FIX: You may experience high CPU usage on a Windows CE 5.0-based device when an application reads a large file or when an application writes a large file (916578)

RESOLUTION

Software update information

A supported software update is now available from Microsoft as Windows CE 5.0 Core OS QFE 916578. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:

Prerequisites

This update is supported only if all previous updates for this product are also installed.

Restart requirement

After you install this update, you must perform a clean build of the whole platform. To clean the platform, click Clean on the Build menu. To build the platform, click Build Platform on the Build menu. You do not have to restart the computer after you apply this update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this package has the file attributes (or later file attributes) that are listed in the following table.

File name	File size	Date	Time
Wincepb50-060323-kb916578-armv4i.msi	1,277,440	24-Mar-2006	18:21
Wincepb50-060323-kb916578-mipsii.msi	1,324,544	24-Mar-2006	18:21
Wincepb50-060323-kb916578-mipsii_fp.msi	1,325,056	24-Mar-2006	18:21
Wincepb50-060323-kb916578-mipsiv.msi	1,340,416	24-Mar-2006	18:21
Wincepb50-060323-kb916578-mipsiv_fp.msi	1,341,440	24-Mar-2006	18:21
Wincepb50-060323-kb916578-sh4.msi	1,252,864	24-Mar-2006	18:21
Wincepb50-060323-kb916578-x86.msi	1,179,648	24-Mar-2006	18:21

The English version of this update 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 name	File size	Date	Time	Path
Fatfsd.lib	604,882	21-Mar-2006	01:12	public\common\oak\lib\armv4i\debug
Tfat.lib	701,472	21-Mar-2006	01:12	public\common\oak\lib\armv4i\debug
Fatfsd.lib	321,250	21-Mar-2006	01:12	public\common\oak\lib\armv4i\retail
Tfat.lib	359,704	21-Mar-2006	01:12	public\common\oak\lib\armv4i\retail
Fatfsd.lib	608,558	21-Mar-2006	01:13	public\common\oak\lib\mipsii\debug
Tfat.lib	702,398	21-Mar-2006	01:13	public\common\oak\lib\mipsii\debug
Fatfsd.lib	325,656	21-Mar-2006	01:12	public\common\oak\lib\mipsii\retail
Tfat.lib	363,934	21-Mar-2006	01:12	public\common\oak\lib\mipsii\retail
Fatfsd.lib	608,694	21-Mar-2006	01:13	public\common\oak\lib\mipsii_fp\debug
Tfat.lib	702,538	21-Mar-2006	01:13	public\common\oak\lib\mipsii_fp\debug
Fatfsd.lib	325,782	21-Mar-2006	01:13	public\common\oak\lib\mipsii_fp\retail
Tfat.lib	364,022	21-Mar-2006	01:13	public\common\oak\lib\mipsii_fp\retail
Fatfsd.lib	618,386	21-Mar-2006	01:14	public\common\oak\lib\mipsiv\debug
Tfat.lib	714,534	21-Mar-2006	01:14	public\common\oak\lib\mipsiv\debug
Fatfsd.lib	329,494	21-Mar-2006	01:13	public\common\oak\lib\mipsiv\retail
Tfat.lib	368,450	21-Mar-2006	01:13	public\common\oak\lib\mipsiv\retail
Fatfsd.lib	618,522	21-Mar-2006	01:14	public\common\oak\lib\mipsiv_fp\debug
Tfat.lib	714,674	21-Mar-2006	01:14	public\common\oak\lib\mipsiv_fp\debug
Fatfsd.lib	329,620	21-Mar-2006	01:14	public\common\oak\lib\mipsiv_fp\retail
Tfat.lib	368,530	21-Mar-2006	01:14	public\common\oak\lib\mipsiv_fp\retail
Fatfsd.lib	519,522	21-Mar-2006	01:12	public\common\oak\lib\sh4\debug
Tfat.lib	599,806	21-Mar-2006	01:12	public\common\oak\lib\sh4\debug
Fatfsd.lib	297,330	21-Mar-2006	01:11	public\common\oak\lib\sh4\retail
Tfat.lib	331,076	21-Mar-2006	01:10	public\common\oak\lib\sh4\retail
Fatfsd.lib	507,582	21-Mar-2006	01:10	public\common\oak\lib\x86\debug
Tfat.lib	586,052	21-Mar-2006	01:10	public\common\oak\lib\x86\debug
Fatfsd.lib	286,998	21-Mar-2006	01:10	public\common\oak\lib\x86\retail
Tfat.lib	319,992	21-Mar-2006	01:10	public\common\oak\lib\x86\retail