NDLI: Adaptive threshold-based scheduling for real-time and non-real-time traffic

Content Provider	IEEE Xplore Digital Library
Author	Zhu, W. Chanson, S.T.
Copyright Year	1992
Description	Author affiliation: Dept. of Comput. Sci., British Columbia Univ., Vancouver, BC, Canada (Zhu, W.; Chanson, S.T.)
Abstract	A study on scheduling mixed real-time and nonreal-time traffic is presented. The work is motivated by the need to provide satisfactory performance tradeoffs in a dynamic load condition where the arrival rates and proportions of the real-time and nonreal-time packets vary with time. The authors first examine two threshold-based schemes, queue length threshold and minimum early threshold, and propose the corresponding adaptive schemes based on results from approximate analysis and simulation. The idea is to improve performance by adjusting tradeoff points adaptively as the arrival rates change. The authors further discuss the idea of integrating the two thresholds. The new algorithm ADP, is evaluated by simulation under various load conditions and compared with other common scheduling disciplines as well as an optimal offline algorithm. It is concluded that, by setting appropriate threshold functions in accordance with the requirements of applications, one can achieve satisfactory bounded loss ratio for real-time packets and acceptably low average delay for nonreal-time packets in a wide range of workload conditions.
Starting Page	125
Ending Page	135
File Size	851688
Page Count	11
File Format	PDF
ISBN	0818631953
DOI	10.1109/REAL.1992.242670
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-12-02
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptive scheduling Processor scheduling Real time systems Scheduling algorithm Computer science Quality of service Traffic control Queueing analysis Analytical models Delay effects
Content Type	Text
Resource Type	Article

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