Linux温度感知的调度器研究与实现  

Design and Implementation of Linux Thermal-aware Scheduler

作　　者：夏亮[1] 祝永新[1] 

机构地区：[1]上海交通大学微电子学院

出　　处：《微型电脑应用》2009年第2期21-24,5,共4页Microcomputer Applications

基　　金：上海市浦江人才计划基金资项目(07pj14061)

摘　　要：针对处理器的温度管理问题,在操作系统层次上提出一种轮转调度算法,改进基于门限温度的调度算法,并在Linux内核中实现了这两个算法。将SPEC2K进行分类并组合成不同冷热特性的负载,在Intel双核处理器下进行了测试。表明Linux基准调度程序在调度方面缺乏有效的温度管理。基于门限温度的调度算法把热的任务迁移到冷的处理器上,缓解了处理器的温度过高问题。轮转调度算法有规律地让任务在双核上执行相等的时间,更好地平衡了处理器的温度,并且系统的吞吐量不受影响。To the issue of temperature management on microprocessor,a round robin scheduling algorithm as well as an improved threshold-based algorithm at OS level are proposed and implemented in Linux Kernel.SPEC2K benchmarks are classified and combined into different kinds of workload according to their thermal behavior and are tested on an Intel dual core processor.The results show that Linux baseline scheduler lacks effective thermal management in scheduling.Threshold-based scheduling algorithm migrates hot tasks to cool cores so as to alleviate peak temperature on processor.Round robin algorithm regularly rotates tasks to each core for equal amount of time,therefore,it balances temperature between cores more effectively.Moreover, it has little impact on throughput.

关 键 词：轮转调度 任务迁移 温度感知 多核 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]