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Abstract
En 中文
Recently, there is an increasing interest in programming models of real-time systems and approaches of flexible scheduling for dealing with situations of transient overloading, which can occur in non-deterministic environments. This paper presents the (p+i,k)-firm approach that can be seen as a combination and generalization of imprecise computing [3] and of deadline (m,k)-firm [7]. This approach extends the (m,k)-firm concept allowing a task to execute in an imprecise way, obtaining better results than a deadline missing. The approach seeks to establish a compromise between avoiding temporal failures and maximizing the quality (cumulative value). A battery of tests was developed to evaluate the approach and its capacity to reduce the probability of dynamic failures and to obtain a smooth degradation in overload conditions.
Keywords:
distributed systems
real-time
web QoS
Journal
P
IF:
0
Papers:
4
Citations:
0
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