I have tomcat and MYSQL running in same machine. My OS is Linux Ubuntu. I try to see how big memory consumption by MYSQL and JVM(tomcat). My stratergy is to use: free -m to check how big memory is used by both of them. Then I try to check tomcat JVM's conumption. After that, I also could know the memory consumption of database. But I do not know how to check JVM memory consumption. Could someone tell me some solution or are there better way?