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Posted to users@tomcat.apache.org by kk...@poczta.wp.pl on 2011/04/29 11:57:40 UTC
Tomcat stop responding without any reason
Hello,
Here is the configuration used:
1. MS Windows Server 2003 R2 SP2
2. 4GB RAM
3. Tomcat has set -Xmx to 1G
4. Tomcat 5.5.30
5. This is production environment
The server had been working for a long time quite well but one day it stopped responding (it did not respond on request) with weird logs in jakarta_service.log (see at the bottom).
Unfortunately I do not have information about processor and memory usage from hang moment. What these weird *s mean in the log? Is it the root cause of the issue. Moreover there are no additional messages in other Tomcat and application logs recorded.
jakarta_service.log content:
[2011-04-26 09:25:02] [info] Commons Daemon procrun (1.0.2.0) started
[2011-04-26 09:25:02] [info] Running Service...
[2011-04-26 09:25:17] [info] Starting service...
[2011-04-26 09:25:24] [info] Service started in 6500 ms.
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:24:25] [info] *s
[2011-04-28 10:26:46] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:20] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:27:52] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:26] [info] *s
[2011-04-28 10:28:57] [info] *s
[2011-04-28 10:28:57] [info] *s
[2011-04-28 10:29:29] [info] *s
[2011-04-28 10:29:29] [info] *s
[2011-04-28 10:30:05] [info] *s
[2011-04-28 10:30:05] [info] *s
[2011-04-28 10:30:41] [info] *s
[2011-04-28 10:30:41] [info] *s
[2011-04-28 10:31:24] [info] *s
[2011-04-28 10:31:24] [info] *s
[2011-04-28 10:31:58] [info] *s
[2011-04-28 10:31:58] [info] *s
[2011-04-28 10:32:35] [info] *s
[2011-04-28 10:32:35] [info] *s
[2011-04-28 10:33:13] [info] *s
[2011-04-28 10:33:13] [info] *s
[2011-04-28 10:33:50] [info] *s
[2011-04-28 10:33:50] [info] *s
[2011-04-28 10:34:29] [info] *s
[2011-04-28 10:34:29] [info] *s
[2011-04-28 10:35:06] [info] *s
[2011-04-28 10:35:06] [info] *s
[2011-04-28 10:35:46] [info] *s
[2011-04-28 10:35:46] [info] *s
[2011-04-28 10:36:25] [info] *s
[2011-04-28 10:36:25] [info] *s
[2011-04-28 10:37:04] [info] *s
[2011-04-28 10:37:04] [info] *s
[2011-04-28 10:37:45] [info] *s
[2011-04-28 10:37:45] [info] *s
[2011-04-28 10:38:26] [info] *s
[2011-04-28 10:38:26] [info] *s
[2011-04-28 10:39:06] [info] *s
[2011-04-28 10:39:06] [info] *s
[2011-04-28 10:39:43] [info] *s
[2011-04-28 10:39:43] [info] *s
[2011-04-28 10:40:22] [info] Stopping service...
[2011-04-28 10:40:22] [info] *s
[2011-04-28 10:40:22] [info] *s
[2011-04-28 10:41:01] [info] *s
[2011-04-28 10:41:01] [info] *s
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Re: Tomcat stop responding without any reason
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Hash: SHA1
kkazmierczyk,
On 4/30/2011 5:10 PM, kkazmierczyk@poczta.wp.pl wrote:
> I know what I can do in the future to diagnose it (gather thread
> dumps). The Java used is IBM JRE 5.0.
>
> Do you know what is the root cause of weird logs in
> jakarta_service.log (many following lines: [2011-04-28 10:24:25]
> [info] *s)?
I wonder if that is a bug that has been fixed in commons-daemon. Would
it be possible to upgrade? You are using 1.0.2.0 and it looks like
latest is 1.0.5. I would carefully read all the changelog documentation
(I couldn't find a changelog on commons-daemon site, unfortunately) to
make sure it will be compatible: the 1.0.6 RELEASE-NOTES.txt file says
that it is compatible with the 1.0.3 release... that probably means that
there were some incompatible changes made with that 1.0.3 release that
may be important to your environment.
- -chris
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Re: Tomcat stop responding without any reason
Posted by kk...@poczta.wp.pl.
Dnia 29-04-2011 o godz. 12:36 Konstantin Kolinko napisał(a):
> 2011/4/29 <kk...@poczta.wp.pl>:
> > Hello,
> > Here is the configuration used:
> > 1. MS Windows Server 2003 R2 SP2
> > 2. 4GB RAM
> > 3. Tomcat has set -Xmx to 1G
> > 4. Tomcat 5.5.30
> > 5. This is production environment
> >
> > The server had been working for a long time quite well but one day it
> stopped responding (it did not respond on request) with weird logs in
> jakarta_service.log (see at the bottom).
> >
> > Unfortunately I do not have information about processor and memory usage
> from hang moment. What these weird *s mean in the log? Is it the root
> cause of the issue. Moreover there are no additional messages in other
> Tomcat and application logs recorded.
> >
>
> Take 3 thread dumps in a row, several seconds apart. It should show
> what Tomcat is actually doing at the moment. See FAQ on how to make a
> thread dump:
>
> http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F
>
> BTW, usual causes of hangs are
>
> a) OutOfMemoryError, including out of memory in PermGen In the latter
> case Tomcat cannot load any new classes. PermGen can be exhausted if
> you have redeployed or restarted a webapp many times without
> restarting the server if there is a "PermGen" memory leak.
>
> b) waiting on a resource, e.g. unlimited waiting-for-connection
> timeout on a database pool (maxWait) -- if all Connector threads are
> waiting you won't be able to connect anymore
> c) deadlocks (bugs)
>
> b), c) can be seen in the thread dumps
>
>
> What is your Java version?
>
> Best regards,
> Konstantin Kolinko
>
Hello,
Thank you Konstantin for fast reply!
I know what I can do in the future to diagnose it (gather thread dumps). The Java used is IBM JRE 5.0.
Do you know what is the root cause of weird logs in jakarta_service.log (many following lines: [2011-04-28 10:24:25] [info] *s)?
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Re: Tomcat stop responding without any reason
Posted by Konstantin Kolinko <kn...@gmail.com>.
2011/4/29 <kk...@poczta.wp.pl>:
> Hello,
> Here is the configuration used:
> 1. MS Windows Server 2003 R2 SP2
> 2. 4GB RAM
> 3. Tomcat has set -Xmx to 1G
> 4. Tomcat 5.5.30
> 5. This is production environment
>
> The server had been working for a long time quite well but one day it stopped responding (it did not respond on request) with weird logs in jakarta_service.log (see at the bottom).
>
> Unfortunately I do not have information about processor and memory usage from hang moment. What these weird *s mean in the log? Is it the root cause of the issue. Moreover there are no additional messages in other Tomcat and application logs recorded.
>
Take 3 thread dumps in a row, several seconds apart. It should show
what Tomcat is actually doing at the moment. See FAQ on how to make a
thread dump:
http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F
BTW, usual causes of hangs are
a) OutOfMemoryError, including out of memory in PermGen In the latter
case Tomcat cannot load any new classes. PermGen can be exhausted if
you have redeployed or restarted a webapp many times without
restarting the server if there is a "PermGen" memory leak.
b) waiting on a resource, e.g. unlimited waiting-for-connection
timeout on a database pool (maxWait) -- if all Connector threads are
waiting you won't be able to connect anymore
c) deadlocks (bugs)
b), c) can be seen in the thread dumps
What is your Java version?
Best regards,
Konstantin Kolinko
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RE: Tomcat stop responding without any reason
Posted by Martin Gainty <mg...@hotmail.com>.
startup problems *usually occur* if you have a misconfiguration in your server.xml or perhaps context.xml for your ROOT webapp
we could provide greater assistance if you could you display both server.xml and context.xml declarators to group
Dziękuję
Martin
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> Date: Fri, 29 Apr 2011 11:57:40 +0200
> From: kkazmierczyk@poczta.wp.pl
> To: users@tomcat.apache.org
> Subject: Tomcat stop responding without any reason
>
> Hello,
> Here is the configuration used:
> 1. MS Windows Server 2003 R2 SP2
> 2. 4GB RAM
> 3. Tomcat has set -Xmx to 1G
> 4. Tomcat 5.5.30
> 5. This is production environment
>
> The server had been working for a long time quite well but one day it stopped responding (it did not respond on request) with weird logs in jakarta_service.log (see at the bottom).
>
> Unfortunately I do not have information about processor and memory usage from hang moment. What these weird *s mean in the log? Is it the root cause of the issue. Moreover there are no additional messages in other Tomcat and application logs recorded.
>
>
> jakarta_service.log content:
> [2011-04-26 09:25:02] [info] Commons Daemon procrun (1.0.2.0) started
> [2011-04-26 09:25:02] [info] Running Service...
> [2011-04-26 09:25:17] [info] Starting service...
> [2011-04-26 09:25:24] [info] Service started in 6500 ms.
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:24:25] [info] *s
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> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:26:46] [info] *s
> [2011-04-28 10:26:46] [info] *s
> [2011-04-28 10:26:46] [info] *s
> [2011-04-28 10:26:46] [info] *s
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> [2011-04-28 10:26:46] [info] *s
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> [2011-04-28 10:26:46] [info] *s
> [2011-04-28 10:24:25] [info] *s
> [2011-04-28 10:26:46] [info] *s
> [2011-04-28 10:27:20] [info] *s
> [2011-04-28 10:27:20] [info] *s
> [2011-04-28 10:27:20] [info] *s
> [2011-04-28 10:27:20] [info] *s
> [2011-04-28 10:27:52] [info] *s
> [2011-04-28 10:27:52] [info] *s
> [2011-04-28 10:27:52] [info] *s
> [2011-04-28 10:27:52] [info] *s
> [2011-04-28 10:28:26] [info] *s
> [2011-04-28 10:28:26] [info] *s
> [2011-04-28 10:28:26] [info] *s
> [2011-04-28 10:28:26] [info] *s
> [2011-04-28 10:28:57] [info] *s
> [2011-04-28 10:28:57] [info] *s
> [2011-04-28 10:29:29] [info] *s
> [2011-04-28 10:29:29] [info] *s
> [2011-04-28 10:30:05] [info] *s
> [2011-04-28 10:30:05] [info] *s
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> [2011-04-28 10:35:46] [info] *s
> [2011-04-28 10:35:46] [info] *s
> [2011-04-28 10:36:25] [info] *s
> [2011-04-28 10:36:25] [info] *s
> [2011-04-28 10:37:04] [info] *s
> [2011-04-28 10:37:04] [info] *s
> [2011-04-28 10:37:45] [info] *s
> [2011-04-28 10:37:45] [info] *s
> [2011-04-28 10:38:26] [info] *s
> [2011-04-28 10:38:26] [info] *s
> [2011-04-28 10:39:06] [info] *s
> [2011-04-28 10:39:06] [info] *s
> [2011-04-28 10:39:43] [info] *s
> [2011-04-28 10:39:43] [info] *s
> [2011-04-28 10:40:22] [info] Stopping service...
> [2011-04-28 10:40:22] [info] *s
> [2011-04-28 10:40:22] [info] *s
> [2011-04-28 10:41:01] [info] *s
> [2011-04-28 10:41:01] [info] *s
>
>
>
>
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