.NET
(for internal use&search)

• .NET Performance Counters
  http://www.extremeexperts.com/Net/Articles/NetCounters.aspx
  http://www.aspheute.com/english/20000809.asp
  http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/97d0872a-96b3-41e4-8997-b174a9dbb87f.mspx?mfr=true
  http://msdn2.microsoft.com/en-us/library/fxk122b4(VS.80).aspx
  
• Debugging
  http://blogs.msdn.com/tess/archive/2006/10/16/net-hang-debugging-walkthrough.aspx (Tess Blog)
  http://dotnetdebug.blogspot.com/ (Advanced .NET Debugging)
  http://blogs.msdn.com/vancem/ (Vance Morrison)
  http://blogs.msdn.com/ricom (Rico Mariani Performance)