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    Automation

    JMeter Performance Testing Questions

    What is JMeter?

    Apache JMeter is an open-source free software designed to load test behavior and measure the performance of the application. Also, it was designed for testing Web Applications but has since expanded its use-cases. Furthermore, it is a java application designed to test how much load your website can handle.

    What are the advantages of JMeter?

    JMeter is Open Source and Free.
    Distributed Testing is possible.
    SOAP / REST API performance testing.
    Different modes of operation headless, GUI
    We can do performance testing for Web applications, Servlets, Database,FTP Servers etc.
    Open API and extensible and customization.

     

    JMeter_Distributed_Testing

     

    What is a Thread group?

    Thread group elements are used to specify the number of running threads and a ramp-up period. Also, each thread simulates a user interaction and the ramp-up period specifies the time to create all the threads. Example: If you specify 5 threads and 10 seconds of ramp up time, means that it will take 2 seconds between each thread creation. The loop count defines the running time for a thread.

    What is Ramp-Up time?

    Ramp-Up Period indicates the time taken by JMeter to create all of the threads needed. Also, if you set 100 seconds as the ramp-up period for 5 threads then the it will take 100 seconds to create those 5 threads. Furthermore, by setting its value to zero all the threads can be created at once.

    What is a Listener?

    Listeners are used to process request data. For example, we can save data to a file or illustrate the results with a chart. Furthermore, it is open source and is extensible and it is always possible to add an extra visualization or data processing module. For example, the Graph Results listener generates a simple graph that plots all sample times.

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