Live migration of virtual machines based on DPDT

Abstract

Virtualization is a hot topic in current research. As one of the important applications of cloud computing, the live migration of virtual machine(VM) can move a VM from one host to another without shutting it down. The key of live migration is to reduce the total migration time and its downtime. This paper focuses on the optimization of live migration in Xen environment due to the default algorithm does not work well when memory pages are dirtied rapidly. Base on Xen source code, a DPDT(dirty page delayed transfer) algorithm has been designed. Later experiments show that the improved algorithm reduces the total migration time and downtime efficiently with a high dirtying page rate environment. © 2013 Springer-Verlag.