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arXiv 2102.07240cs.DCcs.CR
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拜占庭广播的好情况延迟:一个完全分类

Good-case Latency of Byzantine Broadcast: A Complete Categorization

Ittai Abraham, Kartik Nayak, Ling Ren, Zhuolun Xiang

摘要:

本文探讨了拜占庭容错广播的好情况下的延迟问题,受到现实世界的延迟和实际状态机复制协议的性能。良好情况延迟测量当指定的广播器无故障时所有无故障方提交所花费的时间。我们提供了一个完整的表征紧边界上的好情况下的延迟,在认证设置下同步,部分同步和同步。我们的一些新结果可能令人惊讶,例如,2-当且仅当$n\geq 5f-1$,并且在同步下的$n/3<f<n/2$下的良好情况等待时间的严格界限不是延迟界限的整数倍时,循环PBFT式部分同步拜占庭广播是可能的。

英文摘要:

This paper explores the problem good-case latency of Byzantine fault-tolerant broadcast, motivated by the real-world latency and performance of practical state machine replication protocols. The good-case latency measures the time it takes for all non-faulty parties to commit when the designated broadcaster is non-faulty. We provide a complete characterization of tight bounds on good-case latency, in the authenticated setting under synchrony, partial synchrony and asynchrony. Some of our new results may be surprising, e.g., 2-round PBFT-style partially synchronous Byzantine broadcast is possible if and only if $n\geq 5f-1$, and a tight bound for good-case latency under $n/3<f<n/2$ under synchrony is not an integer multiple of the delay bound.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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