How to Measure CPU Time and Wall Clock Time Across Different Platforms?

Measuring CPU Time and Wall Clock Time on Multiple Platforms

Determining the execution time of code is crucial for performance optimization. Identifying how much time a function allocates to CPU processing versus the total time elapsed from its initiation provides valuable insights for runtime analysis. To address this need, let's explore time measurement methods for both Linux and Windows platforms, including considerations for architecture dependency.

C and C Functions:

Here's a code snippet that provides a cross-platform solution:

For Windows systems, the corresponding functions would be:

Demonstration:

To illustrate the usage of these functions, here's an example:

This code calculates the wall clock time and CPU time consumed by the computationally intensive loop and prints the results for analysis.

Architecture Independence:

The presented time measurement methods are largely architecture-independent. They rely on system-provided functions that are designed to account for the specific hardware architecture. However, certain edge cases may require platform-specific optimizations or considerations.

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