diff -r ff3e6edc7113 -r 0e01b63e1fdc Hardware/CPU/CPULoad.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Hardware/CPU/CPULoad.cs	Thu Feb 04 21:19:27 2010 +0000
@@ -0,0 +1,161 @@
+/*
+  
+  Version: MPL 1.1/GPL 2.0/LGPL 2.1
+
+  The contents of this file are subject to the Mozilla Public License Version
+  1.1 (the "License"); you may not use this file except in compliance with
+  the License. You may obtain a copy of the License at
+ 
+  http://www.mozilla.org/MPL/
+
+  Software distributed under the License is distributed on an "AS IS" basis,
+  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+  for the specific language governing rights and limitations under the License.
+
+  The Original Code is the Open Hardware Monitor code.
+
+  The Initial Developer of the Original Code is 
+  Michael Möller <m.moeller@gmx.ch>.
+  Portions created by the Initial Developer are Copyright (C) 2009-2010
+  the Initial Developer. All Rights Reserved.
+
+  Contributor(s):
+
+  Alternatively, the contents of this file may be used under the terms of
+  either the GNU General Public License Version 2 or later (the "GPL"), or
+  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+  in which case the provisions of the GPL or the LGPL are applicable instead
+  of those above. If you wish to allow use of your version of this file only
+  under the terms of either the GPL or the LGPL, and not to allow others to
+  use your version of this file under the terms of the MPL, indicate your
+  decision by deleting the provisions above and replace them with the notice
+  and other provisions required by the GPL or the LGPL. If you do not delete
+  the provisions above, a recipient may use your version of this file under
+  the terms of any one of the MPL, the GPL or the LGPL.
+ 
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace OpenHardwareMonitor.Hardware.CPU {
+  public class CPULoad {
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct SystemProcessorPerformanceInformation {
+      public long IdleTime;
+      public long KernelTime;
+      public long UserTime;
+      public long Reserved0;
+      public long Reserved1;
+      public ulong Reserved2;
+    }
+
+    private enum SystemInformationClass : int {
+      SystemBasicInformation = 0,
+      SystemCpuInformation = 1,
+      SystemPerformanceInformation = 2,
+      SystemTimeOfDayInformation = 3,
+      SystemProcessInformation = 5,
+      SystemProcessorPerformanceInformation = 8
+    }
+
+    [DllImport("ntdll.dll")]
+    private static extern int NtQuerySystemInformation(
+      SystemInformationClass informationClass,
+      [Out] SystemProcessorPerformanceInformation[] informations, 
+      int structSize, out IntPtr returnLength);
+
+    private uint coreCount;
+    private uint logicalProcessorsPerCore;
+
+    private long systemTime;
+    private long[] idleTimes;
+
+    private float totalLoad;
+    private float[] coreLoads;
+
+    private bool available = false;
+
+    private long[] GetIdleTimes() {
+      long[] result = new long[coreCount * logicalProcessorsPerCore];
+      SystemProcessorPerformanceInformation[] informations = new
+       SystemProcessorPerformanceInformation[result.Length];
+
+      IntPtr returnLength;
+      NtQuerySystemInformation(
+        SystemInformationClass.SystemProcessorPerformanceInformation,
+        informations, informations.Length * 
+        Marshal.SizeOf(typeof(SystemProcessorPerformanceInformation)),
+        out returnLength);
+
+      for (int i = 0; i < result.Length; i++)
+        result[i] = informations[i].IdleTime;
+
+      return result;
+    }
+
+    public CPULoad(uint coreCount, uint logicalProcessorsPerCore) {
+      this.coreCount = coreCount;
+      this.logicalProcessorsPerCore = logicalProcessorsPerCore;
+      this.coreLoads = new float[coreCount];         
+      this.systemTime = DateTime.Now.Ticks;
+      this.totalLoad = 0;
+      try {
+        this.idleTimes = GetIdleTimes();
+      } catch (Exception) {
+        this.idleTimes = null;
+      }
+      if (idleTimes != null)
+        available = true;
+    }
+
+    public bool IsAvailable {
+      get { return available; }
+    }
+
+    public float GetTotalLoad() {
+      return totalLoad;
+    }
+
+    public float GetCoreLoad(int core) {
+      return coreLoads[core];
+    }
+
+    public void Update() {
+      if (this.idleTimes == null)
+        return;
+
+      long systemTime = DateTime.Now.Ticks;
+      long[] idleTimes = GetIdleTimes();
+
+      if (systemTime - this.systemTime < 10000)
+        return;
+
+      float total = 0;
+      for (int i = 0; i < coreCount; i++) {
+        float value = 0;
+        for (int j = 0; j < logicalProcessorsPerCore; j++) {
+          long index = i * logicalProcessorsPerCore + j;
+          long delta = idleTimes[index] - this.idleTimes[index];
+          value += delta;
+          total += delta;
+        }
+        value = 1.0f - value / (logicalProcessorsPerCore * 
+          (systemTime - this.systemTime));
+        value = value < 0 ? 0 : value;
+        coreLoads[i] = value * 100;
+      }
+      total = 1.0f - total / (coreCount * logicalProcessorsPerCore *
+        (systemTime - this.systemTime));
+      total = total < 0 ? 0 : total;
+      this.totalLoad = total * 100;
+
+      this.systemTime = systemTime;
+      this.idleTimes = idleTimes;
+    }
+
+  }
+}