Research On Energy And Performance Efficient Virtual Machine Live Migration Strategy

In recent years,cloud computing is an emerging technology and popular industry more and more into people's vision,based on the pay as you go(pay-as-you-go)service model can provide the underlying IT service for all walks of life,and from the construction and maintenance of computer center of trouble.The major Internet giants have also launched their own cloud computing platform,and synchronization is the number of Cloud Computing Center increase,is also larger,to provide convenient services for us at the same time,the power consumption problem of cloud computing center have become increasingly prominent.As the cloud computing center uses virtualization technology to provide users with a stable service based on the full use of computing resources,virtual machine online migration technology to reduce the power consumption of cloud computing center is an important technology.In the process of virtual machine migration,it will inevitably lead to the decline of the quality of service,which may lead to the violation of SLA(user layer protocol).How to reduce the power consumption by using virtual machine migration technology is a hot issue in the premise of ensuring that the SLA violation rate is kept in a controllable range.According to the virtual machine migration model of overload detection and light load detection,virtual machine and virtual machine from redistribution to reduce the power consumption of the four steps and the service level agreement(SLA,Service Level Agreement)decreased violation rate has the greatest impact on light load detection and virtual machine allocation optimization was performed in two steps algorithm and innovation.The problems existing in the virtual machine light load detection algorithm is easy to cause the virtual machine "migration"(over-migration)problem is proposed in this paper,the utilization rate of the minimum CPU threshold method based on light load detection,so as to avoid excessive virtual machine migration brings SLA violation rate and power consumption rise.Aiming at the problem that the current process of virtual machine re allocation algorithm is relatively simple,and there is a certain power loss space,this paper presents a PASA algorithm combined with simulated annealing algorithm.This paper uses the CloudSim simulator as the simulation platform,simulate the large cloud containing 800 physical nodes computing center,a new algorithm is proposed in this paper to test the combination in which,after a lot of experiments andultimately determine the parameter threshold algorithm and simulated annealing algorithm.The optimal power consumption and SLA violation rate are used as the index to compare with the best algorithm proposed by the authors.The results show that the proposed algorithm reduces the power consumption by 85.37% and the SLA violation rate decreases by a factor of 16.79% compared to the previous optimal algorithm.Therefore,the algorithm proposed in this paper in combination to ensure maximum performance and quality of service as soon as possible to develop virtual machine migration brings the power consumption is reduced,the power consumption and quality of service center has a certain effect on improvement of cloud computing.