Load Test Using JMeter

What is JMeter?

JMeter is an software that can be used to execute performance testing, load testing and functional testing of your web applications. JMeter can also simulate a heavy load on a server by creating tons of virtual concurrent users to web server.

Please find more details here


In this test I will show you how we can run a simple API load test using Jmeter:

API on which load test will be run:

http://samples.openweathermap.org/data/2.5/weather?q=London,uk&appid=b6907d289e10d714a6e88b30761fae22

You can find details info here:

https://www.openweathermap.org/current

1. Open Apache Jmeter

2. Add a new thread group

Configure thread group using following settings:

Number of Thread (user) L:10

Ramp-Up Period: 5

Loop Count = Foreever

Scheduler = true

Duration : 30 second

3. add a new sampler

Configure HTTP Request using following settings:

Server: samples.openweathermap.org

Path : /data/2.5/weather?q=London,uk&appid=b6907d289e10d714a6e88b30761fae22

4. Add a New Config element 

You can add different heads information using HTTP header manager. (not required for this load test)

5. Add a new Listener 

6. Execute the test and see the result 

Details about different configuration option :

Number of Threads: Number of users to simulate

Ramp-up Period: To initialize the users on to server

Loop Count: Denotes the number of times the user to perform a particular test

Delay Thread creation until needed: Waits until the completion of the time mentioned to create threads

Scheduler :To enable or disable the scheduler

Start Time: Available only after enable of scheduler, used to mention at what point of time the execution need to be started

End Time :Available only after enable of scheduler, used to mention at what point of time the execution need to be stopped

Duration :Available only after enable of scheduler, used to mention how long the execution is to be happened.
Note: If duration time is mentioned, then the end time will be ignored

Startup delay :Available only after enable of scheduler, used to choose the startup delay

https://www.quora.com/What-is-the-meaning-of-ramp-up-period-and-loop-count-in-JMeter