Microsoft KB Archive/923672

= FIX: An obvious delay occurs when a project that is based on Visual C++ 2005 uses a slow I/O device and a fast I/O device at the same time =

Article ID: 923672

Article Last Modified on 12/15/2006

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APPLIES TO


 * Microsoft Visual Studio 2005 Team Foundation
 * Microsoft Visual Studio 2005 Team System Test Edition
 * Microsoft Visual Studio 2005 Team Edition for Software Architects
 * Microsoft Visual Studio 2005 Team Edition for Software Developers
 * Microsoft Visual Studio 2005 Team Edition for Software Testers
 * Microsoft Visual Studio 2005 Team Foundation Server
 * Microsoft Visual Studio 2005 Standard Edition
 * Microsoft Visual Studio 2005 Professional Edition
 * Microsoft Visual Studio 2005 Express Edition

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SYMPTOMS
In a project that is based on Microsoft Visual C++ 2005, an obvious delay occurs when the project uses a slow I/O device and a fast I/O device at the same time.

Note An example of a slow I/O device is a floppy disk. An example of a fast I/O device is a hard disk.



CAUSE
This problem occurs because of the excess protection from the Visual C++ runtime. If you open multiple files on different I/O devices, the Visual C++ runtime must acquire some critical sections to make sure that the shared resources are correctly serialized.

Note Critical sections are a kind of mechanism that prohibits more than one thread from running a particular section of code at a time.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Visual Studio 2005. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

929697 How to obtain the latest Visual Studio 2005 service pack

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 2005 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:

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites
You must have Visual Studio 2005 installed to apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes that are installed on the computer.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

File information
The English 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.

Visual Studio 2005, x64-based versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Visual Studio 2005 Service Pack 1.



MORE INFORMATION
For more information, 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

Keywords: kbhotfixserver kbqfe kbpubtypekc KB923672

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