i would request you to set the values as below. -Xms128m –Xmx2048m -XX:MaxPermSize=512m .
These are the sufficient to run a Tomcat with the BO webapps installed.
Modification needs to be done based on the traffic on the Tomcat.
Going down the line you can fine tune these parameters. Frequently check the tomcat logs for Java OutOfMemory exceptions ( Increase XMX Value) ,java.lang.OutOfMemoryError ( increase XX:Maxpermsize)
Make sure you are also applying Garbage Collector in Java Options
JAVA_OPTS=“-XX:+UseGC1“