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I have an application that uses one web service asmx file per screen (like 50 screens), I didn't think this was a problem until we did tests.

I tried with IIS7 on windows 2008, it hanged. Since its new to me I changed it to IIS6 on windows 2003, the same thing happened

IIS 6 creates tons of w3mp.exe processes, each 55 MB, and reaches a point where the application is usless.

It has been used only by 10 people at the same time...

any thoughts?

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Are there errors in the Application or System Event Logs? –  Jeff Jan 15 '10 at 0:05
    
Could you elaborate on what you mean by "screen"? –  phoebus Jan 15 '10 at 0:06
    
By screen I mean a use case or class or module. The errors are on the system event logs –  sergiogx Jan 16 '10 at 20:42
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ok I found out what the problem was.

First there is no diference between having multiple asmx files and 1 asmx file.

second, the server hang because I'm using informix, and programmed the application with the informix client sdk 3.5, which hanged randomly opening connections. So I changed all the code to ODBC and it worked like a charm.

third, we had 150 working processes on the connection pool, this created am w3mp.exe process per connection, it should have just 1 worker process.

so, everything works ok now, hope this helps someone out there.

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