Title
To Schedule or to Execute: Decision Support and Performance Implications
Abstract
This paper addresses a fundamental trade-off in dynamic scheduling between the cost of scheduling and the quality of the resulting schedules. The time allocated to scheduling must be controlled explicitly, in order to obtain good-quality schedules in reasonable times. As task constraints are relaxed, the algorithms proposed in this paper increase scheduling complexity to optimize longer and obtain high-quality schedules. When task constraints are tightened, the algorithms adjust scheduling complexity to reduce the adverse effect of long scheduling times on the schedule quality. We show that taking into account the scheduling time is crucial for honoring the deadlines of scheduled tasks. We investigate the performance of our algorithms in two scheduling models: one that allows idle-time intervals to exist in the schedule and another that does not. The model with idle-time intervals has important implications for dynamic scheduling which are discussed in the paper. Experimental evaluation of the proposed algorithms shows that our algorithms outperform other candidate algorithms in several parameter configurations.
Year
DOI
Venue
1999
10.1023/A:1008007325129
Realtime systems
Keywords
DocType
Volume
real-time tasks,dynamic scheduling,scheduling time
Journal
16
Issue
ISSN
Citations 
2-3
0922-6443
2
PageRank 
References 
Authors
0.46
12
3
Name
Order
Citations
PageRank
Hamidzadeh Babak118424.99
Yacine Atif230637.88
Krithi Ramamritham34975936.38