基于龙芯的软件层动态变频研究与实现  

Research and Implementation of Software Layer Dynamic Frequency Scaling Based on Loongson

作　　者：顾丽红[1] 林志强[1] 吴少刚[2] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东东营257061 [2]中国科学院计算技术研究所,北京100190

出　　处：《计算机工程》2011年第9期41-43,共3页Computer Engineering

基　　金："核高基"重大专项(2009ZX01029-001-003);国家"863"计划基金资助项目(2006AA010201);江苏省科技成果转化基金资助项目(BA2004029)

摘　　要：龙芯2F处理器提供了软件变频的寄存器接口。为使基于龙芯处理器的计算机功耗更低,利用Linux内核已有的CPUFreq驱动框架,编写针对龙芯2F处理器的CPUFreq驱动代码,实现处理器的动态变频。通过对CPUFreq的节能和性能的测试实验,结果表明CPUFreq的OnDemand调控策略具备较好的综合效果。Loongson 2F processor provides a register for software to scale the frequency.For producing lower power consumption of Loongson computer,this paper uses CPUFreq driver framework in Linux kernel,writes driver code of CPUFreq for Loongson 2F processor,and realizes the dynamic frequency scaling of 2F processor.An experiment to measure the power saving and performance of CPUFreq is done.Experimental results show that OnDemand adjusting strategy of CPUFreq provides better synthesized effect.

关 键 词：龙芯2F 动态变频 时钟 CPUFreq子系统 调控策略 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]