Microsoft KB Archive/122838

= Memory Leak in LMREPL Service =

Article ID: 122838

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Server 3.5

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This article was previously published under Q122838



3.10 3.50

WINDOWS

kbnetwork kbbug3.10 kbbug3.50 kbfix3.50.sp2



SYMPTOMS
The Directory Replicator Service (LMREPL) in Windows NT Server version 3.5 and Windows NT Advanced Server version 3.1 has a memory leak, which can slowly consume nonpaged pool resources and as a result, it can degrade system performance.



CAUSE
The leak appears to be located at the client side of LMREPL which wakes up each 15 minutes to perform a replication, depending on the results of a cyclic redundancy check (CRC). Each 15-minute pulse consumes approximately 1 kilobyte (K) of nonpaged pool.



WORKAROUND
Periodically, the Directory Replicator can be stopped and restarted to free the memory; this should be done at regular intervals (every two weeks or so) until a fix is available.

To monitor this resource, use Performance Monitor to look at Object , Instance , Counter . The initial value should be approximately 9860 bytes and values larger than this can indicate a leak. Over a period of weeks, this value can grow to 3 megabytes (MB) or more.



STATUS
Microsoft has confirmed this to be a problem in Windows NT Advanced Server version 3.1 and Windows NT Server version 3.5. This problem was corrected in the latest U.S. Service Pack for Windows NT version 3.5. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

  S E R V P A C K

Additional query words: prodnt 3.10 perfmon

Keywords: KB122838

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