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dc.contributor.authorLin, Ying-Daren_US
dc.contributor.authorTien, Ching-Mingen_US
dc.contributor.authorTsao, Shih-Chiangen_US
dc.contributor.authorWen, Shuo-Yenen_US
dc.contributor.authorLai, Yuan-Chengen_US
dc.date.accessioned2014-12-08T15:12:43Z-
dc.date.available2014-12-08T15:12:43Z-
dc.date.issued2008en_US
dc.identifier.issn1607-9264en_US
dc.identifier.urihttp://hdl.handle.net/11536/9782-
dc.description.abstractWith the explosive growth of Web traffic, the load on a Web server becomes heavier, leading to the longer user-perceived latency. Website operators would like to employ service differentiation to offer better throughput and shorter user-perceived latency to some specific users. This paper presents an HTTP request scheduling algorithm deployed at the Website gateway to enable the Web quality of service without any modification to client or server software. A variation of the deficit round robin algorithm for packet scheduling and a window control mechanism are presented to decide the order and the releasing time of requests, respectively. The order is decided by the response size of the requests and the pre-defined service weights. The ratio of the service rate got by the service classes is determined by the weights, whereas the releasing time is decided by the service rate of the Web server. The evaluation shows the scheduling algorithm can provide service differentiation and improve server throughput and user-perceived latency. When the weight ratio 6:3:1 is assigned to three service classes, the QoS Website gateway makes them get 60%, 30%, and 10% of the overall throughput as expected, regardless whatever page sizes. In addition, the throughput and the user-perceived latency of the class with the largest weight can be improved by up to 176% and 69% of the QoS-disabled values, respectively.en_US
dc.language.isoen_USen_US
dc.subjectWeb QoSen_US
dc.subjectservice differentiationen_US
dc.subjectrequest schedulingen_US
dc.subjectgatewayen_US
dc.titleRequest Scheduling for Differentiated QoS at Website Gatewayen_US
dc.typeArticleen_US
dc.identifier.journalJOURNAL OF INTERNET TECHNOLOGYen_US
dc.citation.volume9en_US
dc.citation.issue3en_US
dc.citation.spage237en_US
dc.citation.epage244en_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.department資訊技術服務中心zh_TW
dc.contributor.department網路測試中心zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.contributor.departmentInformation Technology Services Centeren_US
dc.contributor.departmentNetwork Benchmarking Laben_US
dc.identifier.wosnumberWOS:000207999700006-
dc.citation.woscount1-
Appears in Collections:Articles