On 17/11/2010 21:50, Robillard, Greg L wrote: > I continually get tomcat in this state and can only recover by restarting > tomcat from the command line. Here is the stack trace that I gathered while > getting into this state, but it does not make any sense to me.
Production or testing? Are these the only threads? What happens if you jstack without attempting to connect a profiler? p > Tomcat version apache-tomcat-6.0.26 > > OS linux > > Jstack trace on tomcat hang. > Tomcat is not responding, nor any webapps. Profiler will not attach > > Attaching to process ID 21989, please wait... > Debugger attached successfully. > Server compiler detected. > JVM version is 10.0-b19 > Deadlock Detection: > > No deadlocks found. > > Thread 15911: (state = BLOCKED) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeMemory.getAndSendCurrentStackTrace(char, > char, int, long) @bci=0, line=218 (Compiled frame) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeObjLiveness.traceObjAlloc(java.lang.Object, > char) @bci=158, line=278 (Compiled frame) > - > java.io.ObjectInputStream$BlockDataInputStream.<init>(java.io.ObjectInputStream, > java.io.InputStream) @bci=91, line=2359 (Interpreted frame) > - java.io.ObjectInputStream.<init>(java.io.InputStream) @bci=25, line=276 > (Interpreted frame) > - sun.rmi.server.MarshalInputStream.<init>(java.io.InputStream) @bci=2, > line=107 (Interpreted frame) > - sun.rmi.transport.ConnectionInputStream.<init>(java.io.InputStream) @bci=2, > line=38 (Interpreted frame) > - sun.rmi.transport.StreamRemoteCall.getInputStream() @bci=32, line=115 > (Interpreted frame) > - sun.rmi.transport.Transport.serviceCall(java.rmi.server.RemoteCall) @bci=1, > line=124 (Interpreted frame) > - > sun.rmi.transport.tcp.TCPTransport.handleMessages(sun.rmi.transport.Connection, > boolean) @bci=217, line=541 (Compiled frame) > - sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0() @bci=821, > line=810 (Interpreted frame) > - sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run() @bci=58, > line=652 (Interpreted frame) > - java.util.concurrent.ThreadPoolExecutor$Worker.runTask(java.lang.Runnable) > @bci=59, line=885 (Interpreted frame) > - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=28, line=907 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 12244: (state = BLOCKED) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeMemory.getAndSendCurrentStackTrace(char, > char, int, long) @bci=0, line=218 (Compiled frame) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeObjLiveness.traceObjAlloc(java.lang.Object, > char) @bci=158, line=278 (Compiled frame) > - > java.io.ObjectInputStream$BlockDataInputStream.<init>(java.io.ObjectInputStream, > java.io.InputStream) @bci=91, line=2359 (Interpreted frame) > - java.io.ObjectInputStream.<init>(java.io.InputStream) @bci=25, line=276 > (Interpreted frame) > - sun.rmi.server.MarshalInputStream.<init>(java.io.InputStream) @bci=2, > line=107 (Interpreted frame) > - sun.rmi.transport.ConnectionInputStream.<init>(java.io.InputStream) @bci=2, > line=38 (Interpreted frame) > - sun.rmi.transport.StreamRemoteCall.getInputStream() @bci=32, line=115 > (Interpreted frame) > - sun.rmi.transport.Transport.serviceCall(java.rmi.server.RemoteCall) @bci=1, > line=124 (Interpreted frame) > - > sun.rmi.transport.tcp.TCPTransport.handleMessages(sun.rmi.transport.Connection, > boolean) @bci=217, line=541 (Compiled frame) > - sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0() @bci=821, > line=810 (Interpreted frame) > - sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run() @bci=58, > line=652 (Interpreted frame) > - java.util.concurrent.ThreadPoolExecutor$Worker.runTask(java.lang.Runnable) > @bci=59, line=885 (Interpreted frame) > - java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=28, line=907 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 22760: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - java.util.TimerThread.mainLoop() @bci=28, line=483 (Interpreted frame) > - java.util.TimerThread.run() @bci=1, line=462 (Interpreted frame) > > > Thread 3343: (state = BLOCKED) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeMemory.getAndSendCurrentStackTrace(char, > char, int, long) @bci=0, line=218 (Compiled frame) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeObjLiveness.traceObjAlloc(java.lang.Object, > char) @bci=158, line=278 (Compiled frame) > - java.lang.String.valueOf(char[]) @bci=12, line=2841 (Interpreted frame) > - java.lang.Thread.getName() @bci=4, line=1061 (Interpreted frame) > - > org.apache.catalina.connector.CoyoteAdapter.service(org.apache.coyote.Request, > org.apache.coyote.Response) @bci=120, line=295 (Interpreted frame) > - org.apache.coyote.http11.Http11Processor.process(java.net.Socket) @bci=468, > line=852 (Interpreted frame) > - > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(java.net.Socket) > @bci=82, line=588 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=41, line=489 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 3255: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 3202: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 2805: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 2721: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 2372: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 2143: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 1621: (state = BLOCKED) > - java.lang.Object.wait(long) @bci=0 (Interpreted frame) > - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.await() @bci=8, line=458 > (Interpreted frame) > - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=11, line=484 > (Interpreted frame) > - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) > > > Thread 531: (state = BLOCKED) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeMemory.writeObjGCEvent(long) > @bci=12, line=363 (Compiled frame) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeObjLiveness.signalObjGC(org.netbeans.lib.profiler.server.ProfilerRuntimeObjLiveness$ProfilerRuntimeObjLivenessWeakRef) > @bci=13, line=233 (Compiled frame) > - > org.netbeans.lib.profiler.server.ProfilerRuntimeObjLiveness$ReferenceManagerThread.run() > @bci=25, line=92 (Compiled frame) > >
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