Poor performance occurs on a computer that has NUMA-based processors and that is running Windows Server 2008 R2 or Windows 7 if a thread requests lots of memory that is within the first 4 GB of memory

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Article ID: 2155311 - View products that this article applies to.
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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=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.

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
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ntdll.dll6.1.7600.207311,286,44011-Jun-201007:14x86
Ntkrnlpa.exe6.1.7600.207313,965,32011-Jun-201007:21Not Applicable
Ntoskrnl.exe6.1.7600.207313,909,50411-Jun-201007:21Not Applicable
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ntdll.dll6.1.7600.207311,736,60011-Jun-201005:59x64
Ntoskrnl.exe6.1.7600.207315,477,25611-Jun-201006:02x64
Ntdll.dll6.1.7600.207311,290,56811-Jun-201007:14x86
Ntkrnlpa.exe6.1.7600.207313,965,32011-Jun-201007:21Not Applicable
Ntoskrnl.exe6.1.7600.207313,909,50411-Jun-201007:21Not Applicable
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Ntdll.dll6.1.7600.207312,783,23211-Jun-201004:59IA-64
Ntoskrnl.exe6.1.7600.2073111,129,21611-Jun-201005:02IA-64
Ntdll.dll6.1.7600.207311,290,56811-Jun-201007:14x86
Ntkrnlpa.exe6.1.7600.207313,965,32011-Jun-201007:21Not Applicable
Ntoskrnl.exe6.1.7600.207313,909,50411-Jun-201007:21Not 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.


Collapse this tableExpand this table
Rule softwareRule titleRule descriptionProduct versions against which the rule is evaluated
System Center AdvisorWindows operating system missing update KB2155311 to prevent performance issues on a NUMA based computerSystem 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
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot Applicable
File size1,881
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameX86_04264acaa7d7aabde54d6fb67d04d2d0_31bf3856ad364e35_6.1.7600.20731_none_420d27620bd0b10b.manifest
File versionNot Applicable
File size697
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameX86_581062e74d433c36df8e36ee5d8d87d4_31bf3856ad364e35_6.1.7600.20731_none_929118d5c9988de2.manifest
File versionNot Applicable
File size693
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameX86_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_5968e5567679e7b5.manifest
File versionNot Applicable
File size3,802
Date (UTC)11-Jun-2010
Time (UTC)07:45
PlatformNot Applicable
File nameX86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc268b52e6f4e07.manifest
File versionNot Applicable
File size16,151
Date (UTC)11-Jun-2010
Time (UTC)07:53
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_04264acaa7d7aabde54d6fb67d04d2d0_31bf3856ad364e35_6.1.7600.20731_none_9e2bc2e5c42e2241.manifest
File versionNot Applicable
File size699
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameAmd64_14fed2ffa49769d9e75ec6728c65f4a4_31bf3856ad364e35_6.1.7600.20731_none_2c5658d6479dedf6.manifest
File versionNot Applicable
File size701
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameAmd64_57a77acd6f82c92e0289ba25a0649f70_31bf3856ad364e35_6.1.7600.20731_none_3895f6148c45f62a.manifest
File versionNot Applicable
File size697
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameAmd64_76ade3a09828c724dba0f5b0f1ebbdb6_31bf3856ad364e35_6.1.7600.20731_none_e57060d458415e3a.manifest
File versionNot Applicable
File size697
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameAmd64_ad3c7ed603f842e508dde41aed1a47d2_31bf3856ad364e35_6.1.7600.20731_none_3652421c2d3d246f.manifest
File versionNot Applicable
File size1,036
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameAmd64_b4d538fb3154570d4485551d96200e14_31bf3856ad364e35_6.1.7600.20731_none_2438eb75e87f2a8a.manifest
File versionNot Applicable
File size1,042
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameAmd64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_b58780da2ed758eb.manifest
File versionNot Applicable
File size3,806
Date (UTC)11-Jun-2010
Time (UTC)08:32
PlatformNot Applicable
File nameAmd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_c8e10438e6ccbf3d.manifest
File versionNot Applicable
File size15,291
Date (UTC)11-Jun-2010
Time (UTC)08:40
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,537
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameWow64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_bfdc2b2c63381ae6.manifest
File versionNot Applicable
File size3,566
Date (UTC)11-Jun-2010
Time (UTC)07:41
PlatformNot Applicable
File nameX86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc268b52e6f4e07.manifest
File versionNot Applicable
File size16,151
Date (UTC)11-Jun-2010
Time (UTC)07:53
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_04264acaa7d7aabde54d6fb67d04d2d0_31bf3856ad364e35_6.1.7600.20731_none_420ecb580bceba07.manifest
File versionNot Applicable
File size698
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameIa64_38af53f9bf3550c0a6e076484e98e896_31bf3856ad364e35_6.1.7600.20731_none_855043cc12d015a2.manifest
File versionNot Applicable
File size699
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameIa64_490c3871c2b892a999b7e15b81197bd9_31bf3856ad364e35_6.1.7600.20731_none_74f14de3d5c0e50c.manifest
File versionNot Applicable
File size695
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameIa64_76ade3a09828c724dba0f5b0f1ebbdb6_31bf3856ad364e35_6.1.7600.20731_none_895369469fe1f600.manifest
File versionNot Applicable
File size696
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameIa64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_596a894c7677f0b1.manifest
File versionNot Applicable
File size3,804
Date (UTC)11-Jun-2010
Time (UTC)08:30
PlatformNot Applicable
File nameIa64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc40cab2e6d5703.manifest
File versionNot Applicable
File size15,289
Date (UTC)11-Jun-2010
Time (UTC)08:37
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size1,690
Date (UTC)11-Jun-2010
Time (UTC)16:08
PlatformNot Applicable
File nameWow64_microsoft-windows-ntdll_31bf3856ad364e35_6.1.7600.20731_none_bfdc2b2c63381ae6.manifest
File versionNot Applicable
File size3,566
Date (UTC)11-Jun-2010
Time (UTC)07:41
PlatformNot Applicable
File nameX86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7600.20731_none_6cc268b52e6f4e07.manifest
File versionNot Applicable
File size16,151
Date (UTC)11-Jun-2010
Time (UTC)07:53
PlatformNot Applicable
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Properties

Article ID: 2155311 - Last Review: August 27, 2012 - Revision: 3.0
Applies to
  • Windows 7 Enterprise
  • Windows 7 Professional
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Standard
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Standard without Hyper-V
  • Windows Server 2008 R2 Enterprise without Hyper-V
  • Windows Server 2008 R2 Datacenter without Hyper-V
  • Windows Server 2008 R2 for Itanium-Based Systems
Keywords: 
kbautohotfix kbqfe kbHotfixServer kbfix kbsurveynew kbexpertiseinter KB2155311

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