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Compensating for moderate effective throughput at the desktop

机译：补偿台式机的适度有效吞吐量

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This article presents the design and development of a networking system architecture targeted to support high-speed TCP/IP communication over ATM. The discussed architecture has been developed in the form of an integrated system which incorporates state-of-the-art software and hardware subsystems, and an OC-12c ATM adapter (622 Mb/s). Moreover, the design of this embedded system has been based on the Chorus real-time operating system, which, in turn, hosts an accelerated TCP/IP protocol stack over ATM. Furthermore, the embedded system board has been developed according to the PCI specification to easily be plugged into a host platform. In addition, the OC-12c ATM adapter subsystem has been designed and developed in order to also be plugged into the same host. The developed architecture has proven very efficient and reliable, providing high-throughput and low-latency bulk data communications. The measured performance on an OC-3c-based (155 Mb/s) testbed has shown that an optimally implemented TCP/IP stack, hosted by a real-time kernel and coupled with an ATM adapter, offers a robust desktop platform for high-speed end-to-end communications. The main feature of the accelerated TCP/IP protocol stack is the out-of-band processing of control and data information. The protocol accelerator embedded system processes the TCP/IP headers and accomplishes checksum computations, while data is transferred from the host's user memory space directly to the network. Finally, for validation purposes, the prototype system has been incorporated in an existing networking infrastructure targeted to support mass storage applications.
机译：本文介绍了旨在支持通过ATM进行高速TCP / IP通信的网络系统体系结构的设计和开发。所讨论的体系结构已以集成系统的形式开发，该集成系统包含最新的软件和硬件子系统以及OC-12c ATM适配器（622 Mb / s）。此外，该嵌入式系统的设计基于Chorus实时操作系统，该实时操作系统又通过ATM托管了加速的TCP / IP协议栈。此外，嵌入式系统板已根据PCI规范进行了开发，可轻松插入主机平台。此外，还设计和开发了OC-12c ATM适配器子系统，以便也可以插入同一主机中。事实证明，开发的体系结构非常有效且可靠，可提供高吞吐量和低延迟的批量数据通信。在基于OC-3c的测试台（155 Mb / s）上测得的性能表明，由实时内核托管并与ATM适配器配合使用的最佳实现的TCP / IP堆栈可提供强大的桌面平台，以实现更高的性能。加快端到端通信。加速的TCP / IP协议栈的主要特征是控制和数据信息的带外处理。协议加速器嵌入式系统处理TCP / IP标头并完成校验和计算，同时将数据从主机的用户存储空间直接传输到网络。最后，出于验证目的，原型系统已合并到旨在支持大容量存储应用程序的现有网络基础架构中。

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