Phase-Based Low Power Management Combining CPU and GPU for Android Smartphones

Smartphones have limited battery capacity, so efficient power management is required for high-performance applications and to increase usage time. In recent years, efficient power management of smartphones has become very important as the demand for power use of smartphones has grown due to deep lea...

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Bibliographic Details
Published inElectronics (Basel) Vol. 11; no. 16; p. 2480
Main Authors Ohk, Seung-Ryeol, Kim, YongSin, Kim, Young-Jin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2022
Subjects
Analysis
Augmented reality
Central processing units
Computer & video games
CPUs
Design
Energy management systems
Energy use
Galaxies
Governors
Graphics processing units
Linux
Machine learning
Operating systems
Power consumption
Power management
Quality of service
Reduction
Smart phones
Smartphones
Virtual reality
South Korea
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Summary:Smartphones have limited battery capacity, so efficient power management is required for high-performance applications and to increase usage time. In recent years, efficient power management of smartphones has become very important as the demand for power use of smartphones has grown due to deep learning, games, virtual reality, and augmented reality applications. Existing low-power techniques of smartphones focus only on lowering power consumption without considering actual power consumption based on utilization of the central processing unit (CPU) and graphics processing unit (GPU), which are major components of smartphones. In addition, they do not take into consideration the strict use of resources within the component and what instructions are being processed to operate them. In this paper, we propose a low-power technique that manages power by calculating the actual power consumption of smartphones at execution time and classifying the detailed resource operating states of CPUs and GPUs. The proposed technique was implemented by linking the kernel and native app on a Galaxy S7 smartphone equipped with Android. In experiments with 15 workloads, the proposed technique achieves an energy reduction of 18.11% compared to the low-power technique of the interactive governor built into the Galaxy S7 with a small FPS reduction of 3.12%.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics11162480