摘要
针对云计算环境下Saa S服务可伸缩性的分析评估问题,通过分析Saa S服务伸缩性需求和特点,给出其可伸缩性定义,并且提出一种新的可伸缩性评估模型和度量指标,具体包括:资源利用率、资源生产率、收敛性。最后,基于亚马逊EC2云计算平台,对评估模型和方法进行实例验证。
Cloud computing has recently emerged as a platform which provides an elasticcapability, on-demand us-age for Software as a Service （ SaaS） .It can dynamically adjust resource assignment based on system loads to assure SaaS quality.To address the issues for scalability analysis and evaluation of SaaS in cloud computing,this paper an-alyzes the requirements and features of scalability and defines a notion of it.Then we propose new formal models and metrics to evaluate and analyze system scalability.Specifically, it includes resource utilization, resource productivity and convergence.In addition,the paper reports case study results based on Amazon′s EC2 cloud tech-nology using the proposed models and metrics.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2014年第6期998-1000,共3页
Journal of Northwestern Polytechnical University
基金
国家自然科学基金(61103003)
航天科技支撑计划(2014HTXGD)资助
关键词
性能
服务质量
资源分配
可扩展性
稳定性
可伸缩性
云计算
云测试
服务质量等级(
SLA)
SAAS服务
bandwidth, computer software, convergence of numerical methods, cost functions, hard-disk storage,monitoring, network performance, productivity, program processors, quality of service, resource allocation, response time （ control systems ）, scalability, Stability, vectors
cloud computing, cloud testing,service level agreement （SEA）, software-as-a-service （SaaS）
