Health Monitoring

refering to the following article: http://msdn.microsoft.com/en-us/library/yc5yk01w.aspx
 
<eventMappings>
      <add name="All Events"
           type="System.Web.Management.WebBaseEvent,
      System.Web,Version=2.0.0.0,Culture=neutral,
          PublicKeyToken=b03f5f7f11d50a3a" startEventCode="0" endEventCode="2147483647" />
      <add name="Heartbeats"
           type="System.Web.Management.WebHeartbeatEvent,
      System.Web,Version=2.0.0.0,Culture=neutral,
           PublicKeyToken ...