Microsoft KB Archive/135774

= Performance Monitor Counters Produce Unlikely Results =

Article ID: 135774

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51

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This article was previously published under Q135774





SYMPTOMS
When you use the HALAPIC.DLL hardware abstraction layer (HAL), applications that query performance counters may produce unlikely results. For example, Network Monitor Agent counters may produce numbers for network use that are known to be incorrect.



CAUSE
Applications that query Performance Counters on Intel based symmetric multi- processing (SMP) computers may receive incorrect timer information. As a result, counter values in Performance Monitor, and other programs that are calculated against this timer, may be incorrect.



RESOLUTION
To correct this problem, upgrade to Windows NT 3.51 (if you have not already done so) and install the latest U.S. Service Pack for Windows NT version 3.51.



STATUS
Microsoft has confirmed this to be a problem in Windows NT versions 3.5 and 3.51. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 3.51. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodnt

Keywords: KB135774

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