During volume testing with 2 nodes I now see these deadlocks in the thread dumps (platform AS 4.2.0.GA_CP01, JBM snapshot_stable 12-Nov-2007):
Node 1: Found one Java-level deadlock: | ============================= | "Messaging Timeout(3)-266": | waiting to lock monitor 0x7548e274 (object 0x83f80fa0, a java.lang.Object), | which is held by "Thread-114" | "Thread-114": | waiting to lock monitor 0x7a7dc6e4 (object 0x83f80f70, a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor), | which is held by "Messaging Timeout(3)-266" | | Java stack information for the threads listed above: | =================================================== | "Messaging Timeout(3)-266": | at org.jboss.messaging.core.impl.MessagingQueue$DistributorWrapper.getNumberOfReceivers(MessagingQueue.java:621) | - waiting to lock <0x83f80fa0> (a java.lang.Object) | at org.jboss.messaging.core.impl.ClusterRoundRobinDistributor.getNumberOfReceivers(ClusterRoundRobinDistributor.java:129) | - locked <0x83f80f70> (a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor) | at org.jboss.messaging.core.impl.ChannelSupport$DeliverRefTimeoutTarget.timedOut(ChannelSupport.java:956) | at org.jboss.util.timeout.TimeoutFactory$TimeoutWorker.run(TimeoutFactory.java:265) | at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:148) | at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) | at java.lang.Thread.run(Thread.java:595) | "Thread-114": | at org.jboss.messaging.core.impl.ClusterRoundRobinDistributor.getNumberOfReceivers(ClusterRoundRobinDistributor.java:129) | - waiting to lock <0x83f80f70> (a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor) | at org.jboss.messaging.core.impl.ChannelSupport.deliver(ChannelSupport.java:222) | - locked <0x83f80fa0> (a java.lang.Object) | at org.jboss.jms.server.endpoint.ServerSessionEndpoint$2.run(ServerSessionEndpoint.java:1598) | at EDU.oswego.cs.dl.util.concurrent.QueuedExecutor$RunLoop.run(QueuedExecutor.java:89) | at java.lang.Thread.run(Thread.java:595) | | Found one Java-level deadlock: | ============================= | "Thread-424": | waiting to lock monitor 0x7548e2f4 (object 0x8409cda0, a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor), | which is held by "Messaging Timeout(3)-281" | "Messaging Timeout(3)-281": | waiting to lock monitor 0x7548e874 (object 0x8409cdd0, a java.lang.Object), | which is held by "Thread-424" | | Java stack information for the threads listed above: | =================================================== | "Thread-424": | at org.jboss.messaging.core.impl.ClusterRoundRobinDistributor.getNumberOfReceivers(ClusterRoundRobinDistributor.java:129) | - waiting to lock <0x8409cda0> (a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor) | at org.jboss.messaging.core.impl.ChannelSupport.deliver(ChannelSupport.java:222) | - locked <0x8409cdd0> (a java.lang.Object) | at org.jboss.jms.server.endpoint.ServerSessionEndpoint$2.run(ServerSessionEndpoint.java:1598) | at EDU.oswego.cs.dl.util.concurrent.QueuedExecutor$RunLoop.run(QueuedExecutor.java:89) | at java.lang.Thread.run(Thread.java:595) | "Messaging Timeout(3)-281": | at org.jboss.messaging.core.impl.MessagingQueue$DistributorWrapper.getNumberOfReceivers(MessagingQueue.java:621) | - waiting to lock <0x8409cdd0> (a java.lang.Object) | at org.jboss.messaging.core.impl.ClusterRoundRobinDistributor.getNumberOfReceivers(ClusterRoundRobinDistributor.java:129) | - locked <0x8409cda0> (a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor) | at org.jboss.messaging.core.impl.ChannelSupport$DeliverRefTimeoutTarget.timedOut(ChannelSupport.java:956) | at org.jboss.util.timeout.TimeoutFactory$TimeoutWorker.run(TimeoutFactory.java:265) | at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:148) | at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) | at java.lang.Thread.run(Thread.java:595) | | Found 2 deadlocks. | Node 2: Found one Java-level deadlock: | ============================= | "Thread-107": | waiting to lock monitor 0x08355a8c (object 0x841ad4d8, a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor), | which is held by "Messaging Timeout(3)-13" | "Messaging Timeout(3)-13": | waiting to lock monitor 0x087f6f54 (object 0x841ad508, a java.lang.Object), | which is held by "Thread-107" | | Java stack information for the threads listed above: | =================================================== | "Thread-107": | at org.jboss.messaging.core.impl.ClusterRoundRobinDistributor.getNumberOfReceivers(ClusterRoundRobinDistributor.java:129) | - waiting to lock <0x841ad4d8> (a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor) | at org.jboss.messaging.core.impl.ChannelSupport.deliver(ChannelSupport.java:222) | - locked <0x841ad508> (a java.lang.Object) | at org.jboss.jms.server.endpoint.ServerSessionEndpoint$2.run(ServerSessionEndpoint.java:1598) | at EDU.oswego.cs.dl.util.concurrent.QueuedExecutor$RunLoop.run(QueuedExecutor.java:89) | at java.lang.Thread.run(Thread.java:595) | "Messaging Timeout(3)-13": | at org.jboss.messaging.core.impl.MessagingQueue$DistributorWrapper.getNumberOfReceivers(MessagingQueue.java:621) | - waiting to lock <0x841ad508> (a java.lang.Object) | at org.jboss.messaging.core.impl.ClusterRoundRobinDistributor.getNumberOfReceivers(ClusterRoundRobinDistributor.java:129) | - locked <0x841ad4d8> (a org.jboss.messaging.core.impl.ClusterRoundRobinDistributor) | at org.jboss.messaging.core.impl.ChannelSupport$DeliverRefTimeoutTarget.timedOut(ChannelSupport.java:956) | at org.jboss.util.timeout.TimeoutFactory$TimeoutWorker.run(TimeoutFactory.java:265) | at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:148) | at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) | at java.lang.Thread.run(Thread.java:595) | | Found 1 deadlock. | My message processing comes to a halt, but I doubt it's fully related to these 6 threads. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4106604#4106604 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4106604 _______________________________________________ jboss-user mailing list [email protected] https://lists.jboss.org/mailman/listinfo/jboss-user
