Characterizing Web Response Time

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dc.contributor.authorLiu, Binzhang M.S.en
dc.contributor.committeechairFox, Edward A.en
dc.contributor.committeememberAbrams, Marcen
dc.contributor.committeememberEhrich, Roger W.en
dc.contributor.departmentComputer Scienceen
dc.date.accessioned2014-03-14T20:51:38Zen
dc.date.adate1998-05-07en
dc.date.available2014-03-14T20:51:38Zen
dc.date.issued1998-04-22en
dc.date.rdate1999-05-07en
dc.date.sdate1998-04-22en
dc.description.abstractIt is critical to understand WWW latency in order to design better HTTP protocols. In this study we characterize Web response time and examine the effects of proxy caching, network bandwidth, traffic load, persistent connections for a page, and periodicity. Based on studies with four workloads, we show that at least a quarter of the total elapsed time is spent on establishing TCP connections with HTTP/1.0. The distributions of connection time and elapsed time can be modeled using Pearson, Weibul, or Log-logistic distributions. We also characterize the effect of a user's network bandwidth on response time. Average connection time from a client via a 33.6 K modem is two times longer than that from a client via switched Ethernet. We estimate the elapsed time savings from using persistent connections for a page to vary from about a quarter to a half. Response times display strong daily and weekly patterns. This study finds that a proxy caching server is sensitive to traffic loads. Contrary to the typical thought about Web proxy caching, this study also finds that a single stand-alone squid proxy cache does not always reduce response time for our workloads. Implications of these results to future versions of the HTTP protocol and to Web application design also are discussed.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-4798-11230en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-4798-11230/en
dc.identifier.urihttp://hdl.handle.net/10919/36741en
dc.publisherVirginia Techen
dc.relation.haspartthesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectWorld Wide Weben
dc.subjectLatencyen
dc.subjectProxy Cachingen
dc.titleCharacterizing Web Response Timeen
dc.typeThesisen
thesis.degree.disciplineComputer Scienceen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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