Turducken: Hierarchical Power Management for Mobile Devices

Third International Conference on Mobile Systems, Applications, and Services

Jacob Sorber Nilanjan Banerjee Mark D. Corner Sami Rollins

Others  :  http://www.usenix.org/publications/library/proceedings/mobisys05/tech/full_papers/sorber/sorber.pdf
PID  :  8891

来源: CEUR

【 摘 要 】

Maintaining optimal consistency in a distributed system requiresthat nodes be always-on to synchronize information. Unfortunately,mobile devices such as laptops do not have adequatebattery capacity for constant processing and communication.Even by powering off unnecessary components, such asthe screen and disk, current laptops only have a lifetime of afew hours. Although PDAs and sensors are similarly limited inlifetime, a PDA’s power requirement is an order-of-magnitudesmaller than a laptop’s, and a sensor’s is an order-of-magnitudesmaller than a PDA’s. By combining these diverse platformsinto a single integrated laptop, we can reduce the power costof always-on operation. This paper presents the design, implementation,and evaluation of Turducken, a Hierarchical PowerManagement architecture for mobile systems. We focus on aparticular instantiation of HPM, which provides high levels ofconsistency in a laptop by integrating two additional low powerprocessors. We demonstrate that a Turducken system can providebattery lifetimes of up to ten times that of a standard laptopfor always-on operation and three times for a system that periodicallysleeps.