I tried this on my machine.  Restarted WSO2Carbon around 12 times. I got the
following permgen issue.

Exception in thread "State Saver" java.lang.OutOfMemoryError: PermGen space
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
    at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    .....................

Here are the details of Machine and JVM

Linux sameera-xps 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC
2009 x86_64 GNU/Linux

java version "1.6.0_13"
Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
Java HotSpot(TM) 64-Bit Server VM (build 11.3-b02, mixed mode)

Also I'v used the following JVM parameters

-Xms256m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m -d64
-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:-UseGCOverheadLimit
-XX:+CMSClassUnloadingEnabled -server

Sameera




On Fri, Mar 25, 2011 at 6:55 PM, Afkham Azeez <[email protected]> wrote:

> Guys,
> Can some folks check this out on different OSs and let us know whether this
> works? On my Mac, it has been working without any issues.
>
>
> On Fri, Mar 25, 2011 at 6:08 PM, Afkham Azeez <[email protected]> wrote:
>
>> So, another thing I observed is, when the MacPermSize becomes larger, the
>> number of GC runs on PermGen space increases,  and classes get unloaded more
>> frequently, thereby decreasing the possibility of running out of PermGen
>> space.
>>
>>
>> On Fri, Mar 25, 2011 at 6:03 PM, Afkham Azeez <[email protected]> wrote:
>>
>>> 256m may not be sufficient. Can you try with 512?
>>>
>>>
>>> On Fri, Mar 25, 2011 at 5:17 PM, Pradeep Fernando <[email protected]>wrote:
>>>
>>>> hi,
>>>>
>>>> after setting -XX:PermSize=128m -XX:MaxPermSize=256m. the class
>>>> unloading and GC on permgen space seems to be happening. However after
>>>> ~8 the server crashes.
>>>>
>>>> --Pradeep
>>>>
>>>
>>>
>>>
>>> --
>>> *Afkham Azeez*
>>> Senior Software Architect & Senior Manager; WSO2, Inc.; http://wso2.com
>>> ,
>>> *
>>> *
>>> *Member; Apache Software Foundation; 
>>> **http://www.apache.org/*<http://www.apache.org/>
>>> *
>>> email: **[email protected]* <[email protected]>* cell: +94 77 3320919
>>> blog: **http://blog.afkham.org* <http://blog.afkham.org>*
>>> twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez>
>>> *
>>> linked-in: **http://lk.linkedin.com/in/afkhamazeez*
>>> *
>>> *
>>> *Lean . Enterprise . Middleware*
>>>
>>>
>>
>>
>> --
>> *Afkham Azeez*
>> Senior Software Architect & Senior Manager; WSO2, Inc.; http://wso2.com,
>> *
>> *
>> *Member; Apache Software Foundation; 
>> **http://www.apache.org/*<http://www.apache.org/>
>> *
>> email: **[email protected]* <[email protected]>* cell: +94 77 3320919
>> blog: **http://blog.afkham.org* <http://blog.afkham.org>*
>> twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez>
>> *
>> linked-in: **http://lk.linkedin.com/in/afkhamazeez*
>> *
>> *
>> *Lean . Enterprise . Middleware*
>>
>>
>
>
> --
> *Afkham Azeez*
> Senior Software Architect & Senior Manager; WSO2, Inc.; http://wso2.com,
> *
> *
> *Member; Apache Software Foundation; 
> **http://www.apache.org/*<http://www.apache.org/>
> *
> email: **[email protected]* <[email protected]>* cell: +94 77 3320919
> blog: **http://blog.afkham.org* <http://blog.afkham.org>*
> twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez>
> *
> linked-in: **http://lk.linkedin.com/in/afkhamazeez*
> *
> *
> *Lean . Enterprise . Middleware*
>
>
> _______________________________________________
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> [email protected]
> http://mail.wso2.org/cgi-bin/mailman/listinfo/carbon-dev
>
>


-- 
Sameera Jayasoma
Technical Lead and Product Manager, WSO2 Carbon

WSO2, Inc. (http://wso2.com)
email: [email protected]
blog: http://tech.jayasoma.org

Lean . Enterprise . Middleware
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