Microsoft KB Archive/175870

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Last reviewed: December 1, 1997

Article ID: Q175870 The information in this article applies to:
 * Microsoft Windows NT Workstation version 4.0
 * Microsoft Windows NT Server version 4.0

SYMPTOMS
After exporting a Performance Monitor log file to the .tsv file format, the Pages/Sec Memory Object will read -1.#I/O. This will occur when Pages/Sec spikes extremely high in the log. These readings in the .tsv file coincide exactly with the times the very high spikes occur on the chart.

RESOLUTION
Obtain the following fix or wait for the next Windows NT service pack.

This fix should have the following timestamp:

08/29/97 09:25a               186,128 Perfmon.exe (Intel) 08/29/97 09:42a               293,648 Perfmon.exe (Alpha)

STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0. A supported fix is now available, but has not been fully regression tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.
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