Improvement of Live Migration Mechanism for Virtual Machine Based on Pre-Copy

An Adaptive Bandwidth Algorithm is introduced in the pre-copy algorithm based on probability prediction. When dirty pages rate suddenly increases to a larger value, that algorithm could improve the transmission bandwidth to shorten transmission time. Experimental results show that the rate of dirty pages increase suddenly or is great, that strategy can improve the transmission bandwidth, shorten the total time of iterative transfer and downtime, so as to improve migration performance and quality service.