CAJ | 학술논문

为了适应高速网络环境对网络行为分析系统提出的高吞吐量、低时延的要求,并提高系统处理高速数据流的实时性,提出了一种改进型的零拷贝技术.在网络行为分析系统的设计中可在使用DMA和内存映射的基础上应用零拷贝技术,并根据系统的需求对零拷贝技术做出优化,使用专用内存区域来存储网络数据包,并修改Linux操作系统对网络数据包的分配和释放方式.测试结果表明,使用改进后的零拷贝技术的系统吞吐量有明显的提高.
위료괄응고속망락배경대망락행위분석계통제출적고탄토량、저시연적요구,병제고계통처리고속수거류적실시성,제출료일충개진형적령고패기술.재망락행위분석계통적설계중가재사용DMA화내존영사적기출상응용령고패기술,병근거계통적수구대령고패기술주출우화,사용전용내존구역래존저망락수거포,병수개Linux조작계통대망락수거포적분배화석방방식.측시결과표명,사용개진후적령고패기술적계통탄토량유명현적제고.
High speed network nowadays which works in gigabit requests network behavior analysis system performance in high throughput and low latency, to meet these requests, an improved zero-copy technique is presented. During the development time, network behavior analysis system not only apply zero-copy technique on the basis of DMA and memory map, but also make some suitable modifications in zero-copy according to the requests from system. These modifications include using private memory region to storage network packets, modifying the modes of Linux operation system to allocate and free the memory of network packets. Experimental result shows that the throughput of system is improved significantly using the modified zero-copy technique.