How to know now process tomcat memory

gistfile1.txt

1.check

 1) Linux java -XX:+PrintFlagsFinal -version 2>&1 | grep -i -E 'heapsize|metaspacesize|permsize|version'

 2) Window java -XX:+PrintFlagsFinal -version 2>&1 | findstr /I "heapsize metaspacesize permsize version"
 
 3) sudo jmap -heap PID
 * PerGem Space - permsize, metaspacesize

2.add start option
 1) cd ${tomcat_home}/bin
 2) vi catalina.sh
 3) Java 7
    MAVEN_OPTS -XmxSIZEm -XX:MaxPermSize=SIZEm -XX:PermSize=SIZEm
    Java 8
    MAVEN_OPTS -XmsSIZEm -XmxSIZEm -XX:MaxMetaspaceSize=SIZEm -XX:MetaspaceSize=SIZEm