// (c) 2007 Richard Grimes
// www.grimes.demon.co.uk

using System;
using System.Diagnostics; 

class App
{
   static void Main()
   {
      PerformanceCounterCategory[] cats = PerformanceCounterCategory.GetCategories();
      foreach (PerformanceCounterCategory cat in cats)
      {
         Console.WriteLine(cat.CategoryName);
         string[] instances = cat.GetInstanceNames();
         if (instances.Length > 0)
         {
            foreach (string instance in instances)
            {
               Console.WriteLine("\t" + instance);
            }
            PerformanceCounter[] counters = cat.GetCounters(instances[0]);
            foreach (PerformanceCounter counter in counters)
            {
               Console.WriteLine("\t\t" + counter.CounterName);
               counter.Close();
            }
         }
         else
         {
            PerformanceCounter[] counters = cat.GetCounters();
            foreach (PerformanceCounter counter in counters)
            {
               Console.WriteLine("\t" + counter.CounterName);
               counter.Close();
            }
         }
      }
   }
}