C. S. Ellis, "The Case for Higher-Level Power Management," 7th IEEE Wksp. Hot Topics Op. Sys., Rio Rico, AZ, Mar. 1999.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....is the component of a computer system that has full access to the hardware and global knowledge of the state of the system. This makes it an ideal candidate for hosting power management techniques. The importance of operating system power management has been noted previously in the literature [14, 15, 53]. Research in this area should be directed toward exploiting architectural features that o er power management hooks . Knowing the distribution of the overall power consumption to system subcomponents and the major energy users of the system is important for guiding research on power ....

Ellis, C. S. The Case for Higher Level Power Management. In Proc. of the 7th Workshop on Hot Topics in Operating Systems (HotOS'99) (Mar. 1999).

....such computers lighter and more compact places severe restrictions on battery capacity. There is growing consensus that advances in battery technology and low power circuit design cannot, by themselves, reconcile these opposing constraints the higher levels of the system must also be involved [36, 37]. How does one involve the higher levels of a system in energy management One example is energy aware memory management [26] where the operating system dynamically controls the amount of physical memory that has to be refreshed. Another example is energy aware adaptation [24] where individual ....

C. S. Ellis, "The Case for Higher-Level Power Management," 7th IEEE Wksp. Hot Topics Op. Sys., Rio Rico, AZ, Mar. 1999.

....the node design space. Ranghunathan et al. have also studied energy and other design issues in sensor networks, discussing di erent node alternatives [32] More coarse grained, the Hiker s Buddy work from Duke looked at power aware computing issues for a mobile platform including a PDA and GPS [6]. This, on the other hand, is actually more coarse grained in terms of software and energy consumption than what we wish for ZebraNet. It also is intended for direct human use and so did not consider peer to peer forwarding of position data to a base station archive. Protocol Studies Moving more ....

C. Ellis. The Case for Higher-level Power Management. In Proc. HotOS, Mar. 1999.

.... Problem Early approaches to supporting adaptive mobile systems were mainly concerned with the impact of the variations in network QoS due to the wireless communication links [9, 11, 17] More recent approaches consider other attributes that can become triggers for adaptation, such as power supply [7, 8]. So far all these adaptation mechanisms operate in isolation with little or no concern about their interdependencies, though the requirement for such a concern has been identified in the past [8] Consider the following illustrative scenario: a single application is triggered to adapt by the ....

C. Ellis. The case for higher-level power management. In Proceedings of HotOS'99, 1999.

....have drastically increased over the same time frame. Better low power circuit design techniques have helped to increase battery lifetime [2,3,4] On the other hand, managing power dissipation at higher levels can 2 considerably decrease energy requirements and thus increase battery lifetime [5]. System level dynamic power management [6] decreases the energy consumption by selectively placing idle components into lower power states. System resources can be modelled using state based abstraction where each state trades off performance for power [7] The transitions between states are ....

C. Ellis, "The case for higher-level power management", 7th IEEE Workshop on Hot Topics in Operating Systems, pp.162--167, 1999.

....tasks. Recently, tasks with different power functions have been explored in [13] that work proposes an empirical way to carry out scheduling which takes into consideration the power and criticality of ready tasks. The authors base their experimental results on the measurements obtained from [5], which measures the different power consumptions of tasks in a Palm Pilot Professional. 1.3 Contribution In this paper, we address variable voltage scheduling of periodic real time tasks. Our contribution is to provide an efficient solution for tasks with (potentially) different power ....

C. Ellis. The case for higher-level power management. In IEEE 7th Workshop on Hot Topics in Operating Systems (HotOS-VIII. pp. 162-167, 1999.

....processing power, visualization capabilities, etc. Although the advances in CPU performance is rapid for stationary computers recent work indicate that advances in battery technology and low power circuit design will not alone meet the demands of increasingly complex mobile applications [1]. We can therefore envision a future situation much in agreement with the present situation, characterized by considerable heterogeneity in terms of resource availability for different operating conditions. When designing a multimedia communication system it is hence of utmost importance to ....

C. S. Ellis, "The case for higher-level power management," The 7 th IEEE Workshop on Hot Topics in Operating Systems (HotOS-VII), pp. 162-167, March 1999.

....future ubiquity of mobile computing systems. Reducing power consumption is also a major challenge in the design of mobile systems that extends beyond advances in battery technology and low power circuit design. Energy efficient computer systems have broad environmental and economic implica tions [4, 5, 16]. This position paper focuses on using sensors to leverage physical context and user intent to reduce a system s energy consumption. We illustrate this idea with a case study on managing the display. System level energy management approaches are currently tied almost exclusively to process ....

C. S. Ellis. The Case for Higher-Level Power Management. In Proceedings of the 7th Workshop on Hot Topics in Operating Systems, Rio Rico, AZ, March 1999.

....future ubiquity of mobile computing systems. Reducing power consumption is also a major challenge in the design of mobile systems that extends beyond advances in battery technology and low power circuit design. Energy efficient computer systems have broad environmental and economic implications [4, 5, 14, 12]. This position paper focuses on using sensors to leverage physical context and user intent to reduce a system s energy consumption. We illustrate this idea with a case study on managing the display. System level energy management approaches are currently tied almost exclusively to process ....

C. S. Ellis. The Case for Higher-Level Power Management. In Proceedings of the 7th Workshop on Hot Topics in Operating Systems, Rio Rico, AZ, March 1999.

....environments as well. While a number of efforts have explored minimizing the power consumption of specific system resources (e.g. dynamic voltage scaling algorithms for the CPU, disk spindown policies) we have advocated that the OS should explicitly manage the system wide role that energy plays [16, 5] and view it as an opportunity and challenge for resource management. Our earlier work [19] proposes currentcy as a unifying abstraction for the management of a broad variety of system devices that consume energy. We have designed a basic framework for explicitly allocating energy resources and ....

C. S. Ellis. The Case for Higher-Level Power Management. In Proceedings of the 7th Workshop on Hot Topics in Operating Systems, Rio Rico, AZ, March 1999.

....of a technique to extend disk durability. 7. RELATED WORK Attention to the issues of energy and power management is gaining momentum within operating systems research. Recent work has made the case for recognizing energy as a first class resource to be explicitly managed by the operating system [8, 32]. Work by Flinn and Satyanarayanan on energy aware adaptation using Odyssey [10] is closely related to our effort in several ways. Their approach differs in that it relies on the cooperation of applications to change the fidelity of data objects accessed in response to changes in resource ....

C. S. Ellis. The Case for Higher-Level Power Management. In Proceedings of the 7th Workshop on Hot Topics in Operating Systems, Rio Rico, AZ, March 1999.

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C. S. Ellis, "The Case for Higher-Level Power Management," 7th IEEE Wksp. Hot Topics Op. Sys., Rio Rico, AZ, Mar. 1999.

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C. Ellis, The Case for Higher Level Power Management, in Workshop on Hot Topics in Operating Systems, pp. 162167, March 1999.

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C. S. Ellis. The case for higher-level power management. In Workshop on Hot Topics in Operating Systems, Rio Rico, AZ, 1999.

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C. Ellis, "The case for higher-level power management", 7th IEEE Workshop on Hot Topics in Operating Systems, pp.162--167, 1999.

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Ellis, C., The Case for Higher Level Power Management. Duke University, March 1999.

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Ellis, C. S. The case of higher-level power management. In Proceedings of the 7 IEEE Workshop on Hot Topics in Operating Systems (HotOS-VII), pages 162-167, Rio Rico, AZ, March 1999.

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C. Ellis. The case for higher level power management. In Proc. IEEE HotOS, March 1999.

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C. Ellis, "The case for higher-level power management," in Proc. 7th IEEE Workshop on Hot Topics in Operating Systems, Mar. 1999, pp. 162--167.

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Ellis, C. "The case for higher level power management". In In Proceedings of HotOS (March 1999).

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Ellis, C., The Case for Higher Level Power Management. Duke University, March 1999.

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