FIX: Heap Allocations Are Slower for Computers That Have More Than Four Processors (823878)

SYMPTOMS

If the computer running SQL Server 7.0 has more than four processors, queries that must allocate significant space for a heap (a table without a clustered index), such as SELECT INTO, INSERT .. SELECT, may be slower in SQL Server 7.0 Service Pack 4 (SP4) than they did in SQL Server 7.0 SP2 or SQL Server 7.0 SP3. The query plans may be the same across versions, and the I/O that is reported by SET STATISTICS IO may also be the same, but the CPU utilization and elapsed time may be higher in SQL Server 7.0 SP4.

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this fix has the file attributes (or later) 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
   -----------------------------------------------------------------
   04-Oct-2002  23:59  7.00.1081          28,944  Dbmssocn.dll     
   06-Sep-2002  23:55  7.00.1077          53,520  Distrib.exe      
   06-Sep-2002  23:55  7.00.1077          98,576  Logread.exe      
   05-May-2003  18:34                     54,904  Opends60.dbg
   05-May-2003  18:34  7.00.1093         155,920  Opends60.dll     
   06-Sep-2002  23:56  7.00.1077         250,128  Rdistcom.dll     
   06-Sep-2002  23:55  7.00.1077          82,192  Replmerg.exe     
   06-Sep-2002  23:56  7.00.1077          78,096  Replres.dll      
   17-Sep-2002  22:52                      7,941  Securityhotfix.sql
   06-Sep-2002  23:56  7.00.1077         160,016  Snapshot.exe     
   30-May-2003  04:21                     59,214  Sp4_serv_uni.sql
   15-Jan-2003  01:33  7.00.1085         344,064  Sqlagent.exe     
   06-Sep-2002  23:55  7.00.1077          45,056  Sqlcmdss.dll     
   16-May-2003  00:18  7.00.1094       2,629,632  Sqldmo.dll       
   16-May-2003  13:29  7.00.1094          81,920  Sqlmap70.dll     
   30-Jun-2003  22:29  7.00.1097       5,062,928  Sqlservr.exe     
   04-Oct-2002  23:59  7.00.1081          45,328  Ssmsso70.dll     
   16-May-2003  00:18  7.00.1094          24,848  Ssnmpn70.dll     
   26-Sep-2002  20:30                     28,408  Ums.dbg
   26-Sep-2002  20:27  7.00.1079          57,616  Ums.dll          
   16-May-2003  13:31  7.00.1094         151,552  Xpweb70.dll

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

FIX: Heap Allocations Are Slower for Computers That Have More Than Four Processors (823878)

SYMPTOMS

RESOLUTION

WORKAROUND

STATUS