When moving .NET application from WIndows 2008 32 bit, IIS 7
to WIndows 2008 64 bit, IIS 7 monitoring significant performance degradation.
Testing the same hardware, same installed application, same business flow! Performance slower about 20-30% compared 32 bit machine.
Adding several application and environment details:
-Pure .NET 3.5 server side. C# and VB.NET, compiled as "Any CPU" (tested x64 compilation mode - same result)
-Windows 2008 R2 build 7600
-IIS 7 is running as "Classic" mode.
-Computer Dell, RAM 8GB, Intel Xeon CPU 3.20GHz 3.19 GHz (2 processors)
Please advise what can be configured/checked/tested to find out the problem.
Thanks in advance,