在高负载下提供ASP.NET应用程序时，IIS崩溃。如何排除故障？

I am working on an ASP.NET web application, it seems to be working properly when I try to debug it in Visual Studio. However when I emulate heavy load, IIS crashes without any trace -- log entry in the system journal is very generic, "The World Wide Web Publishing service terminated unexpectedly. It has done this 4 time(s)." How is it possible to get more information from IIS to troubleshoot this problem?I am working on an ASP.NET web application, it