How to Choose a Timing Model?

Idit Keidar, Alexander Shraer
2007 37th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN'07)  
When employing a consensus algorithm for state machine replication, should one optimize for the case that all communication links are usually timely, or for fewer timely links? Does optimizing a protocol for better message complexity hamper the time complexity? In this paper, we investigate these types of questions using mathematical analysis as well as experiments over PlanetLab (WAN) and a LAN. We present a new and efficient leader-based consensus protocol that has O(n) stable-state message
more » ... mplexity (in a system with n processes) and requires only O(n) links to be timely at stable times. We compare this protocol with several previously suggested protocols. Our results show that a protocol that requires fewer timely links can achieve better performance, even if it sends fewer messages.
doi:10.1109/dsn.2007.55 dblp:conf/dsn/KeidarS07 fatcat:yodfxm7ym5gwzel3usqsvkz46a