Microsoft KB Archive/838987

= System Monitor shows only one active CPU on a 64-bit multiprocessor in Windows Server 2003 =

Article ID: 838987

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, 64-Bit Datacenter Edition

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SYMPTOMS
When you use System Monitor to monitor the Processor object on a multiprocessor computer that is running a 64-bit version of Microsoft Windows Server 2003, System Monitor shows only one active processor. The processor that appears to be active is processor 0.



CAUSE
This problem occurs because a program calls the timeSetEvent function and sets the uResolution parameter to a value that is less than 10 milliseconds.



RESOLUTION
To resolve this problem, obtain the latest service pack for Microsoft Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003



WORKAROUND
To work around this problem, set the uResolution parameter in the timeSetEvent function to a value of 10 milliseconds or more.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article. This problem was first corrected in Microsoft Windows Server 2003 Service Pack 1.



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: SP sysmon

Keywords: kbwinxp64bit2003sp1fix atdownload kbpubtypekc kbpending kbbug kbfix kbwinserv2003presp1fix kbqfe kbhotfixserver KB838987

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