Apache JMeter is one of the best open source tools for Load and Performance testing. It can be widely used for a variety of applications. It is designed to load test functional behavior and measure performance.
JMeter is a Java desktop application with a graphical interface that uses the Swing graphical API. It can, therefore, run on any environment/workstation that accepts a Java virtual machine, for example, − Windows, Linux, Mac, etc.
Apache JMeter may be used to test performance both on static and dynamic resources, Web dynamic applications. It can be used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types.
There are three modes to start JMeter
GUI Mode: It can be used for recording test script and running their script to JMeter itself. Run the Jmeter.bat file for Windows system and JMeter file for Linux. These files are found in the bin folder. After that, the JMeter GUI will appear.
Command Line Mode (Non-GUI): For load testing, use this mode to get optimal results.
Server Mode: For distributed testing, use this mode to run JMeter in Sever on the remote node and control the servers from GUI.
JMeter simulates a group of users sending requests to a target server and return statistics information of target server through graphical diagrams.
Let’s have a look at the different steps performed by JMeter during testing:
The workflow of JMeter as shown in the figure below,
i) Summary Report
ii) Graphical report
iii) Tabular report
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