DOCUMENT:Q142048 08-AUG-2001 [winnt] TITLE :WinNT 3.51 SP2 Increases Performance and Resolves SQL Slowdowns PRODUCT :Microsoft Windows NT PROD/VER:winnt:3.51 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 3.51 ------------------------------------------------------------------------------- SUMMARY ======= This article points out the importance of Windows NT version 3.51 Service Pack 2 (or greater) and it's impact upon SQL Server versions 4.21a SQL 6.0. MORE INFORMATION ================ The addition of Service Pack 2 (or greater) to Servers running Windows NT version 3.51 with Service Pack 1 dramatically improves SQL Server performance in several documented cases. Service Pack 2 contains a change to the Windows NT Kernel (for both single and multiprocessor computers) that resolves a temporary freeze condition that could have significant impact on SQL Server performance. Due to the resolution of this problem, it is very important that SP2 or higher be installed on computers running SQL Server. STATUS ====== Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem was corrected in the latest U.S. Service Pack for Windows NT Server version 3.51. For information on obtaining this update, 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 ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNT351search kbWinNTSsearch kbWinNTS351 kbWinNTS351search Version : winnt:3.51 ============================================================================= 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 2001.