A predictive system shutdown method for energy saving of event-driven computation
ICCAD '97 Proceedings of the 1997 IEEE/ACM international conference on Computer-aided design
On-line scheduling of hard real-time tasks on variable voltage processor
Proceedings of the 1998 IEEE/ACM international conference on Computer-aided design
Low-power task scheduling for multiple devices
CODES '00 Proceedings of the eighth international workshop on Hardware/software codesign
A survey of design techniques for system-level dynamic power management
IEEE Transactions on Very Large Scale Integration (VLSI) Systems - Special section on low-power electronics and design
Operating-system directed power reduction
ISLPED '00 Proceedings of the 2000 international symposium on Low power electronics and design
Proceedings of the 2001 Asia and South Pacific Design Automation Conference
Policy optimization for dynamic power management
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Pruning-based energy-optimal device scheduling for hard real-time systems
Proceedings of the tenth international symposium on Hardware/software codesign
Online energy-aware I/O device scheduling for hard real-time systems
Proceedings of the conference on Design, automation and test in Europe: Proceedings
Combining compiler and operating system support for energy efficient I/O on embedded platforms
SCOPES '05 Proceedings of the 2005 workshop on Software and compilers for embedded systems
EMSOFT '08 Proceedings of the 8th ACM international conference on Embedded software
Minimizing expected energy consumption through optimal integration of DVS and DPM
Proceedings of the 2009 International Conference on Computer-Aided Design
Research directions for embedded operating systems
ICESS'04 Proceedings of the First international conference on Embedded Software and Systems
Reducing system level power consumption for mobile and embedded platforms
ARCS'05 Proceedings of the 18th international conference on Architecture of Computing Systems conference on Systems Aspects in Organic and Pervasive Computing
Energy-Efficient Sensing with the Low Power, Energy Aware Processing (LEAP) Architecture
ACM Transactions on Embedded Computing Systems (TECS)
Functional-Level Energy Characterization of µC/OS-II and Cache Locking for Energy Saving
Bell Labs Technical Journal
| Hi-index | 0.00 |
Power consumption is an important design parameter for embedded and portable systems. Software-controlled (or dynamic) power management (DPM) has recently emerged as an attractive alternative to inflexible hardware solutions. DPM for hard real-time systems has received relatively little attention. In particular, energy-driven I/O device scheduling for real-time systems has not been considered before. We present the first online DPM algorithm, which we call Low Energy Device Scheduler (LEDES), for hard real-time systems. LEDES takes as inputs a predetermined task schedule and a device-usage list for each task and it generates a sequence of sleep/working states for each device. It guarantees that real-time constraints are not violated and it also minimizes the energy consumed by the I/O devices used by the task set. LEDES is energy-optimal under the constraint that the start times of the tasks are fixed. We present a case study to show that LEDES can reduce energy consumption by almost 50%.