Process.PrivateMemorySize64返回已提交的内存，而不是私有的

Question

I'm writing a program in C# using .NET 4.5, that will allow me to monitor the memory, CPU and network usage of a particular process, and then chart that data according to my needs.

In order to obtain the memory usage for a particular process, I am checking the PrivateMemorySize64 property for that Process object. I am expecting to see the Private memory used by that process, but instead, it is showing the amount in Commit, as confirmed by the Windows Resource Monitor.

My questions are:

1) Does anybody know why this error is happening? 2) Is there a fix for it? 3) If no fix, is there another straightforward way I can obtain the private memory reserved for a process?

Here are the relevant parts of my code:

using System;

// I add all the open Processes to an array
Process[] localAll = Process.GetProcesses();

// I then add all the processes to a combobox to select from
// There's a button that updates labels with requested info

Process[] p = Process.GetProcessesByName(comboBox1.SelectedItem.ToString());
label1.Text = p[0].PrivateMemorySize64.ToString() + " bytes";

Answer 1

From your comment you said you are looking for private working set. It appears from this link How to calculate private working set (memory)? that it is indeed not a part of the Process class. You must instead use a performance counter.

Copied and pasted from the other answer just in case for some reason it gets deleted.

using System;
using System.Diagnostics;

class Program {
    static void Main(string[] args) {
        string prcName = Process.GetCurrentProcess().ProcessName;
        var counter = new PerformanceCounter("Process", "Working Set - Private", prcName);
        Console.WriteLine("{0}K", counter.RawValue / 1024);
        Console.ReadLine();
    }
}