Although Juniper Networks has attempted to provide accurate information in this guide, Juniper Networks does not warrant or guarantee the accuracy of the information provided herein. Third party product descriptions and related technical details provided in this document are for information purposes only and such products are not supported by Juniper Networks. All information provided in this g...

Irene Zhang started her presentation by explaining that checkpointing is similar to “suspend,” but while taking a checkpoint, the virtual machine can continue its execution. Because checkpointing is used for fault tolerance, taking a checkpoint can be done quickly, in less than a few seconds; restoring from the checkpoint, although slow, hasn’t been a problem; however, recent applications, such...

Abstract. While harvesting existing resources for the grid is desirable, in practice it is rarely achieved due to heterogeneous environments, shortcomings of the middleware, and restrictive software specifications. Native virtualization allows us to increase the number of grid resources by exploiting resources otherwise not accessible. In this paper, we present a proof-of-concept implementation...

Bot-like malware has posed an immense threat to computer security. Bot detection is still a challenging task since bot developers are continuously adopting advanced techniques to make bots more stealthy. A typical bot exhibits three invariant features along its onset: (1) the startup of a bot is automatic without requiring any user actions; (2) a bot must establish a command and control channel...

A research and a pilot implementation of a monitoring architecture for multiple-cloud infrastructures of VMware, HyperV and OpenStack are presented. A standardized set of monitoring attributes is selected and an efficient architecture to support monitoring itself is implemented. Two different monitoring architectures and their interfaces are described. The pilot is implemented by using the less...

Virtualization technology has provided many benefits to organizations, but it cannot provide automation. This causes operational expenditure (OpEx) inefficiencies, which are solved by cloud computing (vCloud Director vApps). Organizations have adopted virtualization technology to reduce IT costs and meet business needs. In addition to improved CapEx efficiency, virtualization has enabled organi...

Interrupt coalescing is a proven technique for reducing CPU utilization when processing high IO rates in storage and networking controllers. Virtualization introduces a layer of virtual hardware whose interrupt rate can be controlled by the hypervisor. In this paper, we present the design and implementation of a virtual interrupt coalescing scheme for virtual SCSI hardware controllers in a hype...

Multiprocessor virtual machines (VMs) allow guest operating systems to use symmetric multiprocessing (SMP) in a VM. However, the use of SMP in a VM complicates CPU scheduling by the virtual machine monitor and can significantly increase the performance overhead of virtualization. This paper analyzes the performance of SMP virtualization used in two leading virtualization systems: VMware ESX 3.5...