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Can I Set The Number Of Threads From An External FIle in Apache Jmeter?

I have many JMeter scripts that are testing different scenarios and I want to create a configuration file for some common values across my scripts, so I will not have to edit each one to change let's say the Number of Threads.

I tried the following method but without success: I created a CSV file to contain the number of threads and passed this variable inside the Thread Group.

There is no error, but the script is not starting, always showing: "Starting 0 threads for group Thread Group."

Is there a way to set the Number of Threads from an external file?

Solution

  • It is, you need to create a .properties file like settings.properties and define the values there for example:

    number.of.threads=100
number.of.loops=10
etc.

    And refer the properties in the Thread Group via __P() function:

    - ${__P(number.of.threads,)}
- ${__P(number.of.loops,)}
- etc.

    enter image description here

    Once done you can pass the file to JMeter using -q command line argument:

    jmeter -q settings.properties -n -t test.jmx -l result.jtl

    You can also override the values from the command-line using -J command-line argument like:

    jmeter -Jnumber.of.threads=10 -n -t test.jmx -l result.jtl

    More information: Apache JMeter Properties Customization Guide