To perform spike testing in JMeter, first set up your basic test plan with the necessary HTTP requests. Then, use the Synchronizing Timer to control and synchronize multiple threads, allowing them to hit the server at the exact same moment. Configure the number of threads to simulate the sudden increase in load (spike). Execute the test to observe how the system handles sudden surges in traffic and analyze the results to assess performance stability during peak loads. This method is particularly useful for e-learning software performance testing, where traffic can spike during key events like online exams or course launches.”