Exe Runs Slow on Web Site

[Meleagant]

All,

I have to call an exe (C program written by another developer) from my web site. When run from a command prompt the exe flies, processes in half an hour. When run from the web site it is slow as all get out, processes in 5 hours).

WHY!?!?!?!

I don't think I am starting my new thread incorrectly or even calling the Process.Start incorrectly. But why does would the Exe run a hec of a lot slower when called through the web application?

The Request is initiated through a web service call:

<WebMethod()> Public Function RunCostAcctProcesses(ByVal param1 As String, ByVal param2 As String) As String

  Dim clsProc As New RunProcesses(param1, param2)

  Dim newThread As Thread = New Thread(New ParameterizedThreadStart(AddressOf RunCostProcesses))
  newThread.Start(clsProc)

  Return String.Empty

End Function

The New Thread is started:

Private Sub RunCostProcesses(ByVal obj As Object)

  'RunProcesses is my class where I can call all of my different exes.
  Dim clsTest As RunProcesses = CType(obj, RunProcesses)
  clsTest.Start()

End Sub

Then the exe is actually run here:

Private Sub RunPhase1()

  Dim psi As System.Diagnostics.ProcessStartInfo
  Dim processPath As String

  processPath = "C:\Inetpub\[URL unfurl="true"]wwwroot\Dev\Utilities\Process1.exe"[/URL]

  psi = New System.Diagnostics.ProcessStartInfo(processPath)
  psi.UseShellExecute = True

  Dim arguments As New StringBuilder
  arguments.AppendFormat(" {0} {1}", Me.Param1, Me.Param2)

  psi.Arguments = arguments.ToString

  Dim proc As New System.Diagnostics.Process
  proc = System.Diagnostics.Process.Start(psi)
  proc.WaitForExit()

End Sub

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