Showing papers in "WSEAS TRANSACTIONS on COMMUNICATIONS archive in 2002"
Journal Article•
TL;DR: Analgorithm that actually provides Class of Servicebased differentiated differentiatedaccessto serverclusters, and offers better playground for QoSmechanisms in client-serverenvironments is described.
Abstract: Theswift growth of Internethasboostedtheuseof Webbasedservicesandin somepracticalcaseshas led to overwhelmingrequestburststo servers.Relationaldatabasequeries,imagestorage/retrie val andothernew typesof applicationtransactionshave becomeincreasinglypopular. Their coexistencein commercialparalleland distributedsystemshave generatedsomeuniquelynew loadingproblems.For example,the constantincreaseof requestratefinally leadsto processingpowerrequirement exceedingthatof theaccessedserver. As aconsequence, the responsetimesincreaseandsomeportionof the requestsarelost. Clusteringof serversto meetthe growing demandfor serverprocessingcapacity, especiallyin web-basedservicesupply, havecreatedtheneedfor intelligent switchingat front-enddevices.As aconsequence of clustering,multilayerswitchingschemeshavebeendeveloped to enableoptimumloadingof the individual serversin a cluster. In this paper , we formulatethe load balancing problemtaking the QoSinto considerationandintroducea QoSawareloadbalancingalgorithm(QoS-LB).The performanceof thealgorithmis simulatedandresultsindicatingtheloadbalancingcapabilityof thealgorithmare presented.Theoverall ideaof this paperis to describeanalgorithmthatactuallyprovidesClassof Servicebased differentiatedaccessto serverclusters,andoffersbetterplaygroundfor QoSmechanismsin client-serverenvironments.Theengineeringtaskto offerQoSguarantees with suchadifferentationtool is outof thescopeof thispaper .
4 citations