基于信誉机制的云计算资源预留算法研究

Reseach on Reputation Mechanism-Based Resource Reservation Algorithm for Cloud Computing

有效地管理和灵活调配云计算中庞大的虚拟资源,使得使用率最大化的同时,也确保用户所用资源的有效性,成为了云计算重点研究的问题。针对这一问题,在分析研究前人提出的预留算法基础上,提出一种利用信誉机制的资源预留算法。通过引入时间驱动的信誉评估模型,对云资源、资源使用者和提供者三个信誉度进行实时的计算分析,改进方法在解决多个用户争夺同一资源时,可将用户的申请按信誉度高低排序,有效避免恶意预留申请引起的资源浪费问题。仿真结果表明,资源预留算法是高效的和可行的,并且明显提高了系统资源的利用率。

The huge virtual resources in cloud computing should be managed and distributed effectively and etti- cieutly. On the basis of reservation algorithm proposed by previous researches, an improved resource reservation algo- rithm was proposed based on the reputation mechanism. A reputation evaluation model of time driver was presented, and three reputation degrees such as cloud resources, resource users and providers, were computed and analyzed. When multiple users compete for the same resources, the improved method can solve it with ordering the reputation degree user application. The malicious reservation of application was avoided effectively, and the resource waste problem can be solved. Simulation result shows that the new resource reservation algorithm is efficient and feasible, and the system resource utilization can be improved greatly.