Microsoft KB Archive/198025

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NetShow Performance Counters May Not Return Any Data

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Q198025

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The information in this article applies to:


 * Microsoft NetShow Theater Server version 3.0

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SYMPTOMS
When you use the Windows NT Performance Data Helper API to retrieve counter information, no data is returned by the NetShow Station Service and NetShow Unicast Service performance counters.

CAUSE
A performance extension is expected to set the NumInstances member of the PERF_OBJECT_TYPE structure to -1 when the concerned performance object does not support multiple instances. The extension for the perf object called NetShow Unicast Service appears to set NumInstances to 0 instead. This causes the Windows NT Performance Data Helper API to assume that the object supports instances, but does not have any current instances. Therefore, no data is returned.

RESOLUTION
A supported fix that corrects this problem is now available from Microsoft, but 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 service pack.

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/directory/overview.asp" The English version of this fix should have the following file attributes or later:

  Date       Time     Size     File name      Platform 12/16/98  05:53p   19,328   Nscmperf.dll   (x86) 12/16/98  05:53p   19,328   Nsumperf.dll

WORKAROUND
Windows NT 4.0 Performance Monitor ignores the fact that NumInstances is 0 and displays the counter data anyway.

STATUS
Microsoft has confirmed this to be a problem in NetShow Theater Server version 3.0.

Additional query words: hotfix hot fix qfe quick fix engineering patch

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Issue type : kbbug

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