Symptoms

Consider the following scenario:

  • You have a computer that is running Windows Server 2008 R2 or Windows 7.

  • The computer has non-uniform memory access (NUMA)-based processors.

  • A thread requests a large amount of physical memory that is within the first 4 gigabytes (GB) of memory.

  • There is not enough sufficient physical memory within the first 4 GB of memory for the request. Therefore, Memory Manager has to swap pages to increase the available physical memory.

In this scenario, the operating system requires a long time to satisfy the memory request. For example, the operating system requires several seconds to satisfy the memory request. In this period, the CPU usage is high.

Cause

This issue occurs because Memory Manager moves memory pages to virtual memory on all nodes even when the nodes do not have physical memory that is within the first 4 GB of memory. However, this behavior is not necessary. Therefore, the performance issue occurs that is described in the "Symptoms" section.

Resolution

To resolve this issue, install this hotfix. After you install this hotfix, Memory Manager moves memory pages to virtual memory on only the nodes that have physical memory within the requested range.

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 the problem described in this article. 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=supportNote 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.

Prerequisites

To apply this hotfix, you must be running Windows 7 or Windows Server 2008 R2.

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 and Windows Server 2008 R2 file information notes


Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Ntdll.dll

6.1.7600.20731

1,286,440

11-Jun-2010

07:14

x86

Ntkrnlpa.exe

6.1.7600.20731

3,965,320

11-Jun-2010

07:21

Not Applicable

Ntoskrnl.exe

6.1.7600.20731

3,909,504

11-Jun-2010

07:21

Not Applicable

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Ntdll.dll

6.1.7600.20731

1,736,600

11-Jun-2010

05:59

x64

Ntoskrnl.exe

6.1.7600.20731

5,477,256

11-Jun-2010

06:02

x64

Ntdll.dll

6.1.7600.20731

1,290,568

11-Jun-2010

07:14

x86

Ntkrnlpa.exe

6.1.7600.20731

3,965,320

11-Jun-2010

07:21

Not Applicable

Ntoskrnl.exe

6.1.7600.20731

3,909,504

11-Jun-2010

07:21

Not Applicable

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Ntdll.dll

6.1.7600.20731

2,783,232

11-Jun-2010

04:59

IA-64

Ntoskrnl.exe

6.1.7600.20731

11,129,216

11-Jun-2010

05:02

IA-64

Ntdll.dll

6.1.7600.20731

1,290,568

11-Jun-2010

07:14

x86

Ntkrnlpa.exe

6.1.7600.20731

3,965,320

11-Jun-2010

07:21

Not Applicable

Ntoskrnl.exe

6.1.7600.20731

3,909,504

11-Jun-2010

07:21

Not Applicable

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

The following table provides more information about the products or tools that automatically check for this condition on your instance of SQL Server and on the versions of the SQL Server product against which the rule is evaluated.


Rule software

Rule title

Rule description

Product versions against which the rule is evaluated

System Center Advisor

Windows operating system missing update KB2155311 to prevent performance issues on a NUMA based computer

System Center Advisor detects the version of NTOSKRNL.EXE file, the NUMA configuration and the presence of SQL Server instances on the monitored computer and generates this alert. Review the information in this article and apply the fix to prevent poor performance on NUMA based computers that are running SQL Server.

SQL Server 2008

SQL Server 2008 R2

SQL Server 2012

References

For more information about software update terminology, 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

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

Update.mum

File version

Not Applicable

File size

1,881

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

X86_04264acaa7d7aabde54d6fb67d04d2d0_31bf3856ad364e35_6.1.7600.20731_none_420d27620bd0b10b.manifest

File version

Not Applicable

File size

697

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

X86_581062e74d433c36df8e36ee5d8d87d4_31bf3856ad364e35_6.1.7600.20731_none_929118d5c9988de2.manifest

File version

Not Applicable

File size

693

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

X86_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_5968e5567679e7b5.manifest

File version

Not Applicable

File size

3,802

Date (UTC)

11-Jun-2010

Time (UTC)

07:45

Platform

Not Applicable

File name

X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc268b52e6f4e07.manifest

File version

Not Applicable

File size

16,151

Date (UTC)

11-Jun-2010

Time (UTC)

07:53

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_04264acaa7d7aabde54d6fb67d04d2d0_31bf3856ad364e35_6.1.7600.20731_none_9e2bc2e5c42e2241.manifest

File version

Not Applicable

File size

699

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Amd64_14fed2ffa49769d9e75ec6728c65f4a4_31bf3856ad364e35_6.1.7600.20731_none_2c5658d6479dedf6.manifest

File version

Not Applicable

File size

701

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Amd64_57a77acd6f82c92e0289ba25a0649f70_31bf3856ad364e35_6.1.7600.20731_none_3895f6148c45f62a.manifest

File version

Not Applicable

File size

697

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Amd64_76ade3a09828c724dba0f5b0f1ebbdb6_31bf3856ad364e35_6.1.7600.20731_none_e57060d458415e3a.manifest

File version

Not Applicable

File size

697

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Amd64_ad3c7ed603f842e508dde41aed1a47d2_31bf3856ad364e35_6.1.7600.20731_none_3652421c2d3d246f.manifest

File version

Not Applicable

File size

1,036

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Amd64_b4d538fb3154570d4485551d96200e14_31bf3856ad364e35_6.1.7600.20731_none_2438eb75e87f2a8a.manifest

File version

Not Applicable

File size

1,042

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Amd64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_b58780da2ed758eb.manifest

File version

Not Applicable

File size

3,806

Date (UTC)

11-Jun-2010

Time (UTC)

08:32

Platform

Not Applicable

File name

Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_c8e10438e6ccbf3d.manifest

File version

Not Applicable

File size

15,291

Date (UTC)

11-Jun-2010

Time (UTC)

08:40

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,537

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Wow64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_bfdc2b2c63381ae6.manifest

File version

Not Applicable

File size

3,566

Date (UTC)

11-Jun-2010

Time (UTC)

07:41

Platform

Not Applicable

File name

X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc268b52e6f4e07.manifest

File version

Not Applicable

File size

16,151

Date (UTC)

11-Jun-2010

Time (UTC)

07:53

Platform

Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_04264acaa7d7aabde54d6fb67d04d2d0_31bf3856ad364e35_6.1.7600.20731_none_420ecb580bceba07.manifest

File version

Not Applicable

File size

698

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Ia64_38af53f9bf3550c0a6e076484e98e896_31bf3856ad364e35_6.1.7600.20731_none_855043cc12d015a2.manifest

File version

Not Applicable

File size

699

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Ia64_490c3871c2b892a999b7e15b81197bd9_31bf3856ad364e35_6.1.7600.20731_none_74f14de3d5c0e50c.manifest

File version

Not Applicable

File size

695

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Ia64_76ade3a09828c724dba0f5b0f1ebbdb6_31bf3856ad364e35_6.1.7600.20731_none_895369469fe1f600.manifest

File version

Not Applicable

File size

696

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Ia64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_596a894c7677f0b1.manifest

File version

Not Applicable

File size

3,804

Date (UTC)

11-Jun-2010

Time (UTC)

08:30

Platform

Not Applicable

File name

Ia64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc40cab2e6d5703.manifest

File version

Not Applicable

File size

15,289

Date (UTC)

11-Jun-2010

Time (UTC)

08:37

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

1,690

Date (UTC)

11-Jun-2010

Time (UTC)

16:08

Platform

Not Applicable

File name

Wow64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_bfdc2b2c63381ae6.manifest

File version

Not Applicable

File size

3,566

Date (UTC)

11-Jun-2010

Time (UTC)

07:41

Platform

Not Applicable

File name

X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc268b52e6f4e07.manifest

File version

Not Applicable

File size

16,151

Date (UTC)

11-Jun-2010

Time (UTC)

07:53

Platform

Not Applicable

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