Use the jvisualvm tool ----- tocmat to start JMX monitoring

VisualVM It's a free one , Integrated multiple JDK Visualization tools for command line tools , It can provide you with powerful analysis ability , Yes Java Application performance analysis and tuning . These functions include generating and analyzing massive data 、 Tracking memory leaks 、 Monitor the garbage collector 、 Execution memory and CPU analysis , At the same time, it also supports MBeans Browse and operate on .

here   Just connect to the remote tomcat.

One 、 modify tomcat The configuration file

modify tomcat/bin/shutdown.sh

CATALINA_OPTS="$CATALINA_OPTS 
-Dcom.sun.management.jmxremote
-Djava.rmi.server.hostname=49.235.135.238
-Dcom.sun.management.jmxremote.port=1888
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false"

    ip You want to monitor tomcat Of the host server ip Address  
    Port number , Is the monitoring port number you want to open . 
    sll,false No use ssl link  
    authenticate,false Indicates that monitoring is not used , That is, user name and password are not required

        ··· yes , we have tomcat The version has to be written in one line

        ··· This configuration does not require an account password , I didn't try to configure the account password

:wq Save the file , Then start tomcat

see 1888 Whether the port is enabled ：netstat -lnp|grep java

Two 、 Connect jvisualvm.exe Of jmx

route jdk1.8\bin\jvisualvm.exe

 

Here we are , Local tools are connected to remote tomcat, Monitor according to your own needs .

3、 ... and 、 For specific performance analysis, please refer to ：

https://www.ibm.com/developerworks/cn/java/j-lo-visualvm/

https://www.cnblogs.com/wade-xu/p/4369094.html