BUG: Applications Using WMI Perfmon Provider Cause Memory Leaks in WinMgmt

• Microsoft Windows NT, versions 4.0, 4.0 SP4
• Windows Management Instrumentation, version 1.0

SYMPTOMS

Running Healthmon or other applications that use the Windows Management Instrumentation (WMI) Perfmon Provider causes memory leaks in WinMgmt.

CAUSE

This problem is due to a bug in Perfctrs.dll; it does not call into Perf Provider DLLs to clean up their memory when the performance data is closed.

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 systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, 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/support/supportnet/default.asp

STATUS

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

MORE INFORMATION

For additional information about this issue and the related fix, please see the following article in the Microsoft Knowledge Base:

Q196270 SNMP Agent Leaks Memory When Queried

Additional query words: memory leak healthmon perfmon provider WMI WBEM SMS WinMgmt CIMOM

Keywords          : kbNTOS400 kbWMI kbWMI100Bug 
Version           : winnt:1.0,4.0,4.0 SP4
Platform          : winnt 
Issue type        : kbbug 

Last Reviewed: May 7, 1999