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Posted to users@tomcat.apache.org by Ba...@telenor.com on 2014/10/03 10:25:11 UTC
RE: tomcat crash problem (INTERNAL)
Hi Ognjen,
Tomcat is crashing with the below error message.
java.lang.OutOfMemoryError: GC overhead limit exceeded
This problem is occurring in our production environment so as a workaround we are restarting tomcat two times in the business hours. Due to these restarts tomcat is not crashing.
Here am attached some GC logs.
Regards,
Subbu.
-----Original Message-----
From: Ognjen Blagojevic [mailto:ognjen.d.blagojevic@gmail.com]
Sent: 3. oktober 2014 10:00
To: Tomcat Users List
Subject: Re: tomcat crash problem (OPEN)
Subbu,
3.10.2014 9:38, Bala-Subrahmanyam.Bhatta@telenor.com wrote:
> I upgraded tomcat from 5.0.28 to 6.0.36, after upgrade tomcat server is consuming lot of memory and once if memory reaches to 3GB then it is crashing (max memory I configured is 3GB).
What kind of a crash is that? Does JVM crashes (look for a file named hs_err_pid*), or Tomcat (look at Tomcat logs)? Send us the log files.
We need more information before we can diagnose the problem.
-Ognjen
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Re: tomcat crash problem (INTERNAL)
Posted by Yogesh Rao <yo...@gmail.com>.
Subbu,
You either could analyse the applications heap usage as ognjen suggested or
If possible try deploying the application with the latest release of tomcat
6 (6.0.41) . There could have been patches released which could have fixed
the issue.
Regards,
-Yogesh
On Fri, Oct 3, 2014 at 4:17 PM, Ognjen Blagojevic <
ognjen.d.blagojevic@gmail.com> wrote:
> Subbu,
>
> On 3.10.2014 10:25, Bala-Subrahmanyam.Bhatta@telenor.com wrote:
>
>> Hi Ognjen,
>>
>> Tomcat is crashing with the below error message.
>>
>> java.lang.OutOfMemoryError: GC overhead limit exceeded
>>
>
> Please, reply below the quotes, it is standard on this list.
>
> Tomcat have small memory footprint, way below 3 GB you allocate for JVM.
> So, it is probably your application data filling this 3 GB of memory. The
> above error says that garbage collector is struggling to release the
> memory, but it consumes to much CPU cycles and releases too little memory.
> This usually results in dramatic server slowdowns, so JVM decides to throw
> an error and inform you about the problem.
>
> You should analyze your application heap usage with the profiler to
> determine what objects are holding references so GC is unable to free more
> memory. If you don't need those objects, clear the references. If you
> really need all those objects, throw more memory at the server.
>
> Please read:
>
> http://wiki.apache.org/tomcat/OutOfMemory
>
>
> -Ognjen
>
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>
Re: tomcat crash problem (INTERNAL)
Posted by Ognjen Blagojevic <og...@gmail.com>.
Subbu,
On 3.10.2014 10:25, Bala-Subrahmanyam.Bhatta@telenor.com wrote:
> Hi Ognjen,
>
> Tomcat is crashing with the below error message.
>
> java.lang.OutOfMemoryError: GC overhead limit exceeded
Please, reply below the quotes, it is standard on this list.
Tomcat have small memory footprint, way below 3 GB you allocate for JVM.
So, it is probably your application data filling this 3 GB of memory.
The above error says that garbage collector is struggling to release the
memory, but it consumes to much CPU cycles and releases too little
memory. This usually results in dramatic server slowdowns, so JVM
decides to throw an error and inform you about the problem.
You should analyze your application heap usage with the profiler to
determine what objects are holding references so GC is unable to free
more memory. If you don't need those objects, clear the references. If
you really need all those objects, throw more memory at the server.
Please read:
http://wiki.apache.org/tomcat/OutOfMemory
-Ognjen
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