光纤通道交换网络接口卡的零拷贝技术研究与实现  

Research and Implantation of Technology of Zero Copy Based on Token-routing Fibre Channel Switch Network Interface Card

作　　者：许伟[1] 冯萍[1] 郭海山[1] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072

出　　处：《计算机测量与控制》2008年第3期366-369,共4页Computer Measurement &Control

基　　金：国家"863"计划资助项目(2003AA001018);航空基金资助项目(02F53031)

摘　　要：介绍了信令寻径式光纤通道交换网的特点,为了提高光纤通道交换网络接口卡的通信性能,通过地址管理表的内存映射实现在用户空间实现虚实地址转换,实现用户数据从用户空间到网络接口卡(NIC)的零拷贝,因此大大提高了NIC的通信速度,优化了其体系结构;并将其成功应用于中尺度数值天气预报的MM5模式中,为各级气象部门提供准确、高效的数值预报服务;测试结果表明,零拷贝技术能够使网络接口卡性能有较大提高,达到了设计目的。The characteristic of token-routing fibre channel switch network is discussed in the thesis.For improving network interface card＇s communications performance,the implementation of virtual-physical address translation is reatized in the user＇s space through the memory mapped of address manage table,and the communications data＇s zero copy is realized from the user＇s space to the network interface card（NIC）.So it could improve the communication speed of network interface card and optimize its structure of it.Aslo it was successfully used in ＂Middle Range Numerical Meteorological Predict Mode（MM5）＂,and provided accurate and high performance numerical predict for all meteorological deparment.It indicates that the technology of zero copy can improve communication performance of the NIC through the result of test,and achieve the design aim.

关 键 词：信令寻径式光纤通道交换网 网络接口卡 零拷贝 虚实地址转换 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]