{"title":"Evaluation of message delay correlation in distributed systems","authors":"Daniel Albeseder","doi":"10.1109/WISES.2005.1438722","DOIUrl":null,"url":null,"abstract":"Partially synchronous computational models fall in between synchronous models, which are demanding in terms of requirements but admit solutions to most of the important fault-tolerant distributed computing problems, and the purely asynchronous model, where this is not the case. The /spl otimes/-Model is a recently presented partially synchronous model close to pure asynchrony. It just assumes a bound on the ratio of maximum vs. minimum end-to-end delays of messages simultaneously in transit. This paper provides experimental evidence for the assumed correlation of end-to-end delays in some common type of distributed systems: using a comprehensive custom evaluation framework, we measured the end-to-end delays in a simple clock synchronization algorithm running on a fast-Ethernet network connecting Linux workstations. Our results reveal a significant correlation between maximum and minimum delay under several load conditions, and hence confirm that the bounded ratio assumption of the /spl otimes/-Model is well-founded.","PeriodicalId":266947,"journal":{"name":"Third International Workshop on Intelligent Solutions in Embedded Systems, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2005-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Third International Workshop on Intelligent Solutions in Embedded Systems, 2005.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WISES.2005.1438722","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
Partially synchronous computational models fall in between synchronous models, which are demanding in terms of requirements but admit solutions to most of the important fault-tolerant distributed computing problems, and the purely asynchronous model, where this is not the case. The /spl otimes/-Model is a recently presented partially synchronous model close to pure asynchrony. It just assumes a bound on the ratio of maximum vs. minimum end-to-end delays of messages simultaneously in transit. This paper provides experimental evidence for the assumed correlation of end-to-end delays in some common type of distributed systems: using a comprehensive custom evaluation framework, we measured the end-to-end delays in a simple clock synchronization algorithm running on a fast-Ethernet network connecting Linux workstations. Our results reveal a significant correlation between maximum and minimum delay under several load conditions, and hence confirm that the bounded ratio assumption of the /spl otimes/-Model is well-founded.