物联网场景下云服务放置算法研究

With the rapid development of cloud computing technology, data center as the infrastructure of cloud computing, has attracted more and more attention. In data centers, appropriate cloud service placement algorithms can effectively improve resource utilization efficiency and reduce operating costs. Meanwhile, cloud platform plays a important role in IoT system. This paper studies the cloud service placement algorithm towards IoT scenario. Firstly, in the exclusive cloud service placement scenario, the minimum average RTT algorithm between cloud services is proposed to reduce the cloud service request response time. Secondly, in the scenario of shared cloud service placement, a load-based cloud service grouping merging placement algorithm is proposed to reduce the usage of physical machine under the condition of meeting the minimum request response time. Finally, this paper proposes a cloud service placement algorithm based on cosine distance which effectively reduces the usage of physical machines.