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IIS logs can be setup from IIS\Website\Logging
and the default path is %SystemDrive%\inetpub\logs\LogFiles
for debugging an ASP.net application performance also from VS 2012 / Analyze / Start Performance Analysis
Process Monitor is also advance monitoring tools form microsoft
http://technet.microsoft.com/en-us/sysinternals/bb896645
Debug Diagnostic Tool can be used for monitoring application pool usage.
http://www.microsoft.com/en-us/download/details.aspx?id=26798
How to user diagnostic tool
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Every Application pool has its own w3wp.exe which is running on application pool identity.
From Features View of IIS Click on "Worker Processes", the request can be seen for each process of application pool.
IIS logs can be setup from IIS\Website\Logging
and the default path is %SystemDrive%\inetpub\logs\LogFiles
for debugging an ASP.net application performance also from VS 2012 / Analyze / Start Performance Analysis
Process Monitor is also advance monitoring tools form microsoft
http://technet.microsoft.com/en-us/sysinternals/bb896645
Debug Diagnostic Tool can be used for monitoring application pool usage.
http://www.microsoft.com/en-us/download/details.aspx?id=26798
How to user diagnostic tool
+
Every Application pool has its own w3wp.exe which is running on application pool identity.
From Features View of IIS Click on "Worker Processes", the request can be seen for each process of application pool.
Visual Studio.Net