Running the Test Plan
To run the test plan you can go to Run menu -> Run or press ctrl + r. To indicate that the test is running a green square lits up in the upper-right-hand corner. After selecting "stop" as well the green light remains on unless and until all test threads exit. Furthermore the total number of currently active threads is indicated by the numbers to the left of the green square. The green square will change to grey Once JMeter finishes running your Test Plan. You can also stop the test plan in between by selecting Shutdown or Stop from the Run menu.
A file which you want to save the results for in your
listener could be opened in any visualizer. The results will be
displayed according to the visualizer itself. However you can open the same file
in more than one visualizer because during the test run the JMeter will ensure
that no sample is recorded more than once to the same file.
The properties of JMeter can be modified by implementing changes in the jmeter.properties in the /bin directory or you can also develop a copy of jmeter.properties on your own by specifying it in the command line.
Some more JMeter properties can be defined in
the file as defined by the JMeter property user.properties having the
default value user.properties. If the file is in the current directory then it
will automatically get loaded. In the same way you can update the system
properties from system.properties.