Microsoft KB Archive/830495

= FIX: The RTL8139 network card driver may lose packets during times of high CPU utilization in Windows CE .NET 4.2 =

Article ID: 830495

Article Last Modified on 5/26/2005

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APPLIES TO


 * Microsoft Windows CE .NET 4.2

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SYMPTOMS
The Realtek 8139 (RTL8139) network card driver may lose packets during times of high CPU utilization.



CAUSE
The receiver ring buffer size in the RTL8139 network card driver may be too small to handle bursts of packets.



Software update information
A supported software update is now available from Microsoft as Windows CE 4.2 Core OS QFE 830495. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

Prerequisites
This update is supported only if all previously issued updates for this product have also been 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 your 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) that are listed in the following table.   Date         Time   Version            Size    File name --  23-Oct-2003  00:56  4.21              666,216  Wincepb42-031022-kb830495-armv4.exe 23-Oct-2003 00:57  4.21              666,216  Wincepb42-031022-kb830495-armv4i.exe 23-Oct-2003 00:57  4.21              670,312  Wincepb42-031022-kb830495-mipsii.exe 23-Oct-2003 00:57  4.21              670,312  Wincepb42-031022-kb830495-mipsii_fp.exe 23-Oct-2003 00:57  4.21              670,312  Wincepb42-031022-kb830495-mipsiv.exe 23-Oct-2003 00:57  4.21              670,312  Wincepb42-031022-kb830495-mipsiv_fp.exe 23-Oct-2003 00:56  4.21              649,832  Wincepb42-031022-kb830495-sh3.exe 23-Oct-2003 00:56  4.21              649,832  Wincepb42-031022-kb830495-sh4.exe 23-Oct-2003 00:56  4.21              645,736  Wincepb42-031022-kb830495-x86.exe 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 tool in Control Panel.   Date         Time                      Size    File name --

Path: Public\Common\Oak\Lib\Armv4\Debug 09-Oct-2003 22:29                    229,116  Rtl8139.lib 09-Oct-2003 22:29                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Armv4\Retail 09-Oct-2003 22:29                    181,818  Rtl8139.lib 09-Oct-2003 22:29                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Armv4i\Debug 09-Oct-2003 22:29                    229,476  Rtl8139.lib 09-Oct-2003 22:29                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Armv4i\Retail 09-Oct-2003 22:29                    182,086  Rtl8139.lib 09-Oct-2003 22:29                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsii\Debug 09-Oct-2003 22:30                    228,190  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsii\Retail 09-Oct-2003 22:30                    183,144  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsii_fp\Debug 09-Oct-2003 22:30                    228,272  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsii_fp\Retail 09-Oct-2003 22:30                    183,192  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsiv\Debug 09-Oct-2003 22:30                    229,634  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsiv\Retail 09-Oct-2003 22:30                    184,008  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsiv_fp\Debug 09-Oct-2003 22:30                    229,716  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Mipsiv_fp\Retail 09-Oct-2003 22:30                    184,056  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Sh3\Debug 09-Oct-2003 22:30                    199,102  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Sh3\Retail 09-Oct-2003 22:30                    178,866  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Sh4\Debug 09-Oct-2003 22:30                    198,928  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\Sh4\Retail 09-Oct-2003 22:30                    178,464  Rtl8139.lib 09-Oct-2003 22:30                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\X86\Debug 09-Oct-2003 22:29                    206,074  Rtl8139.lib 09-Oct-2003 22:29                     86,016  Rtl8139.pdb

Path: Public\Common\Oak\Lib\X86\Retail 09-Oct-2003 22:29                    167,616  Rtl8139.lib 09-Oct-2003 22:29                     86,016  Rtl8139.pdb



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
This update increases the size of the receiver ring buffer on the RTL8139 network card driver. The size is increased from 16 kilobytes (KB) to 64 KB.

Keywords: kbbug kbfix kbqfe KB830495

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