JVM_value

Production Heap Size with G1GC
standalone.conf / domain.conf
JAVA_OPTS="$JAVA_OPTS -Xms512m -Xmx1024m"
JAVA_OPTS="$JAVA_OPTS -XX:MaxMetaspaceSize=256m"
JAVA_OPTS="$JAVA_OPTS -XX:+UseG1GC"
JAVA_OPTS="$JAVA_OPTS -XX:MaxGCPauseMillis=200"
JAVA_OPTS="$JAVA_OPTS -XX:G1HeapRegionSize=4M"
JAVA_OPTS="$JAVA_OPTS -Xss1m"
JAVA_OPTS="$JAVA_OPTS -XX:SurvivorRatio=6"
JAVA_OPTS="$JAVA_OPTS -XX:NewRatio=2" 
JAVA_OPTS="$JAVA_OPTS -Xlog:gc*=info:file=/opt/jboss/standalone/log/g1gc.log::filecount=10,filesize=10M"



In case if you want to use zgc (which is an expremental feature in Java11)

standalone.conf / domain.conf
JAVA_OPTS="$JAVA_OPTS -Xms512m -Xmx1024m"
JAVA_OPTS="$JAVA_OPTS -XX:MaxMetaspaceSize=256m"
JAVA_OPTS="$JAVA_OPTS -Xss1m"
JAVA_OPTS="$JAVA_OPTS -XX:SurvivorRatio=6"
JAVA_OPTS="$JAVA_OPTS -XX:NewRatio=2" 
JAVA_OPTS="$JAVA_OPTS -XX:+UnlockExperimentalVMOptions"
JAVA_OPTS="$JAVA_OPTS -XX:+UseZGC"
JAVA_OPTS="$JAVA_OPTS -Xlog:gc*=info:file=/opt/jboss/standalone/log/zgc.log::filecount=10,filesize=10M"