creators_name: Michele, Mazzucco
creators_name: Manuel , Mazzara
creators_name: Nicola, Dragoni
type: conference_item
datestamp: 2010-07-01 11:51:57
lastmod: 2011-04-05 15:07:01
metadata_visibility: show
title: Design of QoS-aware Provisioning Systems
ispublished: pub
subjects: deploy_method_resil
full_text_status: public
pres_type: paper
abstract: We present an architecture of a hosting system consisting of a set of hosted Web Services subject to QoS constraints, and a certain number of servers used to run users demand. The traffic is session-based, while provider and users
agree on SLAs specifying the expected level of service performance such that the service provider is liable to compensate his/her customers if the level of performance
is not satisfactory. The system is driven by a utility function which tries to optimize the average earned revenue per unit time. The middleware collects demand and performance statistics, and estimates traffic parameters in order to make dynamic decisions concerning server allocation and admission control. We empirically evaluate the effects of admission policies, resource allocation and
service differentiation schemes on the achieved revenues, and we find that our system is robust enough to successfully deal with session-based traffic under different
conditions.
event_title: 4th Nordic Workshop on Dependability and Security (NODES 2010)
event_location: Copenhagen, Denmark
event_type: workshop
refereed: TRUE
citation:   Michele, Mazzucco and Manuel , Mazzara and Nicola, Dragoni   Design of QoS-aware Provisioning Systems.  In: 4th Nordic Workshop on Dependability and Security (NODES 2010), Copenhagen, Denmark.     
document_url: http://deploy-eprints.ecs.soton.ac.uk/233/1/Design_of_QoS-aware_Provisioning_Systems.pdf