Performance testing is the process of testing the software application for the non-functional aspects like response time, speed, reliability, and scalability under different workloads. The main purpose of performance testing is to identify the performance bottlenecks of software applications and eliminate them for better usage. The performance testing is to test the speed, scalability, and stability. The major objective of performance testing is to provide the information to the stakeholders about the application's reliability, scalability, response time, throughput time, and other non-functional aspects.

If the performance testing is not performed then there will always be a possibility of having issues such as slow response time, weak throughput, weak connection time, etc. Performance testing is important for software applications with long duration of usage and with large deviations in workloads.

https://erpsolutions.oodles.io/developer-blogs/An-Introduction-To-P...