云计算环境中SBS应用动态资源分配方法

建立了一个SBS（基于服务的系统，service based system）应用端到端性能评价模型，并在该模型的基础上提出了SBS应用动态资源分配方法，该方法通过将静态的初始资源分配和动态的资源分配方案调整相结合，能够适应用户访问行为的动态变化，保证SBS应用端到端性能. 在SBS应用动态资源分配问题求解中，提出了服务吞吐量约束确定算法并在此基础上 给出了SBS应用动态资源分配算法，该算法根据SBS应用吞吐量约束确定服务资源需求量并在此基础上通过起始服务 到服务间的转移时间计算服务的资源分配时刻，从而能够在保证SBS应用端到端性能约束的同时提高资源利用率. 实验验证了所提出的基于SBS应用端到端性能评价模型的动态资源分配方法的有效性.

Dynamic resource allocation for SBS application in cloud computing

An end-to-end performance evaluation model for service based system (SBS) application is formed and based on this model, a dynamic resource allocation method for SBS application is proposed. This method combines the static initial resource allocation and dynamic adjustment of resource allocation plan together, which can adapt to the dynamic change of the user behavior and preserve the end-to-end performance of SBS application. In the problem solving, a dynamic resource allocation algorithm for SBS application is proposed. This algorithm determines the resource demand of each service according to the end to end throughput requirement of the SBS application and determines the resource allocation time of each service according to the transfer time between the service and the initial service of the SBS application. By this, the algorithm can preserve the end to end performance constraint meanwhile improve the resource utility. The experiments verify the effectiveness of the proposed end-to-end performance evaluation model and the dynamic resource allocation method.