[jboss-dev-forums] [JBoss Web Development] - AJP threads waiting on socket reads in Jboss 7.1.1.final

[Jacob Marcus]

Jacob Marcus [https://community.jboss.org/people/jacobmarcus20] created the discussion

"AJP threads waiting on socket reads in Jboss 7.1.1.final"

To view the discussion, visit: https://community.jboss.org/message/747731#747731

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Hi all,

I see many threads in a waiting state with the following trace. Is this a problem? 

+State: RUNNABLE+
+Total blocked: 3    Total waited: 45+
+Strack trace:+
+    java.net.SocketInputStream.socketRead0(Native Method)+
+    java.net.SocketInputStream.read(SocketInputStream.java:129)+
+    org.apache.coyote.ajp.AjpProcessor.read(AjpProcessor.java:1131)+
+    org.apache.coyote.ajp.AjpProcessor.readMessage(AjpProcessor.java:1213)+
+    org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:451)+
+    org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:445)+
+    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:518)+
+    org.jboss.threads.SimpleDirectExecutor.execute(SimpleDirectExecutor.java:33)+
+    org.jboss.threads.QueueExecutor.runTask(QueueExecutor.java:801)+
+    org.jboss.threads.QueueExecutor.access$100(QueueExecutor.java:45)+
+    org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:842)+
+    java.lang.Thread.run(Thread.java:662)+
+    org.jboss.threads.JBossThread.run(JBossThread.java:122)+

I see some in the follwoing state. This is what I woud expect as I have configured some core threads. 

+State: WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject at 38380f4b+
+Total blocked: 46    Total waited: 66+
+Strack trace:+
+    sun.misc.Unsafe.park(Native Method)+
+    java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)+
+    java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)+
+    org.jboss.threads.QueueExecutor.takeTask(QueueExecutor.java:746)+
+    org.jboss.threads.QueueExecutor.access$400(QueueExecutor.java:45)+
+    org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:835)+
+    java.lang.Thread.run(Thread.java:662)+
+    org.jboss.threads.JBossThread.run(JBossThread.java:122)+


My thread pool configuration looks like this.

*<bounded-queue-thread-pool name="test-ajp" allow-core-timeout="false">*
*                <core-threads count="50"/>*
*                <queue-length count="1"/>*
*                <max-threads count="650"/>*
*                <keepalive-time time="60" unit="seconds"/>*
 *</bounded-queue-thread-pool>*

Please let me know why those some of these threads seem to be in a waiting mode. I suspect I am misisng a timeout configuration.
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