Re: OutOfMemoryError running in Tomcat

Hi

I set some additional jvm options:

JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC "
JAVA_OPTS="$JAVA_OPTS -XX:+CMSPermGenSweepingEnabled "
JAVA_OPTS="$JAVA_OPTS -XX:+CMSClassUnloadingEnabled "

regards
Stefan



----- Originalnachricht -----
Von: Juan Manuel Sánchez Martagón <peruxho@...>
Gesendet: Die, 7.7.2009 09:37
An: Andrea Aime <aaime@...>
Cc: geoserver-users@...
Betreff: Re: [Geoserver-users] OutOfMemoryError running in Tomcat

Hello, I've tried changing this paramters but it goes on crashing :(

One more question. JAI libs could be realated to the problem? I've been thinking that JAI only are used to render coverages but I'm not sure now.


Thanks.

El 6 de julio de 2009 15:10, Andrea Aime <aaime@...> escribió:

Juan Manuel Sánchez Martagón ha scritto:


Hello, I'm running Geoserver in a Tomcat 5.5.27 instance deployed in a Red Hat Server with 2Gb of memory and JDK 1.5.



Surprisingly, geoserver crashes after a few request, specially when the requested envelope is small (near 100m X 100m).



The exception is: Exception in thread "http-8080-Processor25" java.lang.OutOfMemoryError: requested 16 bytes for CHeapObj-new. Out of swap space?



and the catalina.sh script for run tomcat has the next options (as I read on: http://geoserver.org/display/GEOSDOC/2.6+GeoServer+in+Production+Environment)




JAVA_OPTS="-Djava.awt.headless=true -server -Xms1000M -Xmx1000M -XX:SoftRefLRUPolicyMSPerMB=36000 -XX:PermSize=500M -XX:MaxPermSize=500M -XX:+UseParallelGC"



Any advice please? Thank you very much.




There has been a similar thread some time ago:

http://www.nabble.com/Apache-Tomcat-crashing...-td18988481.html



but in the end I don't think it provided much of a solution, it

seems to be related to system level issues.



What you can try is to:

- upgrade the java virtual machine to 1.6.0_14

- reduce the -Xmx and -Xmx to lower values (512M) and definitely

  reduce the perm size, seems quite a bit too wide



Cheers

Andrea



--

Andrea Aime

OpenGeo - http://opengeo.org

Expert service straight from the developers.



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