Some base values are not updated when you use the Win32_PerfRawData_PerfDisk_LogicalDisk WMI class to calculate performance data in Windows Vista or in Windows Server 2008

Symptoms

On a computer that is running Windows Vista or Windows Server 2008, you use some raw performance classes of Windows Management Instrumentation (WMI) to calculate performance data. However, you receive incorrect data from the performance classes.

For example, you calculate some performance data from the AvgDiskSecPerTransfer and AvgDiskBytesPerTransfer_Base values in the Win32_PerfRawData_PerfDisk_LogicalDisk class. However, the AvgDiskBytesPerTransfer_Base value is not updated as expected.

This problem does not occur when you use certain formatted performance classes, such as the Win32_PerfFormattedData_PerfDisk_LogicalDisk class.

Resolution

Hotfix information

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.

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 on a Windows Vista-based computer, you must have Windows Vista Service Pack 1 or Windows Vista Service Pack 2 installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

No prerequisites are required for Windows Server 2008-based computers.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The Global 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 Vista and Windows Server 2008 file information notes

  • The files that apply to a specific product, milestone (RTM,SPn), and service branch (LDR, GDR) can be identified by examining the fileversion numbers as shown in the following table.

    Version

    Product

    Milestone

    Service branch

    6.0.6001.18xxx

    Windows Vista SP1 and Windows Server 2008SP1

    SP1

    GDR

    6.0.6001.22xxx

    Windows Vista SP1 and Windows Server 2008SP1

    SP1

    LDR

    6.0.6002.18xxx

    Windows Vista SP2 and Windows Server 2008SP2

    SP2

    GDR

    6.0.6002.22xxx

    Windows Vista SP2 and Windows Server 2008SP2

    SP2

    LDR

  • Service Pack 1 is integrated into Windows Server 2008.

  • The MANIFEST files (.manifest) and the MUM files (.mum)that are installed for each environment are listed separately. MUM and MANIFEST files, andthe associated security catalog (.cat) files, are critical to maintaining thestate of the updated component. The security catalog files (attributes notlisted) are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Wmiperfclass.dll

6.0.6001.22434

91,136

15-May-2009

13:02

x86

Wmiperfclass.mof

Not Applicable

1,156

01-Apr-2009

19:06

Not Applicable

Wmiperfinst.dll

6.0.6001.22434

47,616

15-May-2009

13:02

x86

Wmiperfinst.mof

Not Applicable

980

01-Apr-2009

19:06

Not Applicable

Wmiperfclass.dll

6.0.6002.22137

91,136

15-May-2009

12:53

x86

Wmiperfclass.mof

Not Applicable

1,156

03-Apr-2009

22:00

Not Applicable

Wmiperfinst.dll

6.0.6002.22137

47,616

15-May-2009

10:27

x86

Wmiperfinst.mof

Not Applicable

980

03-Apr-2009

22:00

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Wmiperfclass.dll

6.0.6001.22434

137,216

15-May-2009

13:18

x64

Wmiperfclass.mof

Not Applicable

1,156

01-Apr-2009

16:21

Not Applicable

Wmiperfinst.dll

6.0.6001.22434

62,976

15-May-2009

13:18

x64

Wmiperfinst.mof

Not Applicable

980

01-Apr-2009

16:21

Not Applicable

Wmiperfclass.dll

6.0.6002.22137

137,216

15-May-2009

12:52

x64

Wmiperfclass.mof

Not Applicable

1,156

03-Apr-2009

20:55

Not Applicable

Wmiperfinst.dll

6.0.6002.22137

62,976

15-May-2009

12:52

x64

Wmiperfinst.mof

Not Applicable

980

03-Apr-2009

20:55

Not Applicable

Wmiperfclass.dll

6.0.6001.22434

91,136

15-May-2009

13:02

x86

Wmiperfclass.mof

Not Applicable

1,156

01-Apr-2009

19:06

Not Applicable

Wmiperfinst.dll

6.0.6001.22434

47,616

15-May-2009

13:02

x86

Wmiperfinst.mof

Not Applicable

980

01-Apr-2009

19:06

Not Applicable

Wmiperfclass.dll

6.0.6002.22137

91,136

15-May-2009

12:53

x86

Wmiperfclass.mof

Not Applicable

1,156

03-Apr-2009

22:00

Not Applicable

Wmiperfinst.dll

6.0.6002.22137

47,616

15-May-2009

10:27

x86

Wmiperfinst.mof

Not Applicable

980

03-Apr-2009

22:00

Not Applicable

For all supported Itanium-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Wmiperfclass.dll

6.0.6001.22434

290,816

15-May-2009

12:55

IA-64

Wmiperfclass.mof

Not Applicable

1,156

01-Apr-2009

16:21

Not Applicable

Wmiperfinst.dll

6.0.6001.22434

151,040

15-May-2009

12:55

IA-64

Wmiperfinst.mof

Not Applicable

980

01-Apr-2009

16:21

Not Applicable

Wmiperfclass.dll

6.0.6002.22137

290,816

15-May-2009

12:44

IA-64

Wmiperfclass.mof

Not Applicable

1,156

03-Apr-2009

20:55

Not Applicable

Wmiperfinst.dll

6.0.6002.22137

151,040

15-May-2009

12:44

IA-64

Wmiperfinst.mof

Not Applicable

980

03-Apr-2009

20:55

Not Applicable

Wmiperfclass.dll

6.0.6001.22434

91,136

15-May-2009

13:02

x86

Wmiperfclass.mof

Not Applicable

1,156

01-Apr-2009

19:06

Not Applicable

Wmiperfinst.dll

6.0.6001.22434

47,616

15-May-2009

13:02

x86

Wmiperfinst.mof

Not Applicable

980

01-Apr-2009

19:06

Not Applicable

Wmiperfclass.dll

6.0.6002.22137

91,136

15-May-2009

12:53

x86

Wmiperfclass.mof

Not Applicable

1,156

03-Apr-2009

22:00

Not Applicable

Wmiperfinst.dll

6.0.6002.22137

47,616

15-May-2009

10:27

x86

Wmiperfinst.mof

Not Applicable

980

03-Apr-2009

22:00

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

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 for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Package_1_for_kb961435~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,942

18-May-2009

15:05

Not Applicable

Package_2_for_kb961435~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,780

18-May-2009

15:05

Not Applicable

Package_3_for_kb961435~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,780

18-May-2009

15:05

Not Applicable

Package_4_for_kb961435~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

2,430

18-May-2009

15:05

Not Applicable

Package_5_for_kb961435~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

2,268

18-May-2009

15:05

Not Applicable

Package_6_for_kb961435~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

2,269

18-May-2009

15:05

Not Applicable

Package_for_kb961435_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,367

18-May-2009

15:05

Not Applicable

Package_for_kb961435_client_2~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,693

18-May-2009

15:05

Not Applicable

Package_for_kb961435_client~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,713

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,421

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,690

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,701

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,425

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,694

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,713

18-May-2009

15:05

Not Applicable

X86_0ce517af7506d2ca06cc71c55a43030e_31bf3856ad364e35_6.0.6002.22137_none_71434911a0b9a3dd.manifest

Not Applicable

695

18-May-2009

15:05

Not Applicable

X86_9f661a401a852be75464fb55e83f9479_31bf3856ad364e35_6.0.6001.22434_none_6910d332f5f07113.manifest

Not Applicable

695

18-May-2009

15:05

Not Applicable

X86_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6001.22434_none_a0074809cb8a263e.manifest

Not Applicable

11,403

15-May-2009

16:49

Not Applicable

X86_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6002.22137_none_a1f0bacfc8adc767.manifest

Not Applicable

11,403

15-May-2009

16:48

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Amd64_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6001.22434_none_fc25e38d83e79774.manifest

Not Applicable

11,419

15-May-2009

16:49

Not Applicable

Amd64_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6002.22137_none_fe0f5653810b389d.manifest

Not Applicable

11,419

15-May-2009

16:47

Not Applicable

Package_for_kb961435_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,375

18-May-2009

15:05

Not Applicable

Package_for_kb961435_client_2~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,705

18-May-2009

15:05

Not Applicable

Package_for_kb961435_client~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,723

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,429

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,702

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,711

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,433

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,706

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,723

18-May-2009

15:05

Not Applicable

X86_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6001.22434_none_a0074809cb8a263e.manifest

Not Applicable

11,403

15-May-2009

16:49

Not Applicable

X86_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6002.22137_none_a1f0bacfc8adc767.manifest

Not Applicable

11,403

15-May-2009

16:48

Not Applicable

Additional files for all supported Itanium-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Ia64_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6001.22434_none_a008ebffcb882f3a.manifest

Not Applicable

11,411

15-May-2009

16:39

Not Applicable

Ia64_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6002.22137_none_a1f25ec5c8abd063.manifest

Not Applicable

11,411

15-May-2009

16:30

Not Applicable

Package_for_kb961435_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,425

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc_1~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,529

18-May-2009

15:05

Not Applicable

Package_for_kb961435_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,706

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,429

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server_1~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,533

18-May-2009

15:05

Not Applicable

Package_for_kb961435_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,717

18-May-2009

15:05

Not Applicable

X86_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6001.22434_none_a0074809cb8a263e.manifest

Not Applicable

11,403

15-May-2009

16:49

Not Applicable

X86_microsoft-windows-wmiperf_31bf3856ad364e35_6.0.6002.22137_none_a1f0bacfc8adc767.manifest

Not Applicable

11,403

15-May-2009

16:48

Not Applicable

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