NDLI: A variable rate execution model

Content Provider	IEEE Xplore Digital Library
Author	Goddard, S. Xin Liu
Copyright Year	2004
Description	Author affiliation: Comput. Sci. & Eng., Nebraska Univ., Lincoln, NE, USA (Goddard, S.; Xin Liu)
Abstract	We present a task model for adaptive real-time tasks in which a task's execution rate requirements are allowed to change at any time. The model, variable rate execution (VRE), is an extension of the rate-based execution (RBE) model. We relax the constant execution rate assumption of canonical real-time task models by allowing both the worst case execution time (WCET) and the period to be variable. The VRE model also supports tasks joining and leaving the system at any time. A schedulability condition for the VRE task model is presented that can be used as an online admission control test for the acceptance of new tasks or rate changes. Finally, a VRE scheduler was implemented in Linux as a loadable module, and several experiments demonstrate its correctness and analyze the overhead.
Sponsorship	Euromicro
Starting Page	135
Ending Page	143
File Size	468737
Page Count	9
File Format	PDF
ISBN	0769521762
ISSN	10683070
DOI	10.1109/EMRTS.2004.1311015
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-02
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quality of service Runtime Radar tracking Decoding Linux Scheduling algorithm Target tracking Computer science Admission control Testing
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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