TCP Chimney

The goal of TCP Chimney is to reduce CPU utilization and increase network throughput for long-lived TCP connections with bulk transfers and applications that pre-post buffers. Moving TCP processing tasks to hardware frees up the server's CPU for other application tasks.

On This Page

Windows Server 2008 Resources
Windows Server 2003 Resources
Developer Resources

Windows Server 2008 Resources

• New Networking Features in Windows Server 2008 and Windows Vista
  This article provides an overview of features in Windows Server 2008, including TCP Chimney Offload, RSS, header-data split services, IPsec Task Offload version 2, and NetDMA.
• Information about TCP Chimney, Receive-Side Scaling and Network Direct Memory Access in Windows Sever 2008
  This article describes the TCP Chimney Offload, Receive-Side Scaling (RSS), and Network Direct Memory Access (NetDMA) features that are available for the TCP/IP protocol in Windows Server 2008.
• Netsh commands for Interface Transmission Control Protocol
  This reference topic provides details about the commands in the TCP context.

Windows Server 2003 Resources

• The Microsoft Windows Server 2003 Scalable Networking Pack
  This articles describes the High-Speed Networking (HSN) features in the Windows Server 2003 Scalable Networking Pack.
• Introduction to the Windows Server 2003 Scalable Networking Pack
  This white paper describes the architectural innovations introduced in the Windows Server 2003 Scalable Networking Pack.
• Windows Scalable Networking Initiative
  This white paper is intended for analysts and IT professionals who are interested in stateless and stateful offload technologies like RSS and TCP Chimney.

Developer Resources

• Windows Driver Kit for TCP Chimney
  This Windows Driver Kit topic provides instructions for obtaining NDIS 6.0 TCP Chimney documentation.
• Connection Offload
  This Windows Driver Kit topic points to other information, such as determining a network adapter's connection offload capabilities and enabling and disabling connection offload.

Related Web Sites

Scalable Networking

Troubleshooting Resources

SNP hotfix rollup package for Windows Server 2003 with Service Pack 2