用户层通信接口VIA的研究(一)  

Study of User-Level Communication Interfaces VIA(1)

作　　者：孙伟平[1] 周敬利[1] 余胜生[1] 

机构地区：[1]华中科技大学计算机学院外存储国家专业实验室,武汉430074

出　　处：《计算机科学》2003年第11期125-128,共4页Computer Science

基　　金：国防预研基金413160502;华中科技大学博士后专项基金

摘　　要：1.介绍 随着物理硬件的飞速发展,网络软件越来越成为影响网络性能的重要因素.两者之间的差异主要来源于软件在处理每个消息(message)时的开销过大.Distributed applications requires fast and reliable exchange of information across a network. Traditional network architectures do not provide the performance required by these applications,due to communication overhead incurred by messages to move through different layers of the TCP/IP stack in onperating system. VIA defines mechanisms that will bypass the intervention of the operating system layers and avoid excess data copying during sending and receiving of packets. This effectively reduces latency and lowers the impact on bandwidth. The architecture of VIA and its mechanisms are discussed and the advantage and disadvantage of VIA are analyzed.

关 键 词：VIA 用户层通信 接口 TCP/IP 

分 类 号：TP303[自动化与计算机技术—计算机系统结构] TP332[自动化与计算机技术—计算机科学与技术]