What is the calculation for server consumption in a network request?

The calculation for server consumption in a network request involves measuring the duration from when a request begins until the first byte of the response is received. This duration reflects the time taken by the server to process the incoming request and start sending the response back to the client.

The correct formula is responseStart - requestStart. This calculation effectively captures the time interval where the server is actively handling the request and getting ready to respond. By subtracting the moment the request started from the moment the response begins, you determine the server processing time for that particular request.

In contrast, the other options incorrectly calculate different time intervals that do not specifically measure the server's active processing duration. For instance, some formulas might include additional start and end times that involve action beginnings or unrelated timing metrics that do not reflect only the server's processing time. Understanding the specific focus on the request and response timing is key to accurately assessing server consumption.