DOCUMENT:Q255820  11-JUN-2002  [sms]
TITLE   :SMS: SMS_NT_Logon_Server_Manager Component Is Now Multithreaded
PRODUCT :Microsoft Systems Management Server
PROD/VER:winnt:2.0
OPER/SYS:
KEYWORDS:kbenv kbsms200 kbsms200bug kbsms200fix kbsms200sp2fix

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The information in this article applies to:

 - Microsoft Systems Management Server version 2.0 
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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

   Q256986 Description of the Microsoft Windows Registry

SUMMARY
=======

In large Microsoft Windows NT and Microsoft Windows 2000 domains that contain
many domain controllers and multiple sites with Windows NT Logon Discovery or
Windows NT Logon Installation enabled, there may be competition for control of
the domain during logon point updates. This can cause sites to be marked as
inactive (dead), which results in the uninstallation of the logon point
components for that site on all domain controllers. An indication of this
condition is the absence of a folder corresponding with the site code for the
site in the Smslogon\Sites folder on the domain controllers.

SMS_NT_Logon_Server_Manager (LSM) is a thread of SMS_Executive that handles the
creation and management of logon points for the site. Before Service Pack 2, LSM
was a single-threaded program so it could only update one domain controller at a
time.

In Systems Management Server (SMS) 2.0 Service Pack 2 and later, LSM is a
multithreaded program. Because of this change, the time it takes to complete a
logon server management cycle is reduced significantly. There is also a change
to the behavior of LSM as it relates to LSM marking the sites as inactive
(dead).

For additional information about this change, click the article number below to
view the article in the Microsoft Knowledge Base:

   Q259816 SMS: Changes to the Way SMS Logon Server Manager Handles Inactive
   Sites

For additional information on how to obtain the latest Systems Management Server
2.0 service pack, click the article number below to view the article in the
Microsoft Knowledge Base:

   Q236325 How to Obtain the Latest Systems Management Server 2.0 Service Pack

MORE INFORMATION
================

WARNING: If you use Registry Editor incorrectly, you may cause serious problems
that may require you to reinstall your operating system. Microsoft cannot
guarantee that you can solve problems that result from using Registry Editor
incorrectly. Use Registry Editor at your own risk.

To change the number of threads assigned to LSM, use the following steps:

1. Start Registry Editor (Regedt32.exe).

2. Locate the Max Concurrent Threads for Updating BDCs value in the following
   registry key:

   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SMS\Components\SMS_NT_Logon_Server_Manager

3. On the Edit menu, click DWORD.

4. Type the appropriate number of threads, and then click OK.

5. Quit Registry Editor.

Additional query words: prodsms multi-thread multi-threaded

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Keywords          : kbenv kbsms200 kbsms200bug kbsms200fix kbsms200sp2fix 
Technology        : kbSMSSearch kbSMS200
Version           : winnt:2.0
Issue type        : kbinfo

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