Optimizing Live Migration of Multiple Virtual Machines using Hybrid-Copy Algorithm

The cloud computing is able to provide disruptive services by allowing an enterprise to lease computing, storage, and network services. This shift brought new revenue models and challenges to cloud providers. The critical challenges among the list are to efficiently migrate multiple virtual machines (VMs) with minimum service interruptions with the cost estimation. In this work on live-migration performance is tested which motivates the need for a better multi-VM migration strategy. A Hybrid copy algorithm is proposed whose goal is to improve the performance by reducing the page faults and approximately estimates the cost as well as the power consumption of the tasks. It takes the best of both the traditional methods of live migration pre-copy and post-copy. Optimal bit rate assignment makes a viable and useful solution for improving the current live-migration implementations. The hybrid-copy algorithm is implemented on the Xeon platform.