Fault-tolerant clock synchronization
Fault-tolerant clock synchronization
复制标题
容错时钟同步
DOI:
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发表时间:
1984
期刊:
影响因子:
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通讯作者:
D. Dolev
中科院分区:
文献类型:
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作者:
Joseph Y. Halpern;B. Simons;H. Strong;D. Dolev
This paper gives two simple efficient distributed algorithms: one for keeping clocks in a network synchronized and one for allowing new processors to join the network with their clocks synchronized. The algorithms tolerate both link and node failures of any type. The algorithm for maintaining synchronization will work for arbitrary networks (rather than just completely connected networks) and tolerates any number of processor or communication link faults as long as the correct processors remain connected by fault-free paths. It thus represents an improvement over other clock synchronization algorithms such as [LM1,LM2,LL1]. Our algorithm for allowing new processors to join requires that more than half the processors be correct, a requirement which is provably necessary.