基于零拷贝技术的千兆网络性能优化研究

Research on Performance and Optimization of Gigabit network based on Zero-Copy technology

在基于千兆以太网的应用系统中,核心系统和应用程序间的内存拷贝是额外的系统开销,是影响处理速度的关键因素之一。本文分析了在千兆速率下影响传输性能的可能存在的几个因素,着重比较了几种现有的零拷贝技术,采用了RDMA技术构建了零拷贝千兆网络,验证了RDMA技术可以有效的解决千兆网络的传输瓶颈。

Among the application systems based on Gigabit Ethernet,memory copy is an additional system overhead between the core system and the application program,which is also one of the key factors impacting on processing speed. In order to optimize the communications network,this paper analyzes the factors that affect the transmission performance at Gigabit rate. It places emphasis on comparing several existing Zero-Copy technologies. With RDMA technology,Gigabit network is designed in the transmission envi-ronment. At last,this system effectively solved the transmission bottleneck in Gigabit network with RDMA technology.