Empirical Comparison of Block Relay Protocols
Empirical Comparison of Block Relay Protocols
复制标题
块中继协议的实证比较
DOI：
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复制
发表时间：
2022
影响因子：
5.3
通讯作者：
A. Trachtenberg
中科院分区：
文献类型：
--
作者：
Muhammad Anas Imtiaz;D. Starobinski;A. Trachtenberg
块中继协议对公共区块链的性能和安全性起着至关重要的作用。因此，已经在比特币及其变体(例如，传统的、紧凑的块中继和Graphene)的环境中部署了几个这样的协议，以试图降低带宽利用率。然而，这些协议在现实联网条件下(例如，在节点搅动-加入和离开网络的情况下)的相对性能仍然未知。本文旨在通过一个由12个连接到比特币现金区块链的完整节点组成的实验试验台来填补这一关键知识空白。借助于新的日志记录工具，我们对比了这三种协议在实际场景中在通信、延迟和块解码成功率方面的性能。我们的主要发现是，当节点保持连接时，Graphene的性能通常最好，平均传播延迟为190ms(即，比紧凑块低29%，比传统协议低80%)。然而，当节点以高速率搅动时，紧凑的块可能表现得更好。通过仔细的时间分析，我们确定了协议效率低下的一些根本原因，以及潜在的缓解措施。我们已经向更广泛的研究社区公开提供了我们的测量框架和实验日志。
Block relay protocols play a key role in the performance and security of public blockchains. As a result, several such protocols have been deployed in the context of Bitcoin and its variants (e.g., legacy, compact block relay and Graphene) in an attempt to reduce bandwidth utilization. However, the relative performance of these protocols in realistic networking conditions (e.g., with nodes churning - joining and leaving the network) is still not known. This paper aims to fill this key knowledge gap using an experimental testbed of twelve full nodes connected to the Bitcoin Cash blockchain. With the aid of novel logging tools, we contrast the performance of these three protocols, in realistic scenarios, with respect to communication, delay, and block decoding success. Our main findings are that Graphene generally performs the best when nodes remain connected, boasting an average propagation delay of 190 ms (i.e., 29% lower than compact block and 80% lower than the legacy protocol). However, when nodes churn at a high rate, compact blocks may perform better. Through a careful temporal analysis, we identify some root causes of the protocol inefficiencies, together with potential mitigation. We have made our measurement framework and experimental logs publicly available to the broader research community.
DOI：
10.1007/978-3-662-64331-0_23
发表时间：
2021
期刊：
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影响因子：
--
作者：
Lucianna Kiffer;Asad Salman;Dave Levin;A. Mislove;C. Nita-Rotaru
通讯作者：
Lucianna Kiffer;Asad Salman;Dave Levin;A. Mislove;C. Nita-Rotaru
增强大容量电力系统应对极端天气威胁的可靠性：2021 年德克萨斯州电力危机的教训
影响因子：
1.9
作者：
Lo Prete, Chiara;Blumsack, Seth
通讯作者：
Blumsack, Seth