Java - GC

JAVA_OPTS="-server"
JAVA_OPTS="${JAVA_OPTS} -Xms1024m -Xmx1024m -Xmn768m -XX:SurvivorRatio=2 -XX:PermSize=64m -XX:MaxPermSize=256m"
JAVA_OPTS="${JAVA_OPTS} -XX:+PrintGCDetails -Xloggc:/usr/local/tomcat/logs/gc.log"

Reference URL
http://fly32.net/438

http://www.javaservice.com/~java/bbs/read.cgi?m=&b=weblogic&c=r_p&n=1221718848&p=6&s=t