![]() ![]() May be program was waiting for some resources to become available.Īt the beginning of each solution, I listed explicitly which kind of time each method measures. ![]() Still, the computer’s processor spent only 0.2 seconds performing calculations for the program. It means the program was active for 2 minutes and four seconds. The difference between the Wall time and CPU time can occur from architecture and run-time dependency, e.g., programmed delays or waiting for system resources to become available.įor example, a program reports that it has used “CPU time 0m0.2s, Wall time 2m4s”. It does not include the waiting time for resources. The time spent waiting for other task to complete (like I/O operations) is not included in the CPU time. CPU Time, on the other hand, refers to the time the CPU was busy processing the program’s instructions.It also includes waiting time for resources. It is the difference between the time at which a program finished its execution and the time at which the program started. It’s the time you can measure with a stopwatch. Wall time (also known as clock time or wall-clock time) is simply the total time elapsed during the measurement.So it is essential to define and differentiate these two terms. We often come across two terms to measure the execution time: Wall clock time and CPU time. DateTime Module to determine the script’s execution time. ![]()
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