Mechanisms for Enhancing the Flexibility and Utility of Hard Real-Time Systems

N C Audsley; R I Davis; A Burns

doi:10.1109/REAL.1994.342734

Mechanisms for Enhancing the Flexibility and Utility of Hard Real-Time Systems

N C Audsley, R I Davis, A Burns

Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Adaptive and dynamic behaviour is seen as one of the key characteristics of next generation hard real-time systems. Whilst fixed priority pre-emptive scheduling is rapidly becoming a de facto standard in real-time systems engineering, it remains inflexible in its purest form. One method of increasing flexibility is via the incorporation of optional components into processes with hard deadlines. Such components are not guaranteed off-line, but may be accepted at run-time if sufficient spare capacity becomes available. This paper describes new mechanisms which are required to schedule effectively optional components: mechanisms which enable spare capacity to be detected early and on-line guarantees to be given

Original language	English
Title of host publication	IEEE Real-Time Systems Symposium
Pages	12-21
Number of pages	10
DOIs	https://doi.org/10.1109/REAL.1994.342734
Publication status	Published - Dec 1994

Keywords

real-time
fixed priority
spare capacity
gain time

Access to Document

10.1109/REAL.1994.342734

http://www-users.cs.york.ac.uk/~robdavis/

Cite this

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title = "Mechanisms for Enhancing the Flexibility and Utility of Hard Real-Time Systems",

abstract = "Adaptive and dynamic behaviour is seen as one of the key characteristics of next generation hard real-time systems. Whilst fixed priority pre-emptive scheduling is rapidly becoming a de facto standard in real-time systems engineering, it remains inflexible in its purest form. One method of increasing flexibility is via the incorporation of optional components into processes with hard deadlines. Such components are not guaranteed off-line, but may be accepted at run-time if sufficient spare capacity becomes available. This paper describes new mechanisms which are required to schedule effectively optional components: mechanisms which enable spare capacity to be detected early and on-line guarantees to be given",

keywords = "real-time, fixed priority, spare capacity, gain time",

author = "Audsley, {N C} and Davis, {R I} and A Burns",

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doi = "10.1109/REAL.1994.342734",

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N2 - Adaptive and dynamic behaviour is seen as one of the key characteristics of next generation hard real-time systems. Whilst fixed priority pre-emptive scheduling is rapidly becoming a de facto standard in real-time systems engineering, it remains inflexible in its purest form. One method of increasing flexibility is via the incorporation of optional components into processes with hard deadlines. Such components are not guaranteed off-line, but may be accepted at run-time if sufficient spare capacity becomes available. This paper describes new mechanisms which are required to schedule effectively optional components: mechanisms which enable spare capacity to be detected early and on-line guarantees to be given

AB - Adaptive and dynamic behaviour is seen as one of the key characteristics of next generation hard real-time systems. Whilst fixed priority pre-emptive scheduling is rapidly becoming a de facto standard in real-time systems engineering, it remains inflexible in its purest form. One method of increasing flexibility is via the incorporation of optional components into processes with hard deadlines. Such components are not guaranteed off-line, but may be accepted at run-time if sufficient spare capacity becomes available. This paper describes new mechanisms which are required to schedule effectively optional components: mechanisms which enable spare capacity to be detected early and on-line guarantees to be given

KW - real-time

KW - fixed priority

KW - spare capacity

KW - gain time

U2 - 10.1109/REAL.1994.342734

DO - 10.1109/REAL.1994.342734

M3 - Conference contribution

SP - 12

EP - 21

BT - IEEE Real-Time Systems Symposium

ER -