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From Pid <...@pidster.com>
Subject Re: Restarting tomcat 7.0.23 on MAC OS X 10.6
Date Tue, 24 Jan 2012 08:26:35 GMT
On 24/01/2012 07:35, Oliver Due Billing wrote:
> Did a thread dump.. I have some locked threads and it just keeps going, any
> smoking gun here?
> 
> Oliver-Billings-MacBook-Pro:bin ob$ sudo jstack -l 18866
> 2012-01-24 08:26:03
> Full thread dump Java HotSpot(TM) 64-Bit Server VM (20.4-b02-402 mixed
> mode):
> 
> "http-bio-80-exec-11" daemon prio=5 tid=10d0e2000 nid=0x116732000 waiting
> on condition [116731000]
>    java.lang.Thread.State: WAITING (parking)
>     at sun.misc.Unsafe.park(Native Method)
>     - parking to wait for  <7f49d0798> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
>     at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
>     at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:104)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:32)
>     at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Attach Listener" daemon prio=9 tid=101d5e800 nid=0x111fd9000 waiting on
> condition [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None

So, just to confirm, did you stop this Tomcat instance and then generate
the thread dump?

I ask because all of the application threads are daemon threads and
don't appear to be blocked...


p


> "GameSessionDB.DBUpdateEventJob" daemon prio=5 tid=10d4df800
> nid=0x1164ee000 waiting on condition [1164ed000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> com.watagame.gosupermodel.gamesession.GameSessionDB$DBUpdateEventJob.run(GameSessionDB.java:513)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "GameSessionDB.DBUpdateEventJob" daemon prio=5 tid=103e06800
> nid=0x129203000 waiting on condition [129202000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> com.watagame.gosupermodel.gamesession.GameSessionDB$DBUpdateEventJob.run(GameSessionDB.java:513)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "GameSessionDB.DBUpdateEventJob" daemon prio=5 tid=103a7d800
> nid=0x111a04000 waiting on condition [111a03000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> com.watagame.gosupermodel.gamesession.GameSessionDB$DBUpdateEventJob.run(GameSessionDB.java:513)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "http-bio-80-exec-10" daemon prio=5 tid=101b79800 nid=0x12a9aa000 waiting
> on condition [12a9a9000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:126)
>     at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
>     at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
>     at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
>     at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
>     at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>     at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
>     at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
>     at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
>     - locked <7f42a96f0> (a org.apache.tomcat.util.net.SocketWrapper)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - <7f48c81a0> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> 
> "http-bio-80-exec-9" daemon prio=5 tid=103fc5800 nid=0x12a66c000 waiting on
> condition [12a66b000]
>    java.lang.Thread.State: WAITING (parking)
>     at sun.misc.Unsafe.park(Native Method)
>     - parking to wait for  <7f49d0798> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
>     at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
>     at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:104)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:32)
>     at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "http-bio-80-exec-8" daemon prio=5 tid=10d350000 nid=0x12a569000 waiting on
> condition [12a568000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:126)
>     at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
>     at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
>     at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
>     at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
>     at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>     at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
>     at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
>     at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
>     - locked <7f423be98> (a org.apache.tomcat.util.net.SocketWrapper)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - <7f4866088> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> 
> "http-bio-80-exec-7" daemon prio=5 tid=10f0da000 nid=0x129bc1000 waiting on
> condition [129bc0000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:126)
>     at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
>     at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
>     at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
>     at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
>     at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>     at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
>     at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
>     at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
>     - locked <7f42ab620> (a org.apache.tomcat.util.net.SocketWrapper)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - <7f480d6f8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> 
> "http-bio-80-exec-6" daemon prio=5 tid=10e923000 nid=0x129abe000 waiting on
> condition [129abd000]
>    java.lang.Thread.State: WAITING (parking)
>     at sun.misc.Unsafe.park(Native Method)
>     - parking to wait for  <7f49d0798> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
>     at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
>     at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:104)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:32)
>     at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "http-bio-80-exec-5" daemon prio=5 tid=10e922800 nid=0x1299bb000 waiting on
> condition [1299ba000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:126)
>     at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
>     at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
>     at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
>     at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
>     at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>     at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
>     at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
>     at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
>     - locked <7f42a33b0> (a org.apache.tomcat.util.net.SocketWrapper)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - <7f4a84548> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> 
> "http-bio-80-exec-4" daemon prio=5 tid=10f009800 nid=0x1298b8000 waiting on
> condition [1298b7000]
>    java.lang.Thread.State: WAITING (parking)
>     at sun.misc.Unsafe.park(Native Method)
>     - parking to wait for  <7f49d0798> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
>     at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
>     at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:104)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:32)
>     at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "http-bio-80-exec-2" daemon prio=5 tid=110003000 nid=0x1296b2000 waiting on
> condition [1296b1000]
>    java.lang.Thread.State: WAITING (parking)
>     at sun.misc.Unsafe.park(Native Method)
>     - parking to wait for  <7f49d0798> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
>     at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
>     at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
>     at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:104)
>     at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:32)
>     at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "http-bio-80-exec-1" daemon prio=5 tid=1018fb800 nid=0x10e21c000 waiting on
> condition [10e21b000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:126)
>     at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
>     at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
>     at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
>     at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:928)
>     at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>     at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
>     at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
>     at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:298)
>     - locked <7f42a99a8> (a org.apache.tomcat.util.net.SocketWrapper)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - <7f475e560> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
> 
> "http-bio-80-AsyncTimeout" daemon prio=5 tid=10c422000 nid=0x129100000
> waiting on condition [1290ff000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$AsyncTimeout.run(JIoEndpoint.java:136)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "http-bio-80-Acceptor-0" daemon prio=5 tid=10c507800 nid=0x128ffd000
> runnable [128ffc000]
>    java.lang.Thread.State: RUNNABLE
>     at java.net.PlainSocketImpl.socketAccept(Native Method)
>     at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:408)
>     - locked <7f4558f10> (a java.net.SocksSocketImpl)
>     at java.net.ServerSocket.implAccept(ServerSocket.java:462)
>     at java.net.ServerSocket.accept(ServerSocket.java:430)
>     at
> org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:60)
>     at
> org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:207)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Java2D Disposer" daemon prio=10 tid=10c3e5000 nid=0x112cd1000 in
> Object.wait() [112cd0000]
>    java.lang.Thread.State: WAITING (on object monitor)
>     at java.lang.Object.wait(Native Method)
>     - waiting on <7f495e630> (a java.lang.ref.ReferenceQueue$Lock)
>     at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
>     - locked <7f495e630> (a java.lang.ref.ReferenceQueue$Lock)
>     at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
>     at sun.java2d.Disposer.run(Disposer.java:127)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "AWT-AppKit" daemon prio=5 tid=103a05800 nid=0x7fff703b3cc0 runnable
> [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Poller SunPKCS11-Darwin" daemon prio=1 tid=10c75b800 nid=0x10fcb8000
> waiting on condition [10fcb7000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at sun.security.pkcs11.SunPKCS11$TokenPoller.run(SunPKCS11.java:692)
>     at java.lang.Thread.run(Thread.java:680)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Low Memory Detector" daemon prio=5 tid=10d000000 nid=0x10bf0d000 runnable
> [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None
> 
> "C2 CompilerThread1" daemon prio=9 tid=10c00f000 nid=0x10be0a000 waiting on
> condition [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None
> 
> "C2 CompilerThread0" daemon prio=9 tid=101801800 nid=0x10bd07000 waiting on
> condition [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Signal Dispatcher" daemon prio=9 tid=101801000 nid=0x10bc04000 runnable
> [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Surrogate Locker Thread (Concurrent GC)" daemon prio=5 tid=103947800
> nid=0x10bb01000 waiting on condition [00000000]
>    java.lang.Thread.State: RUNNABLE
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Finalizer" daemon prio=8 tid=10393f000 nid=0x10b7ff000 in Object.wait()
> [10b7fe000]
>    java.lang.Thread.State: WAITING (on object monitor)
>     at java.lang.Object.wait(Native Method)
>     - waiting on <7f44d1fa0> (a java.lang.ref.ReferenceQueue$Lock)
>     at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
>     - locked <7f44d1fa0> (a java.lang.ref.ReferenceQueue$Lock)
>     at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
>     at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "Reference Handler" daemon prio=10 tid=10393e000 nid=0x10b6fc000 in
> Object.wait() [10b6fb000]
>    java.lang.Thread.State: WAITING (on object monitor)
>     at java.lang.Object.wait(Native Method)
>     - waiting on <7f44c0840> (a java.lang.ref.Reference$Lock)
>     at java.lang.Object.wait(Object.java:485)
>     at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
>     - locked <7f44c0840> (a java.lang.ref.Reference$Lock)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "main" prio=5 tid=103800800 nid=0x100501000 runnable [1004ff000]
>    java.lang.Thread.State: RUNNABLE
>     at java.net.PlainSocketImpl.socketAccept(Native Method)
>     at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:408)
>     - locked <7f4b4b4e8> (a java.net.SocksSocketImpl)
>     at java.net.ServerSocket.implAccept(ServerSocket.java:462)
>     at java.net.ServerSocket.accept(ServerSocket.java:430)
>     at
> org.apache.catalina.core.StandardServer.await(StandardServer.java:447)
>     at org.apache.catalina.startup.Catalina.await(Catalina.java:706)
>     at org.apache.catalina.startup.Catalina.start(Catalina.java:652)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>     at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
>     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450)
> 
>    Locked ownable synchronizers:
>     - None
> 
> "VM Thread" prio=9 tid=103939800 nid=0x10b5f9000 runnable
> 
> "Gang worker#0 (Parallel GC Threads)" prio=9 tid=103802000 nid=0x102501000
> runnable
> 
> "Gang worker#1 (Parallel GC Threads)" prio=9 tid=103802800 nid=0x102604000
> runnable
> 
> "Gang worker#2 (Parallel GC Threads)" prio=9 tid=103803000 nid=0x102707000
> runnable
> 
> "Gang worker#3 (Parallel GC Threads)" prio=9 tid=103804000 nid=0x107102000
> runnable
> 
> "Gang worker#4 (Parallel GC Threads)" prio=9 tid=103804800 nid=0x107205000
> runnable
> 
> "Gang worker#5 (Parallel GC Threads)" prio=9 tid=103805000 nid=0x107308000
> runnable
> 
> "Gang worker#6 (Parallel GC Threads)" prio=9 tid=103805800 nid=0x10740b000
> runnable
> 
> "Gang worker#7 (Parallel GC Threads)" prio=9 tid=103806800 nid=0x10750e000
> runnable
> 
> "Concurrent Mark-Sweep GC Thread" prio=9 tid=1038e3800 nid=0x10b305000
> runnable
> "Gang worker#0 (Parallel CMS Threads)" prio=9 tid=1038e2800 nid=0x10a8ff000
> runnable
> 
> "Gang worker#1 (Parallel CMS Threads)" prio=9 tid=1038e3000 nid=0x10aa02000
> runnable
> 
> "VM Periodic Task Thread" prio=10 tid=10d00a000 nid=0x10ca01000 waiting on
> condition
> 
> "Exception Catcher Thread" prio=10 tid=103801800 nid=0x1017f9000 runnable
> JNI global references: 1765
> 
> 
> 2012/1/23 Caldarale, Charles R <Chuck.Caldarale@unisys.com>
> 
>>> From: Oliver Due Billing [mailto:ob@watagame.com]
>>> Subject: Restarting tomcat 7.0.23 on MAC OS X 10.6
>>
>>> I have a test-server on my macbook pro and it takes forever to
>>> restart the server do anyone have a clue to whats happening.
>>
>> It may be collecting entropy.  Take a thread dump, and see what the JVM is
>> doing during the pause.
>>
>> You can try setting
>>
>>   -Djava.security.egd=file:/dev/./urandom
>>
>> as a system property.  Note that the apparently extra "/." is required to
>> trick the JVM into using the alternate random byte source.
>>
>>  - Chuck
>>
>>
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>> MATERIAL and is thus for use only by the intended recipient. If you
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>>
>>
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>>
> 
> 


-- 

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