Microsoft KB Archive/315760

= FRS Service Leaks a Large Amount of Private Bytes in a Network with a Large Number of Domain Controllers =

Article ID: 315760

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 2

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This article was previously published under Q315760



SYMPTOMS
If you have over 40 Windows 2000-based domain controllers in your domain, the domain controllers may experience a memory leak in private bytes in the Ntfrs.exe process. This problem may also occur in environments in which the polling interval of servers in DFS shares has been significantly increased. In most cases, the leak is proportional to the number of domain controllers.



CAUSE
This problem may be caused by a loop where a search for FRS DN settings occurs, and new setting objects are created instead of using the existing setting objects. In this process, the memory is not freed from the old setting object. The rate of the leak is related to the number of domain controllers and the polling interval. This symptom is more noticeable the smaller you specify the long polling interval.



RESOLUTION
To resolve this problem, apply the hotfix that is described in Q307319. For additional information about how to do so, click the article number below to view the article in the Microsoft Knowledge Base:

307319 Changes to the File Replication Service

To work around this problem, use either of the following methods.  Change the DS long polling interval from 5 minutes to 60 minutes. This reduces the leak by 60/5 (or 12). Refer to Q221111For additional information about how to change the DS long polling interval, click the article number below to view the article in the Microsoft Knowledge Base:

221111 Description of FRS Entries in the Registry

 Schedule a restart of the NTFRS service to free memory.



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

Keywords: kbbug kbenv kbnetwork KB315760

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