SLA-based admission control for a Software-as-a-Service provider in Cloud computing environments
- 作者：Linlin Wu ; linwu@csse.unimelb.edu.au ; Saurabh Kumar Garg sgrag@csse.unimelb.edu.au ; Rajkumar Buyya raj@csse.unimelb.edu.au
- 关键词：Cloud computing ; Service Level Agreement (SLA) ; Admission control ; Software as a Service ; Scalability of application services
- 刊名：Journal of Computer and System Sciences
- 出版年：2012
- 期刊代码：186_00220000
- 类别：et
- 出版时间：September, 2012
- 卷：78
- 期：5
- 页码：1280-1299
- 文件大小：4126 K
摘要
Software as a Service (SaaS) provides access to applications to end users over the Internet without upfront investment in infrastructure and software. To serve their customers, SaaS providers utilise resources of internal data centres or rent resources from a public Infrastructure as a Service (IaaS) provider. In-house hosting can increase administration and maintenance costs whereas renting from an IaaS provider can impact the service quality due to its variable performance. To overcome these limitations, we propose innovative admission control and scheduling algorithms for SaaS providers to effectively utilise public Cloud resources to maximize profit by minimizing cost and improving customer satisfaction level. Furthermore, we conduct an extensive evaluation study to analyse which solution suits best in which scenario to maximize SaaS provider始s profit. Simulation results show that our proposed algorithms provide substantial improvement (up to 40%cost saving) over reference ones across all ranges of variation in QoS parameters.