Jeff,

You've set the maximum memory for the heap, but have you also done any
other optimization on the running JVM?

Anything with regards to the garbage collector or the PermGen?



-- 
Juan Marín Otero
GIS Consultant

-------Visita mi blog en---------------------
http://guachintoneando.blogspot.com
---------------------------------------------------



On Wed, Dec 21, 2011 at 7:01 PM, Jeff Dege <jeff.d...@korterra.com> wrote:

> We’re running GeoServer 2.1.0 on TomCat6 on an Ubunto 10.04 box, with a
> fairly modest load (just a few dozen users), and we’re having repeated
> problems with Java out-of-memory errors.****
>
> ** **
>
> This seems to be when it started:****
>
> ** **
>
> Dec 21, 2011 12:07:23 PM org.apache.catalina.connector.CoyoteAdapter
> service****
>
> SEVERE: An exception or error occurred in the container during the request
> processing****
>
> java.lang.OutOfMemoryError: GC overhead limit exceeded****
>
> Dec 21, 2011 12:08:51 PM org.apache.coyote.http11.Http11AprProcessor
> endRequest****
>
> SEVERE: Error finishing response****
>
> java.lang.OutOfMemoryError: GC overhead limit exceeded****
>
> ** **
>
> And since then, we’ve had repeated:****
>
> ** **
>
> Dec 21, 2011 4:34:02 PM org.apache.catalina.core.StandardWrapperValve
> invoke****
>
> SEVERE: Servlet.service() for servlet dispatcher threw exception****
>
> java.lang.OutOfMemoryError: Java heap space****
>
> ** **
>
> We’re using Sun’s JVM:****
>
> ** **
>
> java version "1.6.0_26"****
>
> Java(TM) SE Runtime Environment (build 1.6.0_26-b03)****
>
> Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)****
>
> ** **
>
> And I’m at a loss as to what is going on.  ****
>
> ** **
>
> We’re on a machine with 8G of ram, and I’ve set  -Xmx to 1G, and I simply
> can’t see how we could be hitting memory limits at the kind of load we’ve
> been seeing.****
>
> ** **
>
> Any ideas?****
>
>
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