Article ID: 818769 - Last Review: October 25, 2005 - Revision: 3.2

FIX: Trace Flag -T8002 Treats an Affinity Mask Like a Process Affinity

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SYMPTOMS

This fix introduces a new startup trace flag, –T8002, that allows you to change the meaning of the affinity mask so that it is treated like a process affinity.

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To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

290211 (http://support.microsoft.com/kb/290211/ ) How to obtain the latest SQL Server 2000 service pack

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Hotfix information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date         Time   Version            Size    File name
--------------------------------------------------------------
26-Feb-2003  03:41  2000.80.777.0      29,244  Dbmslpcn.dl
25-Apr-2003  02:12                    786,432  Distmdl.ldf
25-Apr-2003  02:12                  2,359,296  Distmdl.mdf
30-Jan-2003  01:55                        180  Drop_repl_hotfix.sql
07-Apr-2003  19:15  2000.80.801.0   1,557,052  Dtsui.dll
24-Apr-2003  02:51                    747,927  Instdist.sql
30-Jan-2003  01:55                      1,402  Inst_repl_hotfix.sql
08-Feb-2003  06:40  2000.80.765.0      90,692  Msgprox.dll
01-Apr-2003  02:07                      1,873  Odsole.sql
05-Apr-2003  01:46  2000.80.800.0      62,024  Odsole70.dll
02-Apr-2003  21:48  2000.80.796.0      57,904  Osql.exe
02-Apr-2003  23:15  2000.80.797.0     279,104  Pfutil80.dll
04-Apr-2003  21:27                  1,083,467  Replmerg.sql
04-Apr-2003  21:53  2000.80.798.0     221,768  Replprov.dll
08-Feb-2003  06:40  2000.80.765.0     307,784  Replrec.dll
01-Apr-2003  02:23                  1,084,828  Replsys.sql
16-Apr-2003  22:39                    115,892  Sp3_serv_uni.sql
07-Apr-2003  17:44                     25,172  Sqldumper.exe
19-Mar-2003  18:20  2000.80.789.0      28,672  Sqlevn70.rll
24-Apr-2003  05:39  2000.80.811.0     176,696  Sqlmap70.dll
08-Feb-2003  06:40  2000.80.765.0      57,920  Sqlrepss.dll
30-Apr-2003  23:52  2000.80.816.0   7,540,817  Sqlservr.exe
08-Feb-2003  06:40  2000.80.765.0      45,644  Sqlvdi.dll
26-Feb-2003  03:41  2000.80.777.0      29,244  Ssmslpcn.dll
26-Feb-2003  03:41  2000.80.777.0      82,492  Ssnetlib.dll
30-Apr-2003  23:52  2000.80.816.0      45,132  Ums.dll
28-Feb-2003  01:34  2000.80.778.0      98,872  Xpweb70.dll

Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.This problem was first corrected in Microsoft SQL Server 2000 Service Pack 4.

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MORE INFORMATION

By default, the affinity mask for SQL Server is set to zero, permitting the SQL Server worker threads to use any available processor. When the affinity mask is set, the SQL Server worker thread is affinitized, and the worker thread can only use one specified processor. The addition of the SQL Server startup trace flag –T8002 treats the affinity mask like a process affinity and invokes the SetThreadAffinityMask function. However, the SQL Server thread affinity is set to all bits supplied in the affinity mask when the trace flag is used.

For example, if the affinity mask is set to 0x3 (processor 0 and 1) and the trace flag –T8002 is not used, half of the worker threads are affinitized to processor 0 and the other half are affinitized to processor 1. However, when the trace flag –T8002 is enabled and the affinity mask is set to 0x3, the worker threads are affinitized to both processors. If you set the trace flag and the affinity mask, you can limit the overall processors that SQL Server uses.

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For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

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