Workshop on Data Communication in Latin America and the Caribbean最新文献

Environmental monitoring (panel session) 环境监察(小组讨论)

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-03 DOI: 10.1145/371626.371771

Deoborah Estrin, S. Paton

引用次数: 0

Large group causality (invited session): a message and multicast ordering for large-scale networks 大组因果关系(邀请会话):用于大规模网络的消息和多播排序

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-03 DOI: 10.1145/371626.371768

José M. Piquer

引用次数: 0

A QoS service for low demand IP video applications over DTM 在DTM上为低需求IP视频应用提供QoS服务

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-03 DOI: 10.1145/371626.371784

C. Abbas, A. Azcorra, J. I. Moreno

引用次数: 0

An open approach for deploying programming nodes into communication networks 将编程节点部署到通信网络中的开放方法

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371823

C. A. D. Rocha, Aécio Paiva Braga, J. Souza

引用次数: 0

Habitat monitoring: application driver for wireless communications technology 生境监测:无线通信技术的应用驱动

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371720

Alberto Cerpa, J. Elson, Michael Hamilton, Jerry Zhao, D. Estrin, Lewis Girod

引用次数: 79

Lower than best effort: a design and implementation 低于最佳努力:设计和实现

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371813

K. Carlberg, Panos Gevros, J. Crowcroft

{"title":"Lower than best effort: a design and implementation","authors":"K. Carlberg, Panos Gevros, J. Crowcroft","doi":"10.1145/371626.371813","DOIUrl":"https://doi.org/10.1145/371626.371813","url":null,"abstract":"In recent years, the Internet architecture has been augmented so that Better-than-Best-Effort (BBF) services, in the form of reserved resources for specific flows, can be provided by the network. To date, this has been realized through two different and sequentially developed efforts. The first is known as Integrated Services and focuses on specific bounds on bandwidth and/or delay for specific flows. The Differential Service model was later introduced, which presented a more aggregated and local perspective regarding the forwarding of traffic. A direction that is missing in today's work on service models is a defined schema used to purposely degrade certain traffic to various levels below that of Best Effort. In a sense, a new direction that provides a balancing effect in the deployment of BBE service. This is particularly evident with continual and parallel short transaction flows (like that used for web applications) over low bandwidth links that are not subject to any backoff penalty incurred by congestion because state does not persist. In a more indirect perspective, our model correlates degraded service with the application of usage and security policies — administrative decisions that can operate in tandem or disjointly from conditions of the network. This paper attempts to address these and other issues and presents the design and implementation of such a new degraded service model and queuing mechanism used to support it.","PeriodicalId":215877,"journal":{"name":"Workshop on Data Communication in Latin America and the Caribbean","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129746618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Estimating the service time of web clients using server logs 利用服务器日志估计web客户端的服务时间

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371772

Oscar Ardaiz-Villanueva, Felix Freig, L. Navarro

{"title":"Estimating the service time of web clients using server logs","authors":"Oscar Ardaiz-Villanueva, Felix Freig, L. Navarro","doi":"10.1145/371626.371772","DOIUrl":"https://doi.org/10.1145/371626.371772","url":null,"abstract":"This article proposes and evaluates measures for estimating the service time of a web client using server logs, only from the server side without introducing traffic into the network. The HTTP protocol is described as well as the different interactions between the web server, the communication components, and the web client application. The first measure is based on the time it takes for the web server application to deliver an object to its operating system, keeping in mind the buffer effect of the server network. The second measure also considers the inter-arrival times to the server application of the GET requests for the objects that are part of a web page. We propose formulas, validated experimentally, that relate the proposed measurements in the server with the different components that take part in a web transaction and the service time experienced by clients. We have carried out several experiments to evaluate the validity of the proposed measurements and the best measure estimates the service time of the client with an error below 20% for 90% of the requests. We observed a cyclic component in the measurements of the server that can simplify the estimation of future values. For this reason, the proposed measures may be used to know what is the service time the client perceives in each visit to a server. It can also be used by content distribution networks to choose between several replica located in different places in the Internet.","PeriodicalId":215877,"journal":{"name":"Workshop on Data Communication in Latin America and the Caribbean","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124533994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Improved AntNet routing 改进蚁网路由

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371736

B. Barán

引用次数: 25

Critical path analysis of TCP transactions TCP事务的关键路径分析

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371759

BarfordPaul, CrovellaMark

{"title":"Critical path analysis of TCP transactions","authors":"BarfordPaul, CrovellaMark","doi":"10.1145/371626.371759","DOIUrl":"https://doi.org/10.1145/371626.371759","url":null,"abstract":"Improving the performance of data transfers in the Internet (such as Web transfers) requires a detailed understanding of when and how delays are introduced. Unfortunately, the complexity of data transfers like those using HTTP is great enough that identifying the precise causes of delays is difficult. In this paper we describe a method for pinpointing where delays are introduced into applications like HTTP by using critical path analysis. By constructing and profiling the critical path, it is possible to determine what fraction of total transfer latency is due to packet propagation, network variation (e.g., queuing at routers or route fluctuation). packet losses, and delays at the server and at the client. We have implemented our techique in a tool called tcpeval that automates critical path analysis for Web transactions. We show that our analysis method is robust enough to analyze traces taken for two different TCP implementations (Linux and FreeBSD). To demonstrate the utility of our approach, we present the results of critical path analysis for a set of Web transactions taken over 14 days under a variety of server and network conditions. The results show that critical path analysis can shed considerable light on the causes of delays in Web transfers, and can expose subtleties in the behavior of the entire end-to-end system.","PeriodicalId":215877,"journal":{"name":"Workshop on Data Communication in Latin America and the Caribbean","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130270281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Review of traffic scheduler features on general purpose platforms 回顾通用平台上的交通调度功能

Workshop on Data Communication in Latin America and the Caribbean Pub Date : 2001-04-01 DOI: 10.1145/371626.371748

E. Magaña, Edurne Izkue, J. Villadangos

引用次数: 3