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On Optimal Deadlock Detection Scheduling
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BibTeX
@MISC{Ling_onoptimal,
author = {Yibei Ling and Shigang Chen and Cho-yu Jason Chiang},
title = {On Optimal Deadlock Detection Scheduling},
year = {}
}
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Abstract
Abstract—Deadlock detection scheduling is an important, yet often overlooked problem that can significantly affect the overall performance of deadlock handling. Excessive initiation of deadlock detection increases overall message usage, resulting in degraded system performance in the absence of deadlocks, while insufficient initiation of deadlock detection increases the deadlock persistence time, resulting in an increased deadlock resolution cost in the presence of deadlocks. The investigation of this performance trade-off, however, is missing in the literature. This paper studies the impact of deadlock detection scheduling on the overall performance of deadlock handling. In particular, we show that there exists an optimal deadlock detection frequency that yields the minimum long-run mean average cost, which is determined by the message complexities of the deadlock detection and resolution algorithms being used, as well as the rate of deadlock formation, denoted as. For the best known deadlock detection and resolution algorithms, we show that the asymptotically optimal frequency of deadlock detection scheduling that minimizes the overall message overhead is Oðð nÞ 1=3 Þ when the total number n of processes is sufficiently large. Furthermore, we show that, in general, fully distributed (uncoordinated) deadlock detection scheduling cannot be performed as efficiently as centralized (coordinated) deadlock detection scheduling. Index Terms—Deadlock detection scheduling, deadlock formation rate, deadlock persistence time. Ç
Keyphrases
deadlock detection optimal deadlock detection scheduling deadlock persistence time deadlock handling overall performance resolution algorithm overall message usage deadlock formation minimum long-run mean average cost known deadlock detection performance trade-off overall message overhead message complexity paper study optimal frequency deadlock formation rate abstract deadlock detection scheduling total number degraded system performance increased deadlock resolution cost optimal deadlock detection frequency excessive initiation index term deadlock detection scheduling insufficient initiation
