FIX: Adding multiple users to Active Directory can cause memory leak when setting passwords (274172)
The information in this article applies to:
- Microsoft Active Directory Services Interface, Microsoft Active Directory Client, when used with:
- the operating system: Microsoft Windows 2000
This article was previously published under Q274172 SYMPTOMS Adding many users (20,000 and more) through Active
Directory Services Interface (ADSI) code may cause the Lsass.exe process to
grow rapidly in size, and can result in performance problems on the client
computer. A system restart may be needed to restore normal performance and to
shrink Lsass.exe.
NOTE: One test found that adding 45,000 users resulted in Lsass.exe
growth of 9 megabytes (MB), which is approximately 200 bytes per user.
CAUSE The way that handles were referenced made it difficult to
track for proper release. The fix changes the way that handles are referenced
so that they may be released properly.
Note that even after you apply
this fix, Lsass.exe will still grow as you add users. But the growth should be
slower, a plateau will be reached, and memory will ultimately be recovered.
RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to obtain the latest Windows 2000 service pack
The following files are available for download from the Microsoft
Download Center:
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
The English version of this fix should have the
following file attributes or later:
Date Time Size File name
---------------------------------------------
01/09/2001 09:48a 130,320 Adsldpc.dll
01/09/2001 10:39a 348,944 Advapi32.dll
01/09/2001 10:39a 135,440 Dnsapi.dll
01/09/2001 10:39a 90,896 Dnsrslvr.dll
01/09/2001 10:40a 512,784 Instlsa5.dll
01/09/2001 10:40a 140,048 Kdcsvc.dll
11/15/2000 02:37p 207,408 Kerberos.dll
12/19/2000 09:13p 69,456 Ksecdd.sys
01/09/2001 10:39a 494,864 Lsasrv.dll
01/02/2001 08:45a 33,552 Lsass.exe
11/13/2000 02:46p 104,464 Msv1_0.dll
01/09/2001 10:40a 306,960 Netapi32.dll
01/09/2001 10:39a 355,600 Netlogon.dll
01/09/2001 10:40a 907,024 Ntdsa.dll
01/09/2001 10:39a 378,128 Samsrv.dll
01/09/2001 11:30a 753,023 Sp2.cat
01/09/2001 09:48a 123,664 Wldap32.dll
STATUSMicrosoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.MORE INFORMATIONSteps to reproduce the behavior Run code that uses a loop to add users and set the password by
using the IADsUser::SetPassword method.
After 20,000 to 30,000 users have been added,
Lsass.exe will have increased in size, and performance will be reduced. Memory
consumption by Lsass.exe does not level off, but continues to rise slowly.
| Modification Type: | Major | Last Reviewed: | 10/8/2006 |
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| Keywords: | kbbug kbfix kbgraphxlinkcritical kbWin2000PreSP2Fix KB274172 kbAudDeveloper |
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