NDLI: Improving soft real-time performance through better slack reclaiming

Content Provider	IEEE Xplore Digital Library
Author	Lin, C. Brandt, S.A.
Copyright Year	2005
Description	Author affiliation: Dept. Comput. Sci., California Univ., Santa Cruz, CA (Lin, C.; Brandt, S.A.)
Abstract	Modern operating systems frequently support applications with a variety of timing constraints including hard real-time, soft real-time, and best-effort. To guarantee performance, critical applications typically over-reserve resources based on worst-case resource usage estimates, while others may reserve based on average-case or other estimates. When resources are fully subscribed, the performance of soft- and non-real-time applications depends upon the effective distribution of dynamic slack - reserved, but unused resources - from other tasks. Motivated by several representative examples, we derive four general principles for the effective management of slack. We have implemented these principles in four progressively better slack schedulers that demonstrate their effectiveness. BACKSLASH, which employs all four principles, misses fewer soft realtime deadlines than all of the other slack schedulers we examined
Starting Page	12
Ending Page	421
File Size	353869
Page Count	410
File Format	PDF
ISBN	0769524907
ISSN	10528725
DOI	10.1109/RTSS.2005.26
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Processor scheduling Operating systems Application software Computer science Timing Computer applications Time factors High level synthesis Power system modeling
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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