DOCUMENT:Q246090 25-JUN-2000 [sms] TITLE :Excessive LSASS CPU Usage with Multiple SMS Sites in Same Domain PRODUCT :Microsoft Systems Management Server PROD/VER:winnt:2.0,2.0 SP1 OPER/SYS: KEYWORDS:kbsms200 kbsms200bug kbsms200sp2fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Systems Management Server versions 2.0, 2.0 SP1 ------------------------------------------------------------------------------- SYMPTOMS ======== If multiple Systems Management Server (SMS) site servers share the same Microsoft Windows NT-based domain, high amounts of network usage may occur at the beginning of each hour, on the hour. The CPU usage on the primary domain controller may also peak on the hour (with high usage by the LSASS process). CAUSE ===== This behavior occurs because Collection Evaluator on a primary site erroneously calls GetUserGroups a number of times during collection processing. Creating, deleting, or modifying a collection causes GetUserGroups to be called numerous times in quick succession (possibly up to 15 times). If many SMS primary sites share the same domain and there is a lot of collection activity, the primary domain controller may experience peaks in processor activity while it is handling multiple GetUserGroups calls. WORKAROUND ========== You can reduce the number of GetUserGroups calls that are sent to the domain controllers by extending the collection refresh times or by disabling collection refreshes altogether. RESOLUTION ========== To resolve this problem, obtain the latest service pack for Systems Management Server version 2.0. For additional information, please see the following article in the Microsoft Knowledge Base: Q236325 How to Obtain the Latest Systems Management Server 2.0 Service Pack STATUS ====== Microsoft has confirmed this to be a problem in Systems Management Server version 2.0. This problem was first corrected in Systems Management Server version 2.0 Service Pack 2. Additional query words: prodsms colleval ====================================================================== Keywords : kbsms200 kbsms200bug kbsms200sp2fix Technology : kbSMSSearch kbSMS200 kbSMS200SP1 Version : winnt:2.0,2.0 SP1 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.