NDLI: A improved elastic scheduling algorithm based on feedback control theory

Content Provider	IEEE Xplore Digital Library
Author	Chen Yu Dai Qionghai
Copyright Year	2004
Description	Author affiliation: Broadband Network & Multimedia Res. Center, Tsinghua Univ., Guangdong, China (Chen Yu; Dai Qionghai)
Abstract	Due to the variable of the tasks' attributes, the behavior of soft real-time systems is becoming increasingly unpredictable. Under this circumstance, the scheduling algorithms, which depend on the tasks' static attributes, can't provide usable and efficient resource allocation for those soft real-time systems. In this paper, we present an elastic scheduling algorithm for flexible workload firstly. Based on logging system resource utilization and the number of task instances executing and lost in a sampling period, this algorithm adjusts the number of task instances executing in the next sampling period to guarantee the tasks' basic QoS and improve the system resource utilization. Based on the above algorithm, we establish feedback control model for controlled system and controller, and use feedback control algorithm to improve the efficiency and stability for resource allocation. In this paper, we analyze the algorithms, and simulate them on NS2, and evaluate their performance.
Starting Page	1330
Ending Page	1339
File Size	1469319
Page Count	10
File Format	PDF
ISBN	0780384067
DOI	10.1109/ICOSP.2004.1441572
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-08-31
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scheduling algorithm Feedback control Resource management Real time systems Sampling methods Control system synthesis Stability Performance analysis Algorithm design and analysis Analytical models
Content Type	Text
Resource Type	Article

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