摘要
大数据背景下,以计算为中心的系统架构逐渐转向以数据为中心,内存-磁盘模式已不能满足需求。基于非易失性内存设备的优秀特性,设计了非易失性内存卷模式改变传统内存-磁盘模式。热数据频繁访问导致严重访存冲突,降低系统性能。基于此,在非易失性内存卷模式基础上设计了一对多地址映射,通过将热数据备份放置在不同内存通道的非易失性内存上,多核环境中,对于同一块数据的多个访问请求分配到不同数据备份上,实现并行访问,降低系统访问延迟。通过实验在双通道内存架构中实现一对二的映射方式,结果表明这样的设计使得系统性能提升了7.25%。
Under the background of big data, the computing-centric system architecture has gradually shifted to the data-centric, memory-disk model has been unable to meet the demand. Based on the outstanding features of non-volatile memory devices, a non-volatile memory volume mode was designed to change the traditional memory-disk mode. Frequent access to hot data leads to serious memory access conflicts, which reduces system performance. Based on this, a one-to-many address mapping is designed based on the non-volatile memory volume mode. By placing the hot data backup on the non-volatile memory of different memory channels, under the multi-core environment access requests are assigned to different data backups, enabling parallel access and reducing system access latency. Experiments in the dual-channel memory architecture to achieve one-to-two mapping, the results show that this design makes the system performance increased by 7.25%.
作者
钱璐
李弋
吴毅坚
赵文耘
Qian Lu,Li Yi,Wu Yijian,Zhao Wenyun(1.School of Software, Fudan University, Shanghai 201203,China;2.Shanghai Key Laboratory of Data Science, Fudan University, Shanghai 200433, Chin)
出处
《计算机应用与软件》
北大核心
2018年第8期43-49,共7页
Computer Applications and Software
基金
国家高技术研究发展计划项目(2015AA015303)
