Power-conscious Scheduling for Real-time Embedded Systems Design. Issue 2 (2001)

• Record Type: Journal Article
• Authors: Shin, Youngsoo; Choi, Kiyoung; Sakurai, Takayasu
• Is Part Of: VLSI design. Volume 12:Issue 2(2001)
• Page Start: 139
• Page End: 150
• Publication Date: 2001
• Subjects: Real-time -- Scheduling -- Operating system -- Processor -- Low-power -- CMOS; Integrated circuits -- Very large scale integration -- Periodicals; 621.395
• DOI: 10.1155/2001/23925
• Languages: English
• ISSNs: 1065-514X

Abstract

Abstract : Power efficient design of real-time embedded systems based on programmable processors becomes more important as system functionality is increasingly realized through software. We address a power optimization method for real-time embedded applications on a variable speed processor. The method combines off-line and on-line components. The off-line component determines the lowest possible maximum processor speed while guaranteeing deadlines of all tasks. The on-line component dynamically varies the processor speed or bring a processor into a power-down mode to exploit execution time variations and idle intervals. Experimental results show that the proposed method obtains a significant power reduction across several kinds of applications.