On Mar 12, 2013, at 8:45 PM, Matt Lamoureux <mml...@gmail.com> wrote:

> Thanks, Vincent - I will change my settings to align with your
> recommendations.  Any thoughts on how to confirm if the settings are being
> applied properly?

Lots of ways, use jconsole for example.

-Vincent

> On Tue, Mar 12, 2013 at 11:33 AM, Vincent Massol <vinc...@massol.net> wrote:
> 
>> 
>> On Mar 12, 2013, at 3:59 PM, Matt Lamoureux <mml...@gmail.com> wrote:
>> 
>>> Hi all,
>>>  I admit that I am a Tomcat rookie.  That being said, I have been
>>> struggling with out-of-memory/permgen issues for a while now with no
>>> progress.  I have looked at this:
>>> 
>>> http://www.xwiki.org/xwiki/bin/view/FAQ/HowToSolveAJavaHeapMemoryError
>>> 
>>> ...but I have not been successful in adjusting my settings.  I am running
>>> on Windows 2008 R2 64-bit with 12gb available RAM.  I am trying to
>> allocate
>>> at least 4gb to run Xwiki
>> 
>> BTW 4GB seems too much, see recommendations on
>> http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Installation#HPrerequisites
>> (I've just updated the page with more information)
>> 
>> Thanks
>> -Vincent
>> 
>>> , since nothing else is running on this server
>>> (other than MySQL).  I run Tomcat as a service, if that matters.   I have
>>> been using the Groovy function "${Runtime.getRuntime().maxMemory()}" to
>>> keep an eye on my heap size.  It stays at 259522560 bytes (247.5mb) no
>>> matter what I do.  I have tried setting a CATALINA_OPTS system variable
>>> with the following settings:
>>> 
>>> -Xms2096m -Xmx=4096m -XX:MaxPermSize=1024m -XX:+CMSClassUnloadingEnabled
>>> -XX:+CMSPermGenSweepingEnabled
>>> 
>>> I have also tried going into the Java tab on the Tomcat properties window
>>> and setting the values there:
>>> 
>>> -DXms2096m
>>> -DXmx4096m
>>> -DXX:MaxPermSize=1024m
>>> -DXX:+CMSClassUnloadingEnabled
>>> -DXX:+CMSPermGenSweepingEnabled
>>> 
>>> So what am I doing wrong?  Or is it my understanding that is off - is
>> that
>>> Groovy function not really telling me the allocated memory?   Any advice
>>> would be greatly appreciated.
>>> 
>>> Thanks!
>>>  - Matt L.
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