How calculate efficiency of operating system?

The efficiency of an operating system can be calculated by measuring various performance metrics, such as CPU utilization, memory usage, and response time. A common approach is to analyze throughput, which is the number of processes completed in a given time frame, and turnaround time, which measures the total time taken from submission to completion of a process. Additionally, resource utilization, including disk and network I/O, can be evaluated to gauge how effectively the OS manages hardware resources. Overall, a combination of these metrics provides a comprehensive view of the operating system's efficiency.