A Practical Dynamic Frequency Scaling Solution to DPM in Embedded Linux Systems
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| Title | A Practical Dynamic Frequency Scaling Solution to DPM in Embedded Linux Systems |
| Authors | |
| Abstract | Traditional power management enables CPU to switch among different power consumption modes such as running, idle and standby to save energy to a certain degree. In battery-powered embedded Linux systems, power management plays an even more important role than in desktops. This paper proposes a practical solution to dynamic power management (DPM) based on dynamic frequency scaling (DFS). According to the system workload, it switches the working frequency among several predefined settings. This paper presents a design and implementation of the solution in an embedded Linux system. Experimental results on an Intel PXA250-based system have demonstrated that the system running a DPM-enabled Linux can save up to 44% of execution time with less than 8% extra power consumption in an email application. |
| Publisher | ACADEMY PUBLISHER |
| Date | 2009-08-01 |
| Source | Journal of Computers Vol 4, No 8 (2009): Special Issue: Trends in Hybrid Intelligent Systems |
| Rights | Copyright © ACADEMY PUBLISHER - All Rights Reserved.To request permission, please check out URL: http://www.academypublisher.com/copyrightpermission.html. |