Use of virtualization in Infrastructure as a Service (IaaS) environments provides benefits to both users and providers: users can make use of resources following a pay-per-use model and negotiate performance guarantees, whereas providers can provide quick, scalable and hardware-fault tolerant service and also utilize resources efficiently and economically. With increased acceptance of virtualiz...

Future developments in AI and robotics, brain interfaces, the Internet and virtual and augmented reality, will make possible new types of integration of humans and machines which will change how we think, learn and live. This paper uses a story about a future scenario involving systems of this kind to respond to crises and disasters to explore the possibilities of collective intelligence and co...

For the last couple of years, due to ecological as well as economical reasons, energy efficiency of ICT has become a major issue. Leading manufacturers of IT equipment advertise with ”green” and energy-efficient products. Steadily increasing energy consumption in data centers [1], as well as high electricity costs prompt organizations, companies, and administration to decrease the energy consum...

Rapid growth of the IT industry has led to significant energy consumption in the last decade. Data centers swallow an enormous amount of electrical energy and have high operating costs and carbon dioxide excretions. In response to this, the dynamic consolidation of virtual machines (VMs) allows for efficient resource management and reduces power consumption through the live migration of VMs in ...

Multicore architectures are employed more and more in todays system. A main task of current operating systems is to equalize the load of each CPU’s core, it is accomplished by the migration policy of an operating system. Nevertheless, the migration policy of an operating system is mostly entangled in the kernel. Thus, migration policies of guest kernels running within virtual machines may contr...

Cloud data centers use virtualization technology to manage computing resources. Using a group of connected Virtual Machines (VMs), corresponding users can compute efficiently and effectively. It improves the utilization resources, thereby reducing hardware requirements. Repossession affected services requires VM-based infrastructure overhaul schemes. Clarifications concerning dedicated routing ...

It is well known that cloud computing has many potential advantages over traditional distributed systems. Many enterprises can build their own private cloud with open source infrastructure as a service (IaaS) frameworks. Since enterprise applications and data are migrating to private cloud, the performance of cloud computing environments is of utmost importance for both cloud providers and user...

Virtualization technology reduces cloud operational cost by increasing cloud resource utilization level. The incorporation of virtualization within cloud data centers can severely degrade cloud performance if not properly managed. Virtual machine (VM) migration is a method that assists cloud service providers to efficiently manage cloud resources while eliminating the need of human supervision....

Abstract Energy efficiency is an important issue for reducing environmental dissipation. efficient resource provisioning in cloud environments a challenging problem because of its dynamic nature and varied application workload characteristics. In the literature, live migration virtual machines (VMs) among servers commonly proposed to reduce energy consumption optimize usage, although it comes w...

We present the design and implementation of a system that enables trusted computing for an unlimited number of virtual machines on a single hardware platform. To this end, we virtualized the Trusted Platform Module (TPM). As a result, the TPM’s secure storage and cryptographic functions are available to operating systems and applications running in virtual machines. Our new facility supports hi...