Monitoring JVM metrics via JMX managemnet interface in JMeter

What do we need:

Once you have plugins installed them in the jmeter’s/lib/ext folder, then:
1 – On the box you want to monitor, copy templates: jmxremote.password & jmxremote.access from $JAVA_HOME/lib/management to for example: /srv/play/
2 – edit them according to your liking
3 – launch your JAVA application with additional parameters:

java -jar your_application.jar -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.port=10006 -Dcom.sun.management.jmxremote.password.file=/srv/play/jmxremote.password -Dcom.sun.management.jmxremote.access.file=/srv/play/jmxremote.access

4 – start a server-agent (http://jmeter-plugins.org/wiki/PerfMonAgent/) on the host which JVM metrics you want to monitor using command like:

cd ${jmeter_folder}/lib/ext/
java -jar ./CMDRunner.jar --tool PerfMonAgent --udp-port 0 --tcp-port 7777

You can also run it as background process and detach from your session, so it will continue to work even if you disconnect from the server.

cd ${jmeter_folder}/lib/ext/
nohup java -jar ./CMDRunner.jar --tool PerfMonAgent --udp-port 0 --tcp-port 7777 &

5 – add “PerfMon Metrics Collector” to your test plan
6 – provide the hostname/IP address of the box running server-agent in the “Host/IP” field (don’t forget about the port 🙂 )
7 – select JMX as the “Metric to collect”
8 – double click on “Metric parameter” field and then click on the “…” button to the right
9 – enter all the credentials that the server-agent will use to connect to the local JVM via JMX port. Here’s an example config:

url=localhost\:10006:user=role:password=password:gc-time

where role & password are of course defined in the jmxremote.password & jmxremote.access files

btw. Here’s an example test plan with preconfigured PerfMon listener.

If everything was configured properly the you should see something like that on the PerfMon graph:

example PerfMon graph with JVM Metrics

example PerfMon graph with JVM Metrics

How to save the log file in the same folder as jmx file

Hi All,

I’ve been struggling today to save Aggregate Graph’s log file in the same directory as the project file.
Finally after 2h of crawling thru google I’ve sorted that out by myself.

All you need to do is to use such a simple and obvious thing like tilde “~” and put it before your desired log file name 🙂

~/jmeter-results-${__time(YMDHMS)}.csv

this is how you can save your log file in jmx's home directory

this is how you can save your log file in jmx’s home directory

Hope you’ll find it helpful.

J