I'm still frustrated by this freeze. Looking at this thread dump, I can see it
must be the "main" thread that's hanging - but how can I work out anything more
regarding the problem?
I've done all I can think of to open up the machine it's running on - stopping
all other unnecessary processes such as the firewall, apache, the DNS server etc.
Could tomcat be waiting in vain for a port? As far as I can tell, it should be
using 8080 and 8005 - nothing else is set up in server.xml. Yet these ports are
free on the machine. Is there a linux tool I can use to check those ports?
Thanks
Adam
-------- Original Message --------
Date: Mon, 19 May 2008 23:13:02 +0100
19-May-2008 23:04:32 org.apache.tomcat.util.modeler.BaseModelMBean preRegister
FINE: preRegister [EMAIL PROTECTED]
Catalina:type=Connector,port=8080
Full thread dump Java HotSpot(TM) Client VM (1.5.0_12-b04 mixed mode, sharing):
"Low Memory Detector" daemon prio=1 tid=0x0809e1a8 nid=0xe39 runnable
[0x00000000..0x00000000]
"CompilerThread0" daemon prio=1 tid=0x0809cc40 nid=0xe38 waiting on condition
[0x00000000..0xb2176828]
"Signal Dispatcher" daemon prio=1 tid=0x0809bd60 nid=0xe37 runnable
[0x00000000..0x00000000]
"Finalizer" daemon prio=1 tid=0x08094f38 nid=0xe36 in Object.wait()
[0xb23a0000..0xb23a1140]
at java.lang.Object.wait(Native Method)
- waiting on <0x88e609e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
- locked <0x88e609e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
"Reference Handler" daemon prio=1 tid=0x08094240 nid=0xe35 in Object.wait()
[0xb2421000..0xb24220c0]
at java.lang.Object.wait(Native Method)
- waiting on <0x88e60910> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:474)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
- locked <0x88e60910> (a java.lang.ref.Reference$Lock)
"main" prio=1 tid=0x080557c8 nid=0xe33 runnable [0xbf8d6000..0xbf8d8078]
at java.net.PlainSocketImpl.initProto(Native Method)
at java.net.PlainSocketImpl.<clinit>(PlainSocketImpl.java:84)
at java.net.ServerSocket.setImpl(ServerSocket.java:236)
at java.net.ServerSocket.<init>(ServerSocket.java:178)
at java.net.ServerSocket.<init>(ServerSocket.java:141)
at
org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:50)
at org.apache.tomcat.util.net.JIoEndpoint.init(JIoEndpoint.java:496)
at org.apache.coyote.http11.Http11Protocol.init(Http11Protocol.java:177)
at
org.apache.catalina.connector.Connector.initialize(Connector.java:1059)
at
org.apache.catalina.core.StandardService.initialize(StandardService.java:677)
- locked <0x88f6e690> (a [Lorg.apache.catalina.connector.Connector;)
at
org.apache.catalina.core.StandardServer.initialize(StandardServer.java:792)
at org.apache.catalina.startup.Catalina.load(Catalina.java:518)
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:585)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:260)
at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:275)
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:585)
at
org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:160)
"VM Thread" prio=1 tid=0x08092e48 nid=0xe34 runnable
"VM Periodic Task Thread" prio=1 tid=0x0809f650 nid=0xe3a waiting on condition
Full thread dump Java HotSpot(TM) Client VM (1.5.0_12-b04 mixed mode, sharing):
"Low Memory Detector" daemon prio=1 tid=0x0809e1a8 nid=0xe39 runnable
[0x00000000..0x00000000]
"CompilerThread0" daemon prio=1 tid=0x0809cc40 nid=0xe38 waiting on condition
[0x00000000..0xb2176828]
"Signal Dispatcher" daemon prio=1 tid=0x0809bd60 nid=0xe37 runnable
[0x00000000..0x00000000]
"Finalizer" daemon prio=1 tid=0x08094f38 nid=0xe36 in Object.wait()
[0xb23a0000..0xb23a1140]
at java.lang.Object.wait(Native Method)
- waiting on <0x88e609e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
- locked <0x88e609e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
"Reference Handler" daemon prio=1 tid=0x08094240 nid=0xe35 in Object.wait()
[0xb2421000..0xb24220c0]
at java.lang.Object.wait(Native Method)
- waiting on <0x88e60910> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:474)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
- locked <0x88e60910> (a java.lang.ref.Reference$Lock)
"main" prio=1 tid=0x080557c8 nid=0xe33 runnable [0xbf8d6000..0xbf8d8078]
at java.net.PlainSocketImpl.initProto(Native Method)
at java.net.PlainSocketImpl.<clinit>(PlainSocketImpl.java:84)
at java.net.ServerSocket.setImpl(ServerSocket.java:236)
at java.net.ServerSocket.<init>(ServerSocket.java:178)
at java.net.ServerSocket.<init>(ServerSocket.java:141)
at
org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:50)
at org.apache.tomcat.util.net.JIoEndpoint.init(JIoEndpoint.java:496)
at org.apache.coyote.http11.Http11Protocol.init(Http11Protocol.java:177)
at
org.apache.catalina.connector.Connector.initialize(Connector.java:1059)
at
org.apache.catalina.core.StandardService.initialize(StandardService.java:677)
- locked <0x88f6e690> (a [Lorg.apache.catalina.connector.Connector;)
at
org.apache.catalina.core.StandardServer.initialize(StandardServer.java:792)
at org.apache.catalina.startup.Catalina.load(Catalina.java:518)
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:585)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:260)
at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:275)
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:585)
at
org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:160)
"VM Thread" prio=1 tid=0x08092e48 nid=0xe34 runnable
"VM Periodic Task Thread" prio=1 tid=0x0809f650 nid=0xe3a waiting on condition
Filip Hanik - Dev Lists on 19/05/08 22:17, wrote:
just do two thread dumps during the freeze
kill -3 <tomcat process id>
sleep 5
kill -3 <tomcat process id>
the thread dump will identify where it is hanging, and it gets output to
std.out, by default to catalina.out
Filip
Adam Hardy wrote:
I've been trying to solve this problem for a couple of hours now and I
can't see any solution on google or in the archives.
I have tomcat 6.0.13 and java 1.5.0_12 running on debian linux 2.6, my
own installation, not the debian packages.
I stripped the tomcat config down to the bare minimum, no webapps, and
just the one connector configured:
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
It takes about 3 mins to start, as you can see from the logging below
at the point where BaseModelMBean tries to preregister.
The config works fine on my linux workstation, but not on this
machine. The machine is a gateway and DNS server also running Apache
on port 80, but even with the firewall and the servers down, I can't
get around this problem.
Can anybody help?
FINE: preRegister [EMAIL PROTECTED]
Catalina:type=StringCache
19-May-2008 17:22:58 org.apache.tomcat.util.modeler.Registry
registerComponent
FINE: Managed= Catalina:type=Service,serviceName=Catalina
19-May-2008 17:22:58 org.apache.tomcat.util.modeler.BaseModelMBean
preRegister
FINE: preRegister StandardService[Catalina]
Catalina:type=Service,serviceName=Catalina
19-May-2008 17:22:58 org.apache.tomcat.util.modeler.Registry
registerComponent
FINE: Managed= Catalina:type=Connector,port=8080
19-May-2008 17:22:58 org.apache.tomcat.util.modeler.BaseModelMBean
preRegister
FINE: preRegister [EMAIL PROTECTED]
Catalina:type=Connector,port=8080
19-May-2008 17:26:07 org.apache.tomcat.util.modeler.BaseModelMBean
preRegister
FINE: preRegister BaseModelMbean[null] Catalina:type=MBeanFactory
19-May-2008 17:26:07 org.apache.tomcat.util.modeler.BaseModelMBean
preRegister
FINE: preRegister null Catalina:type=MBeanFactory
19-May-2008 17:26:07 org.apache.tomcat.util.modeler.BaseModelMBean
preRegister
FINE: preRegister [EMAIL PROTECTED]
Catalina:type=NamingResources,resourcetype=Global
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
