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- Building Low Cost Cloud Computing SystemsPublication . Ricardo Vardasca, PhD, ASIS, FRPSThe actual models of cloud computing are based in megalomaniac hardware solutions, being its implementation and maintenance unaffordable to the majority of service providers. The use of jail services is an alternative to current models of cloud computing based on virtualization. Models based in utilization of jail environments instead of the used virtualization systems will provide huge gains in terms of optimization of hardware resources at computation level and in terms of storage and energy consumption. In this paper it will be addressed the practical implementation of jail environments in real scenarios, which allows the visualization of areas where its application will be relevant and will make inevitable the redefinition of the models that are currently defined for cloud computing. In addition it will bring new opportunities in the development of support features for jail environments in the majority of operating systems.
- Performance of Jails versus Virtualization for Cloud Computing SolutionsPublication . Ricardo Vardasca, PhD, ASIS, FRPSThe existence of a virtualization layer within the cloud affects the resources optimization and the reduction of requirements of its implementation. In this publication the focus will be the use of jail environments, provided by the FreeBSD Operating System, which present a relevant set of features that can enhance the increase of performance. A set of data collection tests that allows measuring the degree of optimization obtainable in current models of cloud computing, based on the use of hypervisors tests, are presented. These tests proved that the increase in performance and optimization of resources is possible, bringing up the need to adapt the current models of cloud computing for the use of such solutions. However, this increase in performance, leads to a loss of flexibility of the usage of independent operating systems, which is not relevant to the model of cloud computing business.