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Q307191: BUG: VB 5.0 Setup.exe Consumes CPU, Installation Inefficient

Article: Q307191
Product(s): Microsoft Visual Basic for Windows
Version(s): 5.0
Operating System(s): 
Keyword(s): 
Last Modified: 16-MAY-2002

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The information in this article applies to:

- Microsoft Visual Basic Enterprise Edition for Windows, version 5.0 
- Microsoft Visual Basic Professional Edition for Windows, version 5.0 
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SYMPTOMS
========

You can use the Visual Basic 5.0 Setup Wizard to create the setup program for
your application. During the installation process, you may notice that Setup.exe
consumes a lot of CPU time even though Setup1.exe is the process that performs
the main installation tasks.

CAUSE
=====

When you run a setup program build with the Visual Basic Setup Wizard, the setup
program runs in two stages:

1. The Setup.exe (or "bootstrap) program runs to ensure that all system
  dependencies are in place. If so, Setup.exe starts Setup1.exe.

2. While Setup1.exe runs the portion of the setup that is based on the graphical
  user interface (GUI), Setup.exe waits in the background for Setup1.exe to
  finish. Setup.exe waits in the background so that it can clean up after
  Setup1.exe.

Setup.exe waits by means of a polling loop. This polling loop calls the
PeekMessage function with the PM_NOREMOVE value several times, calls the Yield
function, and then checks the exit code of the Setup1.exe process to see if
Setup1.exe has exited. If you watch this process in PerfMon on the system,
Setup.exe consumes all of the free CPU cycles as part of the polling loop.

RESOLUTION
==========

A supported fix that corrects this problem is now available from Microsoft, but
it has not been fully regression tested and should be applied only to computers
that are experiencing this specific problem.

NOTE: You must have a Visual Studio license agreement to obtain this fix.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

The English version of this fix should have the following file attributes or
later:

  Date        Time     Version      Size     File name
  ----------------------------------------------------
  31-Aug-2001 11:02am  5.0.92.31    87.5 KB  Setup.exe     




STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.

Additional query words: wastes CPU time

======================================================================
Keywords          :  
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB500
Version           : :5.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbpending

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