SYMPTOMS
Consider the following scenario. You run a custom Winsock network program that uses the
Winsock Select function. You run this program on a Microsoft Windows Server 2003-based multiprocessor computer. In this scenario, the following error code is returned:
WSAENOBUFS (10055)
Note This error code translates to the following:
An operation on a socket cannot be performed because the system lacks sufficient buffer space or because a queue is full.
Additionally, System Monitor displays a steady increase in non-paged pool memory usage. When you run the Memsnap.exe tool or use the Memory Pool Monitor utility, you discover that the AfdP tag causes this increase in non-paged pool memory usage.
Also, when this behavior occurs, the following event may be logged in the System logs:Event ID 2019
Description: The server was unable to allocate from the system nonpaged pool because the pool was empty. Using Poolmon to analyze this will show the pooltag AFDB to be consuming high amounts of Non page Pool.
RESOLUTION
Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it 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 Windows Server 2003 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product 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.
Prerequisites
You must have Windows Server 2003 Service Pack 1 (SP1) installed on your computer.
Restart requirement
You must restart your computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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.Windows Server 2003 Itanium-based version
|
| Afd.sys | 5.2.3790.2667 | 583,168 | 23-Mar-2006 | 14:23 | IA-64 |
Windows Server 2003 x64-based version
|
| Afd.sys | 5.2.3790.2667 | 299,008 | 23-Mar-2006 | 14:23 | x64 |
Windows Server 2003 x86-based version
|
| Afd.sys | 5.2.3790.2667 | 152,064 | 24-Mar-2006 | 02:31 | x86 |