A performance analysis of Xen and KVM hypervisors for hosting the Xen Worlds Project

Virtualization of the operating system has become an important consideration in the cloud, corporate data center, and academia. With the multitude of available virtualization platforms, careful consideration is needed for selecting the right solution for a specific virtualization application. This research focuses on an analysis of two open source virtualization platforms or hypervisors: Xen and Kernel-based Virtual Machine (KVM). Evaluations are conducted on the basis of overall performance and throughput, virtual machine performance isolation and scalability for use as a host for the Xen Worlds Project. In doing so, the existing Xen Worlds Project infrastructure, middleware, and virtual machines are migrated to KVM to provide a test bed for the evaluation using a benchmark suite and a set of scripts to simulate user behavior

Secure Virtualization and Multicore Platforms State-of-the-Art report

SVaM

FairGV: Fair and Fast GPU Virtualization

Increasingly high-performance computing (HPC) application developers are opting to use cloud resources due to higher availability. Virtualized GPUs would be an obvious and attractive option for HPC application developers using cloud hosting services. Unfortunately, existing GPU virtualization software is not ready to address fairness, utilization, and performance limitations associated with consolidating mixed HPC workloads. This paper presents FairGV, a radically redesigned GPU virtualization system that achieves system-wide weighted fair sharing and strong performance isolation in mixed workloads that use GPUs with variable degrees of intensity. To achieve its objectives, FairGV introduces a trap-less GPU processing architecture, a new fair queuing method integrated with work-conserving and GPU-centric co-scheduling polices, and a collaborative scheduling method for non-preemptive GPUs. Our prototype implementation achieves near ideal fairness (? 0.97 Min-Max Ratio) with little performance degradation (? 1.02 aggregated overhead) in a range of mixed HPC workloads that leverage GPUs

CyberGuarder: a virtualization security assurance architecture for green cloud computing

Cloud Computing, Green Computing, Virtualization, Virtual Security Appliance, Security Isolation