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Posted to users@tomcat.apache.org by Ch...@labware.com on 2008/09/23 11:20:24 UTC
Tomcat6.0.18+Log entries upon shutting down TomCat
Hi All,
My first question in this forum . I am load testing our
webapp using Jmeter . The test was configured to simulate 50 simultaneous
users . After running the test for about 18hours or so , I decided to
shutdown Tomcat and after executing shutdown.bat file , I got the
following messages inside catalina.2008-09-23.log . At the time when I
stopped Tomcat, Jmeter was showing as all the 50 threads up and running .
My question :
1. What this line INFO: Waiting for 253,020 instance(s) to be deallocated
means ?
2. Are these messages worrisome from the application point of view ?
.
Sep 23, 2008 1:53:38 PM org.apache.coyote.http11.Http11Protocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 253,020 instance(s) to be deallocated
Sep 23, 2008 1:53:40 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 253,016 instance(s) to be deallocated
Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 253,015 instance(s) to be deallocated
Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 42 instance(s) to be deallocated
Sep 23, 2008 1:53:42 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 42 instance(s) to be deallocated
Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 42 instance(s) to be deallocated
Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 7,570 instance(s) to be deallocated
Sep 23, 2008 1:53:44 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 7,570 instance(s) to be deallocated
Sep 23, 2008 1:53:45 PM org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 7,570 instance(s) to be deallocated
Sep 23, 2008 1:53:53 PM org.apache.coyote.http11.Http11Protocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8080
Regards,
Subhrajyoti
Mobile: +919830079545
Mail: choudhury@labware.com
Web: www.labware.com
LabWare LIMS Solutions - Results Count
Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Posted by Mark Thomas <ma...@apache.org>.
Johnny Kewl wrote:
> Look I dont know, I've never seen this, we dont run the latest as policy...
> But I would drop back a few TC versions...
Given http://tomcat.apache.org/security-6.html, downgrading is really bad
advice. Added to which, it won't change anything.
> I think a wrapper represents a servlet instance... (guess)... and
> 253,020 sounds like a huge number.
It is, and my previous on this thread explains it.
> I think you should be concerned... whether it is a TC issue or a Webapp
> issue you only going to discover if you try a few TC's that have been
> around for a while...
Trying different Tomcat versions isn't going to help.
> I think document your entire system.... the JRE as well... and if it
> does not show in an earlier TC, let the dev group know....
No need, we already know. As would you if you had a) used Google, b) looked
in Bugzilla or c) searched the archives for this list.
> The thing that would tell you that there is definitely an issue, is if
> you watch the memory during the load test... if thats getting less and
> less with time.... its crashing...
I think you mean free memory here. Increasing memory usage during a load
test isn't necessarily an issue as long as it levels off eventually. If you
suspect a memory leak the only real way to be sure is to use a profiler and
look at the actual usage.
> It seems to be holding servlets in memory and making new ones... it may
> not be TC... you now have to experiment....
No need to experiment. A little research was all that was required.
Mark
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Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Posted by Johnny Kewl <jo...@kewlstuff.co.za>.
Subhrajyoti
Look I dont know, I've never seen this, we dont run the latest as policy...
But I would drop back a few TC versions...
I think a wrapper represents a servlet instance... (guess)... and 253,020
sounds like a huge number.
I think you should be concerned... whether it is a TC issue or a Webapp
issue you only going to discover if you try a few TC's that have been around
for a while...
I think document your entire system.... the JRE as well... and if it does
not show in an earlier TC, let the dev group know....
The thing that would tell you that there is definitely an issue, is if you
watch the memory during the load test... if thats getting less and less with
time.... its crashing...
It seems to be holding servlets in memory and making new ones... it may not
be TC... you now have to experiment....
... it doesnt look right... but then it may be that your system is just
enormous ;)
... or some new feature in the latest TC ??
I think you right been concerned... doesnt smell right ;)
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---------------------------------------------------------------------------
----- Original Message -----
From: <Ch...@labware.com>
To: <us...@tomcat.apache.org>
Sent: Tuesday, September 23, 2008 11:20 AM
Subject: Tomcat6.0.18+Log entries upon shutting down TomCat
> Hi All,
> My first question in this forum . I am load testing our
> webapp using Jmeter . The test was configured to simulate 50 simultaneous
> users . After running the test for about 18hours or so , I decided to
> shutdown Tomcat and after executing shutdown.bat file , I got the
> following messages inside catalina.2008-09-23.log . At the time when I
> stopped Tomcat, Jmeter was showing as all the 50 threads up and running .
> My question :
>
> 1. What this line INFO: Waiting for 253,020 instance(s) to be deallocated
> means ?
> 2. Are these messages worrisome from the application point of view ?
> .
>
> Sep 23, 2008 1:53:38 PM org.apache.coyote.http11.Http11Protocol pause
> INFO: Pausing Coyote HTTP/1.1 on http-8080
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardService stop
> INFO: Stopping service Catalina
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,020 instance(s) to be deallocated
> Sep 23, 2008 1:53:40 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,016 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,015 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:42 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:44 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:45 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:53 PM org.apache.coyote.http11.Http11Protocol destroy
> INFO: Stopping Coyote HTTP/1.1 on http-8080
>
>
> Regards,
>
> Subhrajyoti
> Mobile: +919830079545
> Mail: choudhury@labware.com
> Web: www.labware.com
>
> LabWare LIMS Solutions - Results Count
---------------------------------------------------------------------
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Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Posted by Mark Thomas <ma...@apache.org>.
Choudhury@labware.com wrote:
> Guys,
> As a load tester should I have to worry about the INFO
> messages mentioned below in this thread
They are INFO messages so it is reasonable to assume that they are for
information rather than anything to worry about.
> ....I am getting no clue as to where they creep from ?
Did you try Googling for "instance(s) to be deallocated"?
> Is it Tomcat problem or our application problem?
That the numbers are unrealistically high is a known Tomcat bug but not one
that will cause any real harm.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45608
You might have some long running requests hanging around which could be an
application issue but you'll need to use other means (eg thread dump) to
figure out if that is the case.
Mark
> Any insights ?
> Regards,
>
> Subhrajyoti
> Mobile: +919830079545
> Mail: choudhury@labware.com
> Web: www.labware.com
>
> LabWare LIMS Solutions - Results Count
>
>
>
> Heiko Klein <He...@met.no>
> 09/23/2008 03:52 PM
> Please respond to
> "Tomcat Users List" <us...@tomcat.apache.org>
>
>
> To
> Tomcat Users List <us...@tomcat.apache.org>
> cc
>
> Subject
> Re: Tomcat6.0.18+Log entries upon shutting down TomCat
>
>
>
>
>
>
> Hi Subhrajyoti,
>
> I don't know an answer for your question, but I got exactly the same
> problems after upgrading from Tomcat 6.0.14 to 6.0.18. This problem
> happenend when using APR. After switching back to 6.0.14, my problem
> disappeared. Are you using APR, too? I think this is worrisome for an
> application, because my tomcat started to freeze completely after all
> threads had been in this 'waiting for deallocation' state.
>
> Best regards,
>
> Heiko
>
> Choudhury@labware.com wrote:
>> Hi All,
>> My first question in this forum . I am load testing our
>> webapp using Jmeter . The test was configured to simulate 50
> simultaneous
>> users . After running the test for about 18hours or so , I decided to
>> shutdown Tomcat and after executing shutdown.bat file , I got the
>> following messages inside catalina.2008-09-23.log . At the time when I
>> stopped Tomcat, Jmeter was showing as all the 50 threads up and running
> .
>> My question :
>>
>> 1. What this line INFO: Waiting for 253,020 instance(s) to be
> deallocated
>> means ?
>> 2. Are these messages worrisome from the application point of view ?
>> .
>>
>> Sep 23, 2008 1:53:38 PM org.apache.coyote.http11.Http11Protocol pause
>> INFO: Pausing Coyote HTTP/1.1 on http-8080
>> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardService stop
>> INFO: Stopping service Catalina
>> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 253,020 instance(s) to be deallocated
>> Sep 23, 2008 1:53:40 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 253,016 instance(s) to be deallocated
>> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 253,015 instance(s) to be deallocated
>> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 42 instance(s) to be deallocated
>> Sep 23, 2008 1:53:42 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 42 instance(s) to be deallocated
>> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 42 instance(s) to be deallocated
>> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 7,570 instance(s) to be deallocated
>> Sep 23, 2008 1:53:44 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 7,570 instance(s) to be deallocated
>> Sep 23, 2008 1:53:45 PM org.apache.catalina.core.StandardWrapper unload
>> INFO: Waiting for 7,570 instance(s) to be deallocated
>> Sep 23, 2008 1:53:53 PM org.apache.coyote.http11.Http11Protocol destroy
>> INFO: Stopping Coyote HTTP/1.1 on http-8080
>>
>>
>> Regards,
>>
>> Subhrajyoti
>> Mobile: +919830079545
>> Mail: choudhury@labware.com
>> Web: www.labware.com
>>
>> LabWare LIMS Solutions - Results Count
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
>
---------------------------------------------------------------------
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Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Posted by Ch...@labware.com.
Guys,
As a load tester should I have to worry about the INFO
messages mentioned below in this thread ....I am getting no clue as to
where they creep from ?Is it Tomcat problem or our application problem?
Any insights ?
Regards,
Subhrajyoti
Mobile: +919830079545
Mail: choudhury@labware.com
Web: www.labware.com
LabWare LIMS Solutions - Results Count
Heiko Klein <He...@met.no>
09/23/2008 03:52 PM
Please respond to
"Tomcat Users List" <us...@tomcat.apache.org>
To
Tomcat Users List <us...@tomcat.apache.org>
cc
Subject
Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Hi Subhrajyoti,
I don't know an answer for your question, but I got exactly the same
problems after upgrading from Tomcat 6.0.14 to 6.0.18. This problem
happenend when using APR. After switching back to 6.0.14, my problem
disappeared. Are you using APR, too? I think this is worrisome for an
application, because my tomcat started to freeze completely after all
threads had been in this 'waiting for deallocation' state.
Best regards,
Heiko
Choudhury@labware.com wrote:
> Hi All,
> My first question in this forum . I am load testing our
> webapp using Jmeter . The test was configured to simulate 50
simultaneous
> users . After running the test for about 18hours or so , I decided to
> shutdown Tomcat and after executing shutdown.bat file , I got the
> following messages inside catalina.2008-09-23.log . At the time when I
> stopped Tomcat, Jmeter was showing as all the 50 threads up and running
.
> My question :
>
> 1. What this line INFO: Waiting for 253,020 instance(s) to be
deallocated
> means ?
> 2. Are these messages worrisome from the application point of view ?
> .
>
> Sep 23, 2008 1:53:38 PM org.apache.coyote.http11.Http11Protocol pause
> INFO: Pausing Coyote HTTP/1.1 on http-8080
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardService stop
> INFO: Stopping service Catalina
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,020 instance(s) to be deallocated
> Sep 23, 2008 1:53:40 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,016 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,015 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:42 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:44 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:45 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:53 PM org.apache.coyote.http11.Http11Protocol destroy
> INFO: Stopping Coyote HTTP/1.1 on http-8080
>
>
> Regards,
>
> Subhrajyoti
> Mobile: +919830079545
> Mail: choudhury@labware.com
> Web: www.labware.com
>
> LabWare LIMS Solutions - Results Count
---------------------------------------------------------------------
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Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Posted by Ch...@labware.com.
No I am not using APR if ofcourse it is not used by default.....:)
Regards,
Subhrajyoti
Mobile: +919830079545
Mail: choudhury@labware.com
Web: www.labware.com
LabWare LIMS Solutions - Results Count
Heiko Klein <He...@met.no>
09/23/2008 03:52 PM
Please respond to
"Tomcat Users List" <us...@tomcat.apache.org>
To
Tomcat Users List <us...@tomcat.apache.org>
cc
Subject
Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Hi Subhrajyoti,
I don't know an answer for your question, but I got exactly the same
problems after upgrading from Tomcat 6.0.14 to 6.0.18. This problem
happenend when using APR. After switching back to 6.0.14, my problem
disappeared. Are you using APR, too? I think this is worrisome for an
application, because my tomcat started to freeze completely after all
threads had been in this 'waiting for deallocation' state.
Best regards,
Heiko
Choudhury@labware.com wrote:
> Hi All,
> My first question in this forum . I am load testing our
> webapp using Jmeter . The test was configured to simulate 50
simultaneous
> users . After running the test for about 18hours or so , I decided to
> shutdown Tomcat and after executing shutdown.bat file , I got the
> following messages inside catalina.2008-09-23.log . At the time when I
> stopped Tomcat, Jmeter was showing as all the 50 threads up and running
.
> My question :
>
> 1. What this line INFO: Waiting for 253,020 instance(s) to be
deallocated
> means ?
> 2. Are these messages worrisome from the application point of view ?
> .
>
> Sep 23, 2008 1:53:38 PM org.apache.coyote.http11.Http11Protocol pause
> INFO: Pausing Coyote HTTP/1.1 on http-8080
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardService stop
> INFO: Stopping service Catalina
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,020 instance(s) to be deallocated
> Sep 23, 2008 1:53:40 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,016 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,015 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:42 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:44 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:45 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:53 PM org.apache.coyote.http11.Http11Protocol destroy
> INFO: Stopping Coyote HTTP/1.1 on http-8080
>
>
> Regards,
>
> Subhrajyoti
> Mobile: +919830079545
> Mail: choudhury@labware.com
> Web: www.labware.com
>
> LabWare LIMS Solutions - Results Count
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
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Re: Tomcat6.0.18+Log entries upon shutting down TomCat
Posted by Heiko Klein <He...@met.no>.
Hi Subhrajyoti,
I don't know an answer for your question, but I got exactly the same
problems after upgrading from Tomcat 6.0.14 to 6.0.18. This problem
happenend when using APR. After switching back to 6.0.14, my problem
disappeared. Are you using APR, too? I think this is worrisome for an
application, because my tomcat started to freeze completely after all
threads had been in this 'waiting for deallocation' state.
Best regards,
Heiko
Choudhury@labware.com wrote:
> Hi All,
> My first question in this forum . I am load testing our
> webapp using Jmeter . The test was configured to simulate 50 simultaneous
> users . After running the test for about 18hours or so , I decided to
> shutdown Tomcat and after executing shutdown.bat file , I got the
> following messages inside catalina.2008-09-23.log . At the time when I
> stopped Tomcat, Jmeter was showing as all the 50 threads up and running .
> My question :
>
> 1. What this line INFO: Waiting for 253,020 instance(s) to be deallocated
> means ?
> 2. Are these messages worrisome from the application point of view ?
> .
>
> Sep 23, 2008 1:53:38 PM org.apache.coyote.http11.Http11Protocol pause
> INFO: Pausing Coyote HTTP/1.1 on http-8080
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardService stop
> INFO: Stopping service Catalina
> Sep 23, 2008 1:53:39 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,020 instance(s) to be deallocated
> Sep 23, 2008 1:53:40 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,016 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 253,015 instance(s) to be deallocated
> Sep 23, 2008 1:53:41 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:42 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 42 instance(s) to be deallocated
> Sep 23, 2008 1:53:43 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:44 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:45 PM org.apache.catalina.core.StandardWrapper unload
> INFO: Waiting for 7,570 instance(s) to be deallocated
> Sep 23, 2008 1:53:53 PM org.apache.coyote.http11.Http11Protocol destroy
> INFO: Stopping Coyote HTTP/1.1 on http-8080
>
>
> Regards,
>
> Subhrajyoti
> Mobile: +919830079545
> Mail: choudhury@labware.com
> Web: www.labware.com
>
> LabWare LIMS Solutions - Results Count
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
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