windbg
1, symbols : srv*c:\symbols*http://msdl.microsoft.com/download/symbols
2,.loadby sos mscorwks or
参考:
http://cxfksword.github.io/blog/intro-to-windbg-for-dotnet-developers/
http://www.cnblogs.com/shanyou/archive/2006/12/23/601004.html