How to measure CPU usage and memory for a process using .NET Core 3.1 for Windows, Linux and macOS?

To measure CPU usage and memory for a process using .NET Core 3.1 on Windows, Linux, and macOS, you can utilize platform-specific APIs and libraries. Here are the approaches for each platform:

Windows:

• For CPU usage, you can use the Process.TotalProcessorTime property to retrieve the total CPU time used by the process.
• For memory usage, you can use the Process.WorkingSet64 property to obtain the working set size of the process (the amount of physical memory used).

Linux:

• For CPU usage, you can read the /proc/[process_id]/stat file and extract the necessary CPU-related information. The utime and stime fields provide the user and system CPU time, respectively.
• For memory usage, you can read the /proc/[process_id]/status file and retrieve the VmRSS field, which represents the resident set size (RSS) or the amount of physical memory used.

macOS:

• For CPU usage, you can use the Process.TotalProcessorTime property similarly to Windows.
• For memory usage, you can use the Process.WorkingSet64 property similarly to Windows.

Here's an example code snippet that demonstrates how to measure CPU usage and memory for a process using .NET Core 3.1:

csharpCopy code
using System;

using System.Diagnostics;

using System.Threading;



class Program

{

    static void Main(string[] args)

    {

        int processId = Process.GetCurrentProcess().Id;

        Process process = Process.GetCurrentProcess();

        TimeSpan lastTotalProcessorTime = process.TotalProcessorTime;

        long lastWorkingSet = process.WorkingSet64;



        // Measure CPU usage and memory periodically

        while (true)

        {

            // Calculate CPU usage

            TimeSpan currentTotalProcessorTime = process.TotalProcessorTime;

            double cpuUsage = (currentTotalProcessorTime - lastTotalProcessorTime).TotalMilliseconds /

                (Environment.ProcessorCount * Environment.TickCount);



            // Calculate memory usage

            long currentWorkingSet = process.WorkingSet64;

            long memoryUsage = currentWorkingSet - lastWorkingSet;



            Console.WriteLine($"CPU Usage: {cpuUsage:F2}%");

            Console.WriteLine($"Memory Usage: {memoryUsage / 1024} KB");



            lastTotalProcessorTime = currentTotalProcessorTime;

            lastWorkingSet = currentWorkingSet;



            // Wait for some time before measuring again

            Thread.Sleep(1000);

        }

    }

}

Keep in mind that the code provided is a simplified example and may need further refinement or adaptation to suit your specific requirements or target platform. Additionally, platform-specific APIs and file system access may have different behaviors or require additional permissions, so make sure to handle any exceptions and implement appropriate error handling in your code.