What are the primary Measures of Performance Testing?

The primary measures of performance testing focus on how well a system performs under various conditions and loads. In this context, speed, scalability, stability, and reliability are key factors that determine the overall performance of a web application or system.

Speed refers to the response time of the application when it is subjected to varying loads, reflecting how quickly users can interact with the system. Scalability indicates the application's ability to handle increased loads, such as more users or transactions, without performance degradation. Stability measures how consistently the system performs under steady-state conditions and during peak usage times, while reliability assesses the system's ability to function correctly over time without failures or crashes.

Other options, while important in their own right, focus on different aspects of software performance and user experience. For example, functionality and usability are vital for ensuring that the application meets user needs effectively, but they do not specifically address performance metrics. Security, accessibility, and compliance touch on other critical areas but are not directly related to the performance testing measures that are typically prioritized in the context of evaluating speed, scalability, stability, and reliability.