What is the primary goal of performance testing?

The primary goal of performance testing is to determine system parameters like responsiveness and stability under load. This type of testing evaluates how an application behaves under various conditions, specifically during high traffic or heavy resource usage scenarios.

By assessing these parameters, developers and testers can identify bottlenecks, understand the limitations of the system, and ensure that the application can handle expected user loads efficiently. Performance testing helps ascertain factors such as response time, throughput, resource utilization, and overall stability, providing crucial insights that inform optimization efforts and improve user experience.

In contrast, enhancing visual aesthetics, checking error logs, and evaluating the user interface focus on different aspects of application quality and development. While these are important for creating a successful application, they do not directly address the performance metrics crucial for user satisfaction and application reliability under varying workloads. Thus, the correct option aligns perfectly with the core intent of performance testing.