CAJ | 학술논문

Cache的缺失严重影响着计算机系统的运行效率.现代构件化软件架构中模块化程度越来越高,操作系统中传统的调度策略忽视任务的模块特性,若模块具有特定的代码/数据访问集合,模块间不合理的任务调度会导致严重的Cache缺失.本文提出了一种基于模块的调度策略MBS,可以尽量连续调度同一模块中的任务,尤其适应于构件化的服务系统.分析与实验结果表明,MBS可以有效减少此类系统的Cache缺失,明显提高系统性能.
Cache적결실엄중영향착계산궤계통적운행효솔.현대구건화연건가구중모괴화정도월래월고,조작계통중전통적조도책략홀시임무적모괴특성,약모괴구유특정적대마/수거방문집합,모괴간불합리적임무조도회도치엄중적Cache결실.본문제출료일충기우모괴적조도책략MBS,가이진량련속조도동일모괴중적임무,우기괄응우구건화적복무계통.분석여실험결과표명,MBS가이유효감소차류계통적Cache결실,명현제고계통성능.
Cache miss affects efficiency of computer system seriously. Modulization is very high in modern component based software architecture.The traditional scheduling policy in operation system neglects the modularity of tasks. It leads severe cache miss because of unreasonable task scheduling among modules if each module has a specific code or data set.This paper presents a module based scheduling policy-MBS.The policy tries its best to continuously schedule tasks which run in a same module.It is especially suitable to component based serving system. The analysis and experiment results show that MBS policy can effectively reduce cache miss and considerably improve system performance.