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  2. Performance is slow on a multiprocessor computer that is running Windows Server 2008 or Windows Vista

Performance is slow on a multiprocessor computer that is running Windows Server 2008 or Windows Vista

View products that this article applies to.

Symptoms

You encounter one of the following issues on a multiprocessor computer that is running Windows Server 2008 or Windows Vista:

Issue one

Performance is slow if the number of processors is greater than 64.

Issue two

Only half of the processors are started. For example, 12 processors are started on a computer that has 24 processors.

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Cause

Cause of issue one

Windows Server 2008 and Windows Vista assume that the number of processors in the computer should not be greater than 64. If the number of processors is greater than 64, Windows turns off non-uniform memory access (NUMA) optimization and runs in symmetric multiprocessor (SMP) mode. Therefore, performance is slow.

Cause of issue two

Windows Server 2008 and Windows Vista assume one or more physical processors per NUMA node. However, this assumption may be incorrect because of recent processor innovations such as multichip modules. Therefore, Windows incorrectly calculates the number of processors.

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Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, the computer must run one of the following:
  • Windows Vista Service Pack 1
  • Windows Vista Service Pack 2
  • Windows Server 2008
  • Windows Server 2008 Service Pack 2

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information


This hotfix does not replace any other previously released hotfixes.

File 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 item in Control Panel.

Windows Server 2008 and Windows Vista file information note


The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are
listed separatelyMUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008 and Windows Vista
File nameFile versionFile sizeDateTime
Halacpi.dll6.0.6001.22462139,33603-Jul-200913:27
Halmacpi.dll6.0.6001.22462174,68003-Jul-200913:27
Halacpi.dll6.0.6002.22163139,33603-Jul-200913:09
Halmacpi.dll6.0.6002.22163175,68803-Jul-200913:09
Ntkrnlpa.exe6.0.6001.224623,599,96003-Jul-200913:27Not Applicable
Ntoskrnl.exe6.0.6001.224623,547,72003-Jul-200913:27Not Applicable
Ntkrnlpa.exe6.0.6002.221633,599,92803-Jul-200913:09Not Applicable
Ntoskrnl.exe6.0.6002.221633,548,23203-Jul-200913:09Not Applicable
For all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTime
Hal.dll6.0.6001.22462230,48803-Jul-200913:59
Hal.dll6.0.6002.22163231,99203-Jul-200913:15
Ntoskrnl.exe6.0.6001.224624,682,32803-Jul-200914:00
Ntoskrnl.exe6.0.6002.221634,693,04803-Jul-200913:15
For all supported x64-based versions of Windows Server 2008 and Windows Vista
File nameFile versionFile sizeDateTime
Hal.dll6.0.6001.22462427,09603-Jul-200914:01
Hal.dll6.0.6002.22163428,10403-Jul-200912:58
Ntoskrnl.exe6.0.6001.224629,483,35203-Jul-200914:01
Ntoskrnl.exe6.0.6002.221639,461,81603-Jul-200912:58

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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.

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More Information


For more information about NUMA, visit the following Microsoft Web site:
http://msdn.microsoft.com/en-us/library/aa363804.aspx
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates


Additional file information for Windows Server 2008 and Windows Vista

Additional files for all supported x86-based versions of Windows Server 2008 and Windows Vista
File nameFile versionFile sizeDateTime
Package_1_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,15203-Jul-200922:16
Package_1_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable2,46803-Jul-200921:57
Package_2_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,16703-Jul-200922:16
Package_2_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable2,63503-Jul-200921:57
Package_3_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,15203-Jul-200922:16
Package_3_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable2,47303-Jul-200921:57
Package_4_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,15203-Jul-200922:16
Package_4_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable2,47503-Jul-200921:57
Package_5_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,15203-Jul-200922:16
Package_5_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable3,12503-Jul-200921:57
Package_6_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,15203-Jul-200922:16
Package_6_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable2,96303-Jul-200921:57
Package_7_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable10,15203-Jul-200922:16
Package_7_for_kb969468~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable2,96303-Jul-200921:57
Package_for_kb969468_client_1~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_client_1~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,36703-Jul-200921:57
Package_for_kb969468_client_2~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_client_2~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,69403-Jul-200921:57
Package_for_kb969468_client~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_client~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,71303-Jul-200921:57
Package_for_kb969468_sc_0~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_sc_0~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,42203-Jul-200921:57
Package_for_kb969468_sc_1~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_sc_1~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,69003-Jul-200921:57
Package_for_kb969468_sc~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_sc~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,70103-Jul-200921:57
Package_for_kb969468_server_0~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_server_0~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,42503-Jul-200921:57
Package_for_kb969468_server_1~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_server_1~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,69403-Jul-200921:57
Package_for_kb969468_server~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_server~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,71303-Jul-200921:57
Package_for_kb969468_winpesrv_0~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_winpesrv_0~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,42203-Jul-200921:57
Package_for_kb969468_winpesrv~31bf3856ad364e35~x86~~6.0.4.0.catNot Applicable7,56803-Jul-200922:16
Package_for_kb969468_winpesrv~31bf3856ad364e35~x86~~6.0.4.0.mumNot Applicable1,43003-Jul-200921:57
X86_3b00fb8da6f3c2bd0734bafb9015ef60_31bf3856ad364e35_6.0.6001.22462_none_668172404c3838a1.manifestNot Applicable69703-Jul-200921:57
X86_4f76691a41b837fc50aa8c13189413b9_31bf3856ad364e35_6.0.6002.22163_none_ac04a3b83406c97a.manifestNot Applicable69703-Jul-200921:57
X86_hal.inf_31bf3856ad364e35_6.0.6001.22462_none_0366d3b4213bd523.manifestNot Applicable2,24403-Jul-200922:04
X86_hal.inf_31bf3856ad364e35_6.0.6002.22163_none_054e45e61e61439e.manifestNot Applicable2,24403-Jul-200922:04
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22462_none_6c7b2529cd6f83fb.manifestNot Applicable17,80603-Jul-200914:57
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22163_none_6e62975bca94f276.manifestNot Applicable17,80603-Jul-200914:56
Additional files for all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTime
Ia64_bfec86bdd6948df96b9fd58cf3a8de16_31bf3856ad364e35_6.0.6001.22462_none_b4ef1f8b5f67e537.manifestNot Applicable69903-Jul-200921:57
Ia64_df23a8862d3027105518daa9aef368bb_31bf3856ad364e35_6.0.6002.22163_none_407500d353496413.manifestNot Applicable69903-Jul-200921:57
Ia64_hal.inf_31bf3856ad364e35_6.0.6001.22462_none_036877aa2139de1f.manifestNot Applicable1,65503-Jul-200921:58
Ia64_hal.inf_31bf3856ad364e35_6.0.6002.22163_none_054fe9dc1e5f4c9a.manifestNot Applicable1,65503-Jul-200921:58
Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22462_none_6c7cc91fcd6d8cf7.manifestNot Applicable16,81903-Jul-200914:48
Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22163_none_6e643b51ca92fb72.manifestNot Applicable16,81903-Jul-200913:44
Package_1_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:01
Package_1_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable2,47503-Jul-200921:57
Package_2_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable9,44003-Jul-200922:01
Package_2_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable2,48003-Jul-200921:57
Package_3_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable9,44003-Jul-200922:01
Package_3_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable2,48003-Jul-200921:57
Package_4_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:01
Package_4_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable2,80703-Jul-200921:57
Package_5_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable9,44003-Jul-200922:01
Package_5_for_kb969468~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable2,80703-Jul-200921:57
Package_for_kb969468_sc_0~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,58303-Jul-200922:01
Package_for_kb969468_sc_0~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,42503-Jul-200921:57
Package_for_kb969468_sc_1~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:01
Package_for_kb969468_sc_1~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,53003-Jul-200921:57
Package_for_kb969468_sc~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:01
Package_for_kb969468_sc~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,70603-Jul-200921:57
Package_for_kb969468_server_0~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,58303-Jul-200922:01
Package_for_kb969468_server_0~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,42903-Jul-200921:57
Package_for_kb969468_server_1~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:01
Package_for_kb969468_server_1~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,53403-Jul-200921:57
Package_for_kb969468_server~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:01
Package_for_kb969468_server~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,71803-Jul-200921:57
Package_for_kb969468_winpesrv_0~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,58303-Jul-200922:01
Package_for_kb969468_winpesrv_0~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,42603-Jul-200921:57
Package_for_kb969468_winpesrv~31bf3856ad364e35~ia64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:01
Package_for_kb969468_winpesrv~31bf3856ad364e35~ia64~~6.0.4.0.mumNot Applicable1,43403-Jul-200921:57
Additional files for all supported x64-based versions of Windows Server 2008 and Windows Vista
File nameFile versionFile sizeDateTime
Amd64_141d8942c633543f2b569536fcc87c85_31bf3856ad364e35_6.0.6002.22163_none_3f06b26876979c44.manifestNot Applicable70103-Jul-200921:58
Amd64_4a695f1edc0bf1bb97702a40a5fc2299_31bf3856ad364e35_6.0.6001.22462_none_3749602d5687f276.manifestNot Applicable70103-Jul-200921:58
Amd64_hal.inf_31bf3856ad364e35_6.0.6001.22462_none_5f856f37d9994659.manifestNot Applicable1,65603-Jul-200922:19
Amd64_hal.inf_31bf3856ad364e35_6.0.6002.22163_none_616ce169d6beb4d4.manifestNot Applicable1,65603-Jul-200922:19
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6001.22462_none_c899c0ad85ccf531.manifestNot Applicable16,51203-Jul-200915:01
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6002.22163_none_ca8132df82f263ac.manifestNot Applicable16,51203-Jul-200914:56
Package_1_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:21
Package_1_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable2,48203-Jul-200921:57
Package_2_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:21
Package_2_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable2,65103-Jul-200921:58
Package_3_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,44003-Jul-200922:21
Package_3_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable2,48703-Jul-200921:58
Package_4_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:21
Package_4_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable2,48903-Jul-200921:58
Package_5_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:21
Package_5_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable3,14703-Jul-200921:58
Package_6_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,45503-Jul-200922:21
Package_6_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable2,98303-Jul-200921:58
Package_7_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable9,44003-Jul-200922:21
Package_7_for_kb969468~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable2,98303-Jul-200921:58
Package_for_kb969468_client_1~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:21
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Package_for_kb969468_client_2~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,70603-Jul-200921:58
Package_for_kb969468_client~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:21
Package_for_kb969468_client~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,72303-Jul-200921:58
Package_for_kb969468_sc_0~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:21
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Package_for_kb969468_sc~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,71103-Jul-200921:58
Package_for_kb969468_server_0~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:21
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Package_for_kb969468_server_1~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,58303-Jul-200922:21
Package_for_kb969468_server_1~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,70603-Jul-200921:58
Package_for_kb969468_server~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,58303-Jul-200922:21
Package_for_kb969468_server~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,72303-Jul-200921:58
Package_for_kb969468_winpesrv_0~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,58303-Jul-200922:21
Package_for_kb969468_winpesrv_0~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,43003-Jul-200921:57
Package_for_kb969468_winpesrv~31bf3856ad364e35~amd64~~6.0.4.0.catNot Applicable7,56803-Jul-200922:21
Package_for_kb969468_winpesrv~31bf3856ad364e35~amd64~~6.0.4.0.mumNot Applicable1,43803-Jul-200921:58

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Keywords: kb, kbautohotfix, kbexpertiseadvanced, kbfix, kbsurveynew, kbqfe, kbhotfixserver

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Article Info
Article ID : 969468
Revision : 4
Created on : 3/30/2017
Published on : 3/30/2017
Exists online : False
Views : 267