Abstract
Virtual Machines(VMs) refer to the software implementation of a computer that runs its own operating system and applications as if it is a physical machine. Live migration of VMs allows a server administrator to move a running virtual machine among different physical machines without disconnecting the client or application. Total migration time and downtime are two key performance metrics that the clients of a VM service care about the most, because they are concerned about service degradation and the duration for which the service is completely unavailable. Among the already existing approaches for live VM migration, pre-copy approach transfers VM in a manner that balances the requirements of minimizing both the downtime and the total migration time. But this approach is inefficient in the case when the page-dirtying rate is very high because the total migration time will also increase with it. We propose a method in which the migration time can be reduced by transferring the pages that are not recently used and by sending the log records of modifications instead of resending the dirty pages.
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