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Performance Testing
What Is Performance Testing?
Performance testing is one of the most critical phases of any product launch to verify and validate the product performance. It refers to testing a program or software under some specific workload and monitoring how it responds. It checks if the application performs as expected under that load, or if it does something unexpected.
It performs performance testing to test the speed, reliability, response time, and resource usage. The goal behind performance testing is to identify and eliminate any potential resistances to the software application.
Performance testing mainly focuses on three factors of a Software Program:
Speed
If the response of the application is fast or not
Scalability
The maximum user load is determined
Stability
The application is checked under varying loads
Why Performance Testing?
Performance testing is used to identify and eliminate the performance bottlenecks in the software application. The testing eliminates performance glitches instead of finding bugs.
Performance testing enables stakeholders to have an idea about the application's stability, scalability, and speed. The testing brings forward the issues that need fixing before the application reaches the market.
Types of performance Testing
Load Testing
Load testing is a type in which it tests an application for its performance at normal and peak usage.
The performance is checked as per the response time and consistency on different user loads.
Volume Testing
Volume testing is a type where the system's performance is checked concerning the volume of data.
To perform the test, it enters a vast amount of data into the database.
Stress Testing
Stress testing is a type in which different ways to break the system are found, i.e., how much load a system can sustain.
It checks how much load a system can hold in an incremental approach.
Capacity Testing
Capacity testing is a type in which it checks an application for its capability to meet business volumes.
The testing is performed, keeping in mind the prospects of an application and the number of users.
Reliability Testing
Reliability testing is when the application is verified if the application would become normal again after an abnormal state.
It estimates the time that the system would take to return to its normal state.
Scalability Testing
Scalability testing is a type where the application is determined if it could scale up whenever needed.
The need for scaling up comes when there is an increase in user load.
Performance Testing Process
The process of performance testing is divided into the following eight parts:
Requirement Gathering
The requirements are identified and gathered from the clients.
The information on the application’s infrastructure, functionality, and usage is gathered
Selection of Tools
After the analysis is complete, it performs proof of concept with the available tools.
The available tools list depends on the tool cost and the technology used.
Performance Test Plan
After the above steps, test planning and designing are done.
It is the test plan that decides how the performance test will take place.
Performance Test Development
Here, the use cases for the identified functionalities are created.
Once the clients approve the use case, the script development begins.
These scripts are then validated, and parallelly the test environment is set up.
Performance Test Modeling
Here the performance load model is created for test execution.
It is checked if they achieve the performance metrics provided by the clients.
Execution of Test
It does the text execution in incremental order.
Initially, tests are not executed with maximum users that are in the Load model.
Test Results Analysis
Results are the most important deliverable for performance testing.
Here, the ROI and productivity that performance testing may provide are shown.
Report
At the end of all the steps, it is necessary to have a simplified conclusion.
A brief, descriptive, and to-the-point test report is made.
Tools for Performance Testing
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