Microsoft KB Archive/227019

= SMS: Heartbeat Discovery Causes Performance Degradation =

Article ID: 227019

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Systems Management Server 2.0 Standard Edition

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This article was previously published under Q227019



SYMPTOMS
After you enable Heartbeat Discovery, performance degradation occurs when multiple users restart or log on to the network.



CAUSE
Each client generates a discovery data record (DDR) that contains information about the resource, and the client returns this file through the Systems Management Server hierarchy to the Systems Management Server site database.



WORKAROUND
To resolve this problem, install Systems Management Server version 2.0 Service Pack 1 (or later).



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

This problem was corrected in Microsoft Systems Management Server version 2.0 Service Pack 1.



MORE INFORMATION
Prior to installation of Service Pack 1, if you enabled the default settings to perform a heartbeat discovery, this generated what was known as a "Thursday morning rush hour". As observed in a Ccim32.log file, the default heartbeat period was set to start the discovery on January 1, 1998, which was a Thursday. Seven-day cycles from that date always ended on a Thursday. Consequently, there was a Thursday morning "rush" of heartbeat DDRs as users came in and turned on their computers. This would go unnoticed within a small network, but in a large organization, multiple DDRs working their way up the Systems Management Server hierarchy within a few hours of each other would significantly degrade the performance of the network.

Additional query words: prodsms

Keywords: kbbug kbsms200sp1fix KB227019

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