一种基于模块的调度策略  

A Module Based Scheduling Policy

作　　者：张晔[1] 李曦[1] 唐玲[2] 陈香兰[1] 龚育昌[1] 

机构地区：[1]中国科学技术大学计算机科学与技术系,安徽合肥230027 [2]华东政法大学,上海201620

出　　处：《电子学报》2009年第11期2380-2388,共9页Acta Electronica Sinica

基　　金：电子信息产业发展基金(财建[2008]329工信部运[2008]97);安徽省自然科学基金(No.070412030);上海市优季表年教师科研专项基金(No.hzf-07013)

摘　　要：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.Cache miss affects efficiency of computer system seriously.Modulization is very high in modem 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.

关 键 词：高速缓存 构件 调度策略 调度段 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]