High availability is a critical feature for service clusters and cloud computing, and is often considered more valuable than performance. One commonly used technique to enhance the availability is live migration, which replicates services based on virtualization technology. However, continuous live migration with checkpointing will introduce significant overhead. In this paper, we present a lig...

The field of live VM (virtual machine) migration has been a hotspot problem in green cloud computing. Live VM migration problem is divided into two research aspects: live VM migration mechanism and live VM migration policy. In the meanwhile, with the development of energy-aware computing, we have focused on the VM placement selection of live migration, namely live VM migration policy for energy...

Live virtual machine (VM) migration is a technique for transferring an active VM from one physical host to another without disrupting the VM. In principle, live VM migration enables dynamic resource requirements to be matched with available physical resources, leading to better performance and reduced energy consumption. However, in practice, the resource consumption and latency of live VM migr...

Side and covert channels (referred to collectively as illicit channels) are an insidious affliction of high security systems brought about by the unwanted and unregulated sharing of state amongst processes. Illicit channels can be effectively broken through isolation, which limits the degree by which processes can interact. The drawback of using isolation as a general mitigation against illicit...

Virtualization is an innovation that has widely been utilized in modern data centers for cloud computing to realize energyefficient operations of servers. Virtual machine (VM) migration brings multiple benefits such as resource distribution and energy aware consolidation. Server consolidation achieves energy efficiency by enabling multiple instances of operating systems to run simultaneously on...

ion Level Feature Existing Clouds Application monitoring Auto-scaling Non-live migration Mutable Hypervisor Page sharing [81, 145] Overdriver [154] Revirt [65] Remus [61] Live migration [57] Cross-provider live migration Exposed Hardware vSnoop [92] Superpages [121] Page coloring [93] Non fate-sharing Unsupported paravirtualization Table 3.1: Cloud abstractions and extensions they enable maxima...

Workload consolidation is a technique applied to achieve energy efficiency in data centres. It can be realized via live migration of virtual machines (VMs) between physical servers with the aim to power off idle servers and thus, save energy. In spite of innumerable benefits, the VM migration process introduces additional costs in terms of migration time and the energy overhead. This paper inve...

Live migration allows a running operating system (OS) to be moved another physical machine with negligible downtime. Unfortunately, live is not supported in bare-metal clouds, which lease machines rather than virtual offer maximum hardware performance. Since clouds have no virtualization software, implementing difficult. Previous studies proposed OS-level migration; however, prevent user interv...