Martín Urtasun [http://community.jboss.org/people/letincho] created the discussion "Re: @Pool / @ActivationConfigProperty multitheading problem?" To view the discussion, visit: http://community.jboss.org/message/625900#625900 -------------------------------------------------------------- Hi again,  (now with enters and spaces :) ) After 1 or 2 days of normal execution, the server hangs: I can't login by ssh or access to the web console (or any other application running on JBoss). The log of JBoss just stop without any exception.   This problem started when I configured the pool size of may MDB with the @Pool annotation. I have more than 50 MDBs. Because of my performance problems (of throuput) I try to configure differents pool size on each MDBs.   So, I'd configured \server\default\deploy\jca-jboss-beans.xml,  with 2048. And put diferents values on each MDB.            @ActivationConfigProperty(propertyName = "maxMessages", propertyValue = "1"),                     @ActivationConfigProperty(propertyName = "maxSession", propertyValue = "50")})                     @Pool (value=PoolDefaults.POOL_IMPLEMENTATION_STRICTMAX,maxSize=50,timeout=20000)  The sum of the all maxSize is around 1000.  I've no problem of database connection.   I've no OutOfMemory exception.   I've no exception on my logs.   My server is running on a VirtualBox 4, with 8 processors (the host has 16)  with 6GB of RAM (the host has 16GB).    I guess about a multithreading problem or a pool administration bug, but I can't found any solution.   Can anybody help me?  Thanks in advance.  Martín  PD:   Server information:   Version: 5.1.0.GA (build: SVNTag=JBoss_5_1_0_GA date=200905221100) Version Name: The Oracle Built on: May 22 2009 JVM Environment Free Memory: 2067 MB Max Memory: 2995 MB Total Memory: 2995 MB #Threads: 2206 JVM Version: 1.5.0_22-b03 (Sun Microsystems Inc.) JVM Name: Java HotSpot(TM) 64-Bit Server VM  #CPU: 8 OS: Linux 2.6.32.39 (amd64) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/625900#625900] Start a new discussion in EJB3 at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Martín Urtasun [http://community.jboss.org/people/letincho] created the discussion "Re: @Pool / @ActivationConfigProperty multitheading problem?" To view the discussion, visit: http://community.jboss.org/message/626020#626020 -------------------------------------------------------------- Hi Jaikiran,   While I'm waiting for the next hang... I've made a thread dump from JmxConsole.   I have 2048 workmanagers in state Waiting... is this right?  Thanks,  Martín   Thread: WorkManager(2)-2025 : priority:5, demon:true, threadId:2365, threadState:WAITING sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:118) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1841) java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:359) java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:470) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) java.lang.Thread.run(Thread.java:595) Thread: WorkManager(2)-2026 : priority:5, demon:true, threadId:2366, threadState:WAITING sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:118) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1841) java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:359) java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:470) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) java.lang.Thread.run(Thread.java:595) Thread: WorkManager(2)-2027 : priority:5, demon:true, threadId:2367, threadState:WAITING sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:118) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1841) java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:359) java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:470) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) java.lang.Thread.run(Thread.java:595) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/626020#626020] Start a new discussion in EJB3 at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]