  com.test.ejb.LocalSessionBeanInvoker has finished.20130225081135417
17:11:35,417 DEBUG [LocalSessionBeanInvoker]  20130225-081135291 0001  *[com.test.ejb.LocalSessionBeanInvoker]Elapsed time is 71 ms.*


Scenario 3
----------
17:32:25,705 DEBUG [LocalSessionBeanInvoker]  20130225-083225641 0001  com.test.ejb.LocalSessionBeanInvoker has started.20130225083225705
17:32:25,708 DEBUG [RequiresNewSessionBean]  20130225-083225641 0001  com.test.ejb.RequiresNewSessionBean has started.20130225083225708
17:32:25,775 DEBUG [RequiresNewSessionBean]  20130225-083225641 0001  com.test.ejb.RequiresNewSessionBean has finished.20130225083225775
17:32:25,775 DEBUG [RequiresNewSessionBean]  20130225-083225641 0001  *[com.test.ejb.RequiresNewSessionBean]Elapsed time is 67 ms.*
17:32:25,789 DEBUG [LocalSessionBeanInvoker]  20130225-083225641 0001  com.test.ejb.LocalSessionBeanInvoker has finished.20130225083225789
17:32:25,789 DEBUG [LocalSessionBeanInvoker]  20130225-083225641 0001  *[com.test.ejb.LocalSessionBeanInvoker]Elapsed time is 84 ms.*
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