FIX: Performance of testing decreases after several hours when you run load tests by using team system load testing tools in Microsoft Visual Studio 2008 TFS


When you run load tests by using team system load testing tools in Microsoft Visual Studio 2008 Team Foundation Server (TFS), the performance of testing decreases after several hours. The CPU utilization on the data tier server may stay at 100 percent. Additionally, the query times for work item-related operations increase significantly.

This problem occurs when the following conditions are true:
  • The load tests include the Version Control service and the Workitem Tracking service.
  • A high volume of commands is sent to the TFS server.


Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Visual Studio 2008 Team Foundation Server service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


You must have Microsoft Visual Studio 2008 Team Foundation Server Service Pack 1 installed to apply this hotfix.

Restart requirement

You do not have to 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.
File nameFile versionFile sizeDateTimePlatform
Microsoft.teamfoundation.c lient.dll9.0.30729.4068278,52804-Mar- 200920:19x86
Microsoft.teamfoundation.client.resources.d ll9.0.30729.406845,05604-Mar- 200920:19x86
Microsoft.teamfoundation.client.resources.d ll9.0.30729.406849,15204-Mar- 200920:19x86
Microsoft.teamfoundation.common.dll9.0.30729.4068286,72004-Mar- 200920:19x86
Microsoft.teamfoundation.common.resources.d ll9.0.30729.406836,86404-Mar- 200920:19x86
Microsoft.teamfoundation.common.resources.d ll9.0.30729.406840,96004-Mar- 200920:19x86
Microsoft.teamfoundation.common.resources.d ll9.0.30729.40684,60804-Mar- 200920:19x86
Microsoft.teamfoundation.databaseinstaller. dll9.0.30729.40684,399,10404-Mar- 200920:19x86
Microsoft.teamfoundation.databaseinstaller. resources.dll9.0.30729.406813,31204-Mar- 200920:19x86
Microsoft.teamfoundation.dll9.0.30 729.40681,060,86404-Mar- 200920:19x86
Microsoft.teamfoundation.resources.dll9.0.30729.4068286,72004-Mar- 200920:19x86
Microsoft.teamfoundation.resources.dll9.0.30729.4068315,39204-Mar- 200920:19x86
Microsoft.teamfoundation.resources.dll9.0.30729.4068319,48804-Mar- 200920:19x86
Microsoft.teamfoundation.resources.dll9.0.30729.4068323,58404-Mar- 200920:19x86
Microsoft.teamfoundation.server.admin.dll9.0.30729.4068163,84004-Mar- 200920:19x86 mon.integration.dll9.0.30729.406832,76804-Mar- 200920:19x86 mon.integration.resources.dll9.0.30729.40684,09604-Mar- 200920:19x86 mon.integration.resources.dll9.0.30729.40684,60804-Mar- 200920:19x86
Tfsadminutil.exe9.0.30729.406867,41604-Mar- 200920:19x86
Tfsadminutil.resources.dll9.0.3072 9.406824,57604-Mar- 200920:19x86
Tfsadminutil.resources.dll9.0.3072 9.406828,67204-Mar- 200920:19x86
Tfsadminutil.resources.dll9.0.3072 9.406836,86404-Mar-200920:19x86


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 how to check how many users your TFS server can support, visit the following Web site: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