Why is it necessary to run a process immediately before taking a performance reading?

Running a process immediately before taking a performance reading is essential to allow the rules to assemble properly. In Pega applications, when processes are executed, the system compiles and assembles the applicable rules, which can affect the performance of the application. If this step is not accounted for, the performance reading may reflect outdated or unoptimized rule resolutions.

By running the process first, you ensure that the system has loaded and optimized the relevant rules, thus providing a more accurate representation of the application's performance under expected operational conditions. This ensures that your performance metrics are relevant and reflective of the current state of the application, capturing the impact of the rules as they are actually executed during normal operation.