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。
关键词:
龙芯2F,
动态变频,
时钟,
CPUFreq子系统,
调控策略
Abstract: 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.
Key words:
Loongson 2F,
dynamic frequency scaling,
clock,
CPUFreq subsystem,
adjusting strategy
中图分类号:
顾丽红, 林志强, 吴少刚. 基于龙芯的软件层动态变频研究与实现[J]. 计算机工程, 2011, 37(9): 41-43.
GU Li-Gong, LIN Zhi-Jiang, TUN Shao-Gang. Research and Implementation of Software Layer Dynamic Frequency Scaling Based on Loongson[J]. Computer Engineering, 2011, 37(9): 41-43.