FIX: Performance issues may occur when the ClassDesc classFlags member is accessed in a function in the .NET Compact Framework 3.5 in Windows Embedded CE 6.0 R3

When the ClassDesc classFlags member is accessed in a function in the Microsoft .NET Compact Framework 3.5 in Windows Embedded CE 6.0 R3 to check whether a class is invalid, is resolved, or has unresolved statics, cache misses for the L2 data cache and for the Translation Lookaside Buffer (TLB) may occur. These misses may occur hundreds of thousands of times during class resolution and may cause performance issues.

For example, you may experience performance issues when a device calls the EE_ResolveFields function. Because of this issue, the start time of an application may increase significantly from seconds to minutes.

Software update information

A supported software update is now available from Microsoft as Windows Embedded CE 6.0 Monthly Update May 2011. You can fine the package file name in the "File information" section. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is as follows: For example, Wincepb60-110128-kb2492159-armv4i.msi is the ARMV4i Windows Embedded CE 6.0 Platform Builder fix that is documented in article 2492159 in the Microsoft Knowledge Base and is contained in the January 2011 monthly update.

To resolve this problem immediately, download this Windows Embedded CE 6.0 Monthly Update from one of the following Microsoft websites:

Windows Embedded

Microsoft Download Center

Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

• On the Build menu, click Clean Solution, and then click Build Solution.
• On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this software update package 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.

Installer files

Files that are included in this update package

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: