using System;
 using System.Diagnostics;
 using System.Threading; public class CpuLoadInfo 
 { // auxiliary print methods 
  private static void Say ( string txt ) 
  {
   Console.WriteLine(txt);
  } // auxiliary print methods 
  private static void Say() 
  {
   Say("");
  } // The main method. Command line arguments are ignored.
  [STAThread]
  public static void Main() 
  {
   Say("$Id: CpuLoadInfo.cs,v 1.2 2002/08/17 17:45:48 rz65 Exp $");
   Say();  Say("Attempt to create a PerformanceCounter instance:");
   Say("Category name = " + CategoryName);
   Say("Counter name  = " + CounterName);
   Say("Instance name = " + InstanceName);
   PerformanceCounter pc
    = new PerformanceCounter(CategoryName,CounterName,InstanceName);
   Say("Performance counter was created.");
   Say("Property CounterType: " + pc.CounterType);
   Say();  Say("Property CounterHelp: " + pc.CounterHelp);
   Say();
   Say("Entering measurement loop.");  while (true) 
   {
    Thread.Sleep(1000); // wait for 1 second
    float cpuLoad = pc.Nextvalue();
    Say("CPU load = " + cpuLoad + " %.");
   }
  }     // constants used to select the performance counter.
  private const string CategoryName = "Processor";
  private const string CounterName  = "% Processor Time";
  private const string InstanceName = "_Total";
 }这是在我计算机上的计算结果：
 Entering measurement loop.
 CPU load = 0 %.
 CPU load = 1.941746 %.
 CPU load = 4.854369 %.
 CPU load = 10 %.
 CPU load = 0 %.
 CPU load = 2.999997 %.
 CPU load = 0.9900987 %.
 CPU load = 0 %.