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Testing / Apache JMeter Interview questions

What is Non-GUI mode in JMeter?

Non-GUI mode runs a JMeter test entirely from the command line, without launching the graphical interface, which uses substantially less memory and CPU overhead than running the same test through the GUI.

It's invoked with a command like jmeter -n -t testplan.jmx -l results.jtl, where -n selects non-GUI mode, -t points to the test plan file, and -l specifies where to save the results.

This is the officially recommended way to actually generate load for real test runs; the GUI is meant for building and debugging a test plan, not for running the load test itself at scale.

Non-GUI mode is invoked with the command-line flag:
Non-GUI mode is the recommended way to:

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