基于频率时效感知的混合内存写冷热页面调度  

A Hybrid Memory Writing Cold and Hot Page Scheduling Based on Frequency Time Interval

作　　者：刘兵 汪令辉[3] 张涛 陈友良[4] LIU Bing;WANG Linghui;ZHANG Tao;CHEN Youliang(School of Computer Science and Technology,University of Science and Technology of China,Heifei 230027,China;Department of Information Engineering,Tongling Vocational and Technical College,Tongling Anhui 244061,China;Tongling Nonferrous Metals Group Co.,Ltd.,Tongling Anhui 244000,China;China Academy of Safety and Science&Technology,Beijing 100012,China)

机构地区：[1]中国科技大学计算机科学与技术学院,安徽合肥230027 [2]铜陵职业技术学院信息工程系,安徽铜陵244061 [3]铜陵有色金属集团公司,安徽铜陵244000 [4]中国安全生产科学研究院,北京100012

出　　处：《湖南工业大学学报》2021年第3期74-79,共6页Journal of Hunan University of Technology

基　　金：安徽省高校自然科学研究基金资助重点项目(KJ2020A0971);安徽省高校质量工程基金资助项目(2018mooc222,2018mooc230)。

摘　　要：为了提高相变存储器和DRAM所组成混合内存中PCM的耐久性,减少页面在PCM上的写操作,通过一个新公式结合写访问频率的统计和最近写访问间隔对页面写冷热的影响,计算频率时效的写权值,并根据最近写频率和计算的频率时效权值来进行混合内存页面冷热页的调度。通过仿真分析比较,这种方法可以减少PCM页面的写次数。In view of an improvement of the durability of PCM in the hybrid memory composed of PCM and DRAM,as well as a reduction of the page writing operation on PCM,a new formula is used to calculate the write weight value of frequency aging with the statistics of the write access frequency and the influence of the latest write access interval on the page writing heat and cold combined together,followed by a calculation of the hot and cold pages of the hybrid memory according to the latest write frequency and the calculated frequency aging weight.Based on the simulation analysis and comparison,it is verified that this proposed method helps reduce the number of PCM page writing.

关 键 词：非易失存储器 相变存储 混合内存 页面写预测 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]