国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

A new physical host status anomalous detection algorithm called PHSDA was proposed in this paper. PHSDA includes two phases, overloading host detection and under loading host detection. In overloading host detection, it used an iterative weighted linear regression method to determine two utilization thresholds and avoid performance degradation. In under loading host detection, PHSDA used a vector magnitude squared of multiple resources to consolidate active hosts. United with Subsequent strategy in virtual machine selection and virtual machine placement, a novel virtual machine migration model called PHSDA-MMT-BFD had been formed. PHSDA had been evaluated using CloudSim tools. Experimental results show that compared with benchmark VM migration models, energy consumption and numbers of VM migration had been reduced in PHSDA. The Qos of cloud service provider had been also promoted.