Q202183: The OID for memPercentCommittedBytesInUse Always Returns Zero

Article: Q202183
Product(s): Microsoft Windows NT
Version(s): 4.0
Operating System(s): 
Keyword(s): 
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

The object ID (OID) for the memPercentCommittedBytesInUse memory counter does
not return the correct value when you issue a Simple Network Management Protocol
(SNMP) GET or WALK command. This value is the ratio of the Committed Bytes to
the Commit Limit values.

STATUS
======

Microsoft has confirmed that this is a problem in Microsoft Windows NT Server
4.0.

MORE INFORMATION
================

You can create Performance Monitor objects using the Perfmib tools in the
Microsoft Windows NT 4.0 Resource Kit. Use the following steps to create a
Management Information Base (MIB), which exposes the Performance Monitor memory
objects:

1. At a command prompt, run the Perfmib.reg tool from the Windows NT 4.0
  Resource Kit. This creates the appropriate registry entries for the
  Perfmib.dll extension agent.

2. Build a Perfmib.mib file and a Perfmib.ini file using the Per2mib.exe tool
  from the Windows NT 4.0 Resource Kit. For example, at a command prompt, type
  the following command:

  "perf2mib perfmib.mib perfmib.ini memory 200 mem" (without the quotation
  marks)

  This creates a Perfmib.mib file and a Perfmib.ini file. These files are used
  to expose the Performance Monitor memory object.

3. At a command prompt, stop the SNMP service by typing "net stop snmp" (without
  the quotation marks). (You can also stop the SNMP service using the Services
  tool in Control Panel.)

4. Find the Mib.bin file in the System32 folder and rename it to Mib.old.

5. Use the following steps to compile a new Mib.bin file (that includes the
  Perfmib.mib file created in step 2):

  a. At a command prompt, set the default folder to the Windows NT 4.0 Resource
     Kit folder (for example, type "cd <ntreskit>" (without the quotation
     marks), where <ntreskit> is the Windows NT 4.0 Resource Kit folder).

  b. Type the following command: "mibcc -n o<ntreskit>\mib.bin -t -w2
     smi.mib lmmib2.mib mib_ii.mib perfmib.mib" (without the quotation marks)

6. Copy the following files from the Windows NT 4.0 Resource Kit folder
  (<ntreskit>) to the System32 folder (%SystemRoot%\System32):

   - Mib.bin

   - Perfmib.bin

   - Perfmib.ini

   - Perfmib.dll

7. At a command prompt, start the SNMP service by typing "net start snmp"
  (without the quotation marks). (You can also start the SNMP service using the
  Services tool in Control Panel.)

8. After you create the new MIB that contains the Performance Monitor memory
  objects, you can test it using the Snmputil.exe tool found in the Windows NT
  4.0 Resource Kit. To test the MIB:

  a. At a command prompt, type "cd <ntreskit>" (without the quotation
     marks). This changes the default folder to the resource kit folder.

  b. Use the Snmputil tool to walk the process OID tree. Type the following
     command:

  "snmputil walk localhost public .1.3.6.1.4.1.311.1.1.3.1.1.200.27.0" (without
  the quotation marks)

     Using this command always returns a value of 0 for the
     memPercentCommitBytesInUse memory counter, regardless of the values for
     Committed Bytes and Commit Limit. It should return the ratio of the
     Committed Bytes to the Commit Limit values.

REFERENCES
==========

For additional information, please read the following article in the Microsoft
Knowledge Base: Q139488 - How to Setup Windows NT SNMP Performance Counter Agent
Extension.

Additional query words:

======================================================================
Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : :4.0
Issue type        : kbbug
Solution Type     : kbpending

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