INTRODUCTION
This article introduces an update for computers that are running Windows 7 or Windows Server 2008 R2 and that have a processor from one of the following series installed:
-
AMD FX
-
AMD Opteron 4200/4300
-
AMD Opteron 6200/6300
-
AMD Opteron Bulldozer
Currently, the CPU scheduling techniques that are used by Windows 7 and Windows Server 2008 R2 are not optimized for the AMD Bulldozer module architecture. This architecture is found on AMD FX series, AMD Opteron 4200/4300 Series, and AMD Opteron 6200/6300 Series processors. Therefore, multithreaded workloads may not be optimally distributed on computers that have one of these processors installed in a lightly-threaded environment. This may result in decreased system performance for some applications.Important The power management policy for processor core parking on your computer may prevent this update from producing the desired performance increase. To disable core parking, install the hotfix that is described in Microsoft Knowledge Base (KB) article 2646060.
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 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 website:
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 update, you must be running one of the following operating systems:
-
Windows 7
-
Windows 7 Service Pack 1 (SP1)
-
Windows Server 2008 R2
-
Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
Registry information
To use the update 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 update.
Update replacement information
This update does not replace a previously released update.
File information
The English (United States) version of this update 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
-
The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
Version
Product
SR_Level
Service branch
6.1.760 0. 16xxx
Windows 7 and Windows Server 2008 R2
RTM
GDR
6.1.760 0. 20xxx
Windows 7 and Windows Server 2008 R2
RTM
LDR
6.1.760 1. 17xxx
Windows 7 and Windows Server 2008 R2
SP1
GDR
6.1.760 1. 21xxx
Windows 7 and Windows Server 2008 R2
SP1
LDR
-
GDR service branches contain only those fixes that are widely released to address widespread, extremely important issues. LDR service branches contain hotfixes in addition to widely released fixes.
-
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 |
|
|---|---|---|---|---|---|
|
Ntkrnlpa.exe |
6.1.7601.17730 |
3,968,368 |
24-Nov-2011 |
06:36 |
Not applicable |
|
Ntoskrnl.exe |
6.1.7601.17730 |
3,913,584 |
24-Nov-2011 |
06:36 |
Not applicable |
|
Ntkrnlpa.exe |
6.1.7601.21866 |
3,971,440 |
24-Nov-2011 |
06:33 |
Not applicable |
|
Ntoskrnl.exe |
6.1.7601.21866 |
3,916,656 |
24-Nov-2011 |
06:33 |
Not applicable |
|
Powrprof.dll |
6.1.7601.17730 |
145,920 |
24-Nov-2011 |
06:22 |
|
|
Powrprof.dll |
6.1.7601.21866 |
145,920 |
24-Nov-2011 |
06:19 |
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
|---|---|---|---|---|
|
Ntoskrnl.exe |
6.1.7601.17730 |
5,559,152 |
24-Nov-2011 |
07:30 |
|
Ntoskrnl.exe |
6.1.7601.21866 |
5,560,688 |
24-Nov-2011 |
07:22 |
|
Powrprof.dll |
6.1.7601.17730 |
166,912 |
24-Nov-2011 |
07:17 |
|
Powrprof.dll |
6.1.7601.21866 |
166,912 |
24-Nov-2011 |
07:11 |
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 updatesThe third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
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 |
X86_2dc11e5b8725bc103ad85d9014a63c9c_31bf3856ad364e35_6.1.7601.21866_none_16cb00e87fc3192e.manifest |
|
File version |
Not applicable |
|
File size |
697 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
X86_88c5023df903516a0c10fc42bbe18a1b_31bf3856ad364e35_6.1.7601.21866_none_54b4d01bb92b5a0a.manifest |
|
File version |
Not applicable |
|
File size |
707 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
X86_b7824833a4340cc0bc3d0b7c7f471380_31bf3856ad364e35_6.1.7601.17730_none_71048f0353670f5f.manifest |
|
File version |
Not applicable |
|
File size |
697 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
X86_db44d21e36e57293a4d87460fa4e0bf2_31bf3856ad364e35_6.1.7601.17730_none_281a4137bd4f8c6a.manifest |
|
File version |
Not applicable |
|
File size |
707 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.17730_none_6e1e2e581278f847.manifest |
|
File version |
Not applicable |
|
File size |
16,151 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
07:22 |
|
File name |
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.21866_none_6e8d5d1b2ba983ee.manifest |
|
File version |
Not applicable |
|
File size |
16,151 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
07:23 |
|
File name |
X86_microsoft-windows-userpowermanagement_31bf3856ad364e35_6.1.7601.17730_none_a5076b185b2e4550.manifest |
|
File version |
Not applicable |
|
File size |
3,069 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
07:16 |
|
File name |
X86_microsoft-windows-userpowermanagement_31bf3856ad364e35_6.1.7601.21866_none_a57699db745ed0f7.manifest |
|
File version |
Not applicable |
|
File size |
3,069 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
07:16 |
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
|
File name |
Amd64_2dc11e5b8725bc103ad85d9014a63c9c_31bf3856ad364e35_6.1.7601.21866_none_72e99c6c38208a64.manifest |
|
File version |
Not applicable |
|
File size |
699 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_353308bd502801e6ce3b49f8762609e0_31bf3856ad364e35_6.1.7601.21866_none_2754f68f22bf6a87.manifest |
|
File version |
Not applicable |
|
File size |
1,062 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_42c06791739a8341118fac980226ef13_31bf3856ad364e35_6.1.7601.21866_none_ffc2ef450274e471.manifest |
|
File version |
Not applicable |
|
File size |
1,042 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_4a242f7b540bb3910de63c70553c18d5_31bf3856ad364e35_6.1.7601.17730_none_4edc930bd9612f8c.manifest |
|
File version |
Not applicable |
|
File size |
701 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_776535ea1ac84184aea982d3fe99e184_31bf3856ad364e35_6.1.7601.17730_none_d10c726eaf1775a1.manifest |
|
File version |
Not applicable |
|
File size |
711 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_7f218ae293910621bf56988e85af7091_31bf3856ad364e35_6.1.7601.21866_none_f94b4afde062b430.manifest |
|
File version |
Not applicable |
|
File size |
701 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_88c5023df903516a0c10fc42bbe18a1b_31bf3856ad364e35_6.1.7601.21866_none_b0d36b9f7188cb40.manifest |
|
File version |
Not applicable |
|
File size |
709 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_97906969ff7ba521367ba8a4ecb91492_31bf3856ad364e35_6.1.7601.21866_none_5de734ed64900f5b.manifest |
|
File version |
Not applicable |
|
File size |
711 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_a3c24c92eae8d28602ee970cf0a54b16_31bf3856ad364e35_6.1.7601.17730_none_fe362fe6ee2da860.manifest |
|
File version |
Not applicable |
|
File size |
1,042 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_b7824833a4340cc0bc3d0b7c7f471380_31bf3856ad364e35_6.1.7601.17730_none_cd232a870bc48095.manifest |
|
File version |
Not applicable |
|
File size |
699 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_c6245ef6caa27d706f2b885da1bf9946_31bf3856ad364e35_6.1.7601.17730_none_084a17cb2cd864f7.manifest |
|
File version |
Not applicable |
|
File size |
1,062 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_db44d21e36e57293a4d87460fa4e0bf2_31bf3856ad364e35_6.1.7601.17730_none_8438dcbb75acfda0.manifest |
|
File version |
Not applicable |
|
File size |
709 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
21:47 |
|
File name |
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.17730_none_ca3cc9dbcad6697d.manifest |
|
File version |
Not applicable |
|
File size |
15,291 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
08:18 |
|
File name |
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.21866_none_caabf89ee406f524.manifest |
|
File version |
Not applicable |
|
File size |
15,291 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
08:11 |
|
File name |
Amd64_microsoft-windows-userpowermanagement_31bf3856ad364e35_6.1.7601.17730_none_0126069c138bb686.manifest |
|
File version |
Not applicable |
|
File size |
3,073 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
08:12 |
|
File name |
Amd64_microsoft-windows-userpowermanagement_31bf3856ad364e35_6.1.7601.21866_none_0195355f2cbc422d.manifest |
|
File version |
Not applicable |
|
File size |
3,073 |
|
Date (UTC) |
24-Nov-2011 |
|
Time (UTC) |
08:04 |
