基于多核处理器的TCP/IP协议栈加速技术  

TCP/IP Stack Acceleration Technology Based on Multi-core Processor

作　　者：査奇文 张武[2] 曾学文[2] 宋毅[1,2] 

机构地区：[1]中国科学院研究生院,北京100190 [2]中国科学院声学研究所 国家网络新媒体工程技术研究中心,北京100190

出　　处：《网络新媒体技术》2013年第1期58-64,共7页Network New Media Technology

基　　金：863课题:融合网络业务体系的开发(课题编号:2011AA01A102);中国科学院战略性先导科技专项子课题:未来网络架构研究与边缘设备研制(子课题编号:XDA06010302)

摘　　要：多核处理器已经成为了处理器发展的趋势。在多核处理器上运行Linux操作系统时,由于所有的TCP/IP网络协议处理都以软件的形式在Linux操作系统内核运行,处理效率很低。为了解决这个问题,本文提出了一种基于多核处理器的多核TCP/IP加速协议栈,将多核处理器的处理核心分成两部分。一部分运行Linux操作系统。另一部分处理核心运行实时系统,处理TCP/IP协议栈。由于将TCP/IP协议栈的处理卸载到了实时系统,Linux的中断处理大大减少,并且实时系统直接操作底层硬件资源,没有操作系统的参与,所以多核TCP/IP加速协议栈的处理效率会很高。通实验结果对比,在相同的硬件资源下,多核TCP/IP加速协议栈不仅比Linux TCP/IP协议栈获得了更大的网络处理吞吐率,而且消耗了更低的CPU。Multi -core is the trend in the field of processors. When Running Linux on a multi -core processor, all of the network pro- cessing is processed by the kernel of Linux operating system, consuming too much processor resource and the processing efficiency is very poor. To solve this problem, we describe a multi - core TCP/IP acceleration stack in this paper. Our design divides the cores of a multi - core processor into two groups. One group of cores runs Linux operating system, which the network applications running on. The other group of cores processes the TCP/IP stack in a real - time system. Because of the offloading of network processing and fewer interrupts in Linux, and the directly operating the hardware resources without operating system in the real - time system, the multi - core TCP/IP acceleration stack is very efficient. The result of the experiment shows that multi - core TCP/IP acceleration stack can get much higher performance but consumes less CPU resource.

关 键 词：TCP IP协议栈 LINUX操作系统 多核处理器 TCP IP卸载 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]