Dynamic Power Management for Embedded System Idle State in the Presence of Periodic Interrupt Services

• Item type: Trans(1)
• 公開日: 2008-08-27
• タイトル: Dynamic Power Management for Embedded System Idle State in the Presence of Periodic Interrupt Services
• タイトル / 言語: en
• タイトル: Dynamic Power Management for Embedded System Idle State in the Presence of Periodic Interrupt Services
• 言語: eng
• キーワード / 主題Scheme: Other
• キーワード / 主題: System-Level Low-Power Design
• 資源タイプ / 資源タイプ識別子: http://purl.org/coar/resource_type/c_6501
• 資源タイプ: journal article
• 著者所属: Graduate School of Information Science Nagoya University
• 著者所属: Graduate School of Information Science Nagoya University
• 著者所属: Graduate School of Information Science Nagoya University
• 著者所属(英): en
• 著者所属(英): Graduate School of Information Science, Nagoya University
• 著者所属(英): en
• 著者所属(英): Graduate School of Information Science, Nagoya University
• 著者所属(英): en
• 著者所属(英): Graduate School of Information Science, Nagoya University
• 著者名: Gang, Zeng; Hiroyuki, Tomiyama; Hiroaki, Takada
• 著者名(英): Gang, Zeng; Hiroyuki, Tomiyama; Hiroaki, Takada
• 論文抄録 / 内容記述タイプ: Other
• 論文抄録 / 内容記述: Generally there are periodic interrupt services such as periodic clock tick interrupts in the real-time embedded systems even though the system is in the idle state. To minimize the power consumption of idle state power management therefore should consider the effect of periodic interrupt services. In this paper we deal with this issue in two different cases. In case the periodic interrupt cannot be disabled we formulate the power consumption of idle state and propose static and dynamic approaches for the optimal frequency selection to save idle power. On the other hand in case the periodic interrupt can be disabled we propose the configurable clock tick to disable the interrupt service until the next task is released so that the processor can stay in the low power mode for longer time. The proposed approaches are implemented in a real-time OS; and its efficiency has been validated by theoretical calculations and actually measurements on an embedded processor.
• 論文抄録(英) / 内容記述タイプ: Other
• 論文抄録(英) / 内容記述: Generally, there are periodic interrupt services such as periodic clock tick interrupts in the real-time embedded systems even though the system is in the idle state. To minimize the power consumption of idle state, power management therefore should consider the effect of periodic interrupt services. In this paper, we deal with this issue in two different cases. In case the periodic interrupt cannot be disabled, we formulate the power consumption of idle state, and propose static and dynamic approaches for the optimal frequency selection to save idle power. On the other hand, in case the periodic interrupt can be disabled, we propose the configurable clock tick to disable the interrupt service until the next task is released so that the processor can stay in the low power mode for longer time. The proposed approaches are implemented in a real-time OS; and its efficiency has been validated by theoretical calculations and actually measurements on an embedded processor.
• 書誌レコードID / 収録物識別子タイプ: NCID
• 書誌レコードID / 収録物識別子: AA12394951
• 書誌情報: IPSJ Transactions on System LSI Design Methodology （TSLDM）; 巻 1, p. 48-57, 発行日 2008-08-27
• ISSN / 収録物識別子タイプ: ISSN
• ISSN / 収録物識別子: 1882-6687
• 出版者 / 言語: ja
• 出版者: 情報処理学会