This discussion can be of interest to DHIS2 administrators as well. ---------- Forwarded message ---------- From: James Arbaugh <jarba...@hashaiti.org> Date: Sun, Apr 14, 2013 at 10:25 PM Subject: RE: Improving Tomcat memory parameters To: implement...@openmrs.org
Hi Ellen,**** ** ** We ran into those painful problems in the past too. One thing we did was added a crontab job to restart tomcat automatically during the night twice a week as “preventative” maintenance.**** ** ** FYI: our production server (with 46GB physical memory) runs stable with the following tomcat configuration…**** CATALINA_OPTS="-Xms10240m -XX:PermSize=6144m -XX:MaxPermSize=6144m -XX:NewSize=4096m"**** ** ** Thanks,**** James**** ** ** *From:* implement...@openmrs.org [mailto:implement...@openmrs.org] *On Behalf Of *Ellen Ball *Sent:* Thursday, April 11, 2013 5:33 PM *To:* implement...@openmrs.org *Subject:* Improving Tomcat memory parameters *Importance:* Low**** ** ** We've experienced the pain of tomcat crashing on an OpenMRS 1.9.3 production server with this memory error: "Java.lang.OutOfMemoryError: PermGen"**** - The server has 32GB of RAM. **** - tomcat is using JAVA_OPTS = "-Xmx512m -Xms512m -XX:PermSize=256m -XX:MaxPermSize=256m -XX:NewSize=128m"**** Has anyone else seen this error? Has anyone experimented with increased memory parameter values? It seems that the Xmx and Xms values should be the same for a server ("In a server environment, you normally want Xms and Xmx set to the same value to avoid heap thrashing."). The heap space shouldn't be too high, but if anyone know the optimal size that would be helpful.**** ** ** Thanks,**** ** ** Ellen Ball**** Partners In Health**** ** ** **** -- OpenMRS Implementers: http://go.openmrs.org/implementers Post: implement...@openmrs.org Unsubscribe: implementers+unsubscr...@openmrs.org Manage your OpenMRS subscriptions at https://id.openmrs.org/ **** -- OpenMRS Implementers: http://go.openmrs.org/implementers Post: implement...@openmrs.org Unsubscribe: implementers+unsubscr...@openmrs.org Manage your OpenMRS subscriptions at https://id.openmrs.org/ -- Knut Staring Dept. of Informatics, University of Oslo +4791880522 http://dhis2.org
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