Survey of analysis of performance in cloud computing environment

Most prominent characteristics of cloud computing is Resource virtualization. The placement of virtual machines (VMs) in the physical machines determines the resource utilization efficiency and service quality. For distributed cloud computing, where the data centers (DCs) span a large number of topographical areas and every DCs are connected by high speed internet, the placement of VMs of one big job or of one organization focuses on minimizing the distances and bandwidths between DCs. This minimizes communication latency and improves availability. A data center cluster should be found firstly to accommodate the requested VMs. In this paper algorithms of cloud computing are surveyed and analyzed systematically. Several algorithms of resource allocation and VM support which affects the performance in cloud.