KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q275494: PRB: IIS 4.0 Userdump Generates a Memory Dump w/ Remote PerfMon

Article: Q275494
Product(s): Internet Information Server
Version(s): 4.0
Operating System(s): 
Keyword(s): kbiis400
Last Modified: 14-JAN-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Internet Information Server 4.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

When you run a User Mode Process dump from the OEM Support Tools kit
(http://www.microsoft.com/downloads/release.asp) on a Microsoft Windows NT 4.0
Service Pack 6a (SP6a)/Internet Information Server (IIS) version 4.0 server that
is being remotely monitored by Performance Monitor, the User Mode Process dump
may repeatedly generate memory dump files. In addition you may see the following
events in the event log:

  Event ID: 201
  Src: Udmpsvc
  User Mode Process Dump service was started successfully.

  Event ID: 1010
  Source: Perflib
  The Collect Procedure for the "InetInfo" service in DLL "infoctrs.DLL"
  generated an exception or returned an invalid status. Performance data
  returned by counter DLL will be not be returned in Perf Data Block. Exception
  or status code returned is data DWORD 0.

CAUSE
=====

This problem occurs because the User Mode Process dump can only be configured to
dump a process on first chance exceptions. These dumps are being generated
because of first chance "access violations" that are handled by the performance
counters, which do not cause IIS to crash. However, because the User Mode
Process dump cannot be configured to ignore these first chance exceptions (or
first chance exceptions of any kind), it generates a dump file.

RESOLUTION
==========

There are two workarounds for this issue:

- Do not run performance monitor against the IIS server remotely while the User
  Mode Process dump is being used.

-or-

- Use the IIS Exception Monitor and the Script file customization wizard to
  configure the IIS Exception Monitor to ignore first chance access violations.

STATUS
======

This behavior is by design.

Additional query words: perfmon

======================================================================
Keywords          : kbiis400 
Technology        : kbiisSearch kbiis400
Version           : :4.0
Issue type        : kbprb

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.