Specify number of threads/users on command line for jmeter [duplicate]

Question

Is there a way to specify # of threads on the command line when running Jmeter load tests from the command line/non-GUI mode? I looked at the Jmeter manual and there didn't appear to be an option to specify on the command line. There was mention of a property file but again, I don't know how to specify that in the property file to be used by Jmeter.

What I need to do is in non-GUI mode, specify the number of threads I want to run for that test on the command line.

The two hokey work arounds I am thinking of doing are:

1. Use sed to edit the jmx file in my script with the number of users I want to test with
2. Have X number of jmx files, each with a hard coded number of users to test with, and then pass that to Jmeter to test.

Thanks in advance for your help.

Answer 1

1. You can define number of threads usin __P() function like ${__P(threads,)}

2. The aforementioned threads property can be overridden from the command line using -J argument like:

   jmeter -Jthreads=1000 -n -t test.jmx -l result.jtl
   

Storing property in file is also possible, just add the next line to user.properties file (located in "bin" folder of your JMeter installation)

threads=1000

and next time you start JMeter it will pick the property up and apply it.

More information:

• Full List of Command-Line Options
• Apache JMeter Properties Customization Guide
• Overriding Properties Via Command-Line