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Primary/alternate version technique is a cost-effective means which trades the quality of computation results for promptness to tolerate the software faults. Generally speaking, this method requires that each real-time periodic task has two versions: primary and alternate. The primary version provides a result that is in some sense more desirable, but it may be subject to timing failure due to its...
Dependability is the representative property that predominantly distinguishes a hard real-time system from other computer systems besides timeliness. Primary/alternate version technique is a cost-effective means which trades the quality of computation results for promptness to tolerate the software faults. The kernel algorithm proposed in this paper employs the off-line backwards-RM scheme to pre-allocate...
The real-time scheduling algorithms play an important role in real-time systems. Whether or not the real-time tasks could be completed within the specified deadline mainly relies on scheduling algorithms. This article proposes a sectional real-time scheduling algorithm called SS (sectional scheduling), and this algorithm divides the system load into three cases according to the intension of system...
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