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Dissertations / Theses on the topic 'Hypervizor hypervisor'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Škultéty, Erik. "Aplikační rozhraní pro administraci projektu Libvirt." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2016. http://www.nusl.cz/ntk/nusl-255346.

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Tato práce se zabývá problematikou virtualizace, konkrétně virtualizační knihovnou libvirt, cílem které je správa virtuálních strojů a podpora různých typů hypervizorů a virtualizačních řešení jednotným způsobem transparentním pro uživatele. Podstatná část funkcionality knihovny libvirt je na pozadí implementována formou démona libvirtd. Ačkoliv libvirtd démon poskytuje služby pro správu virtuálních strojů, neumožňuje správu sebe samého, kromě změn hodnot parametrů v konfiguračním souboru. Pro změnu nastavení je pak standardním přístupem změna v konfiguračním souboru a následný restart démona.

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Rybák, Martin. "Konsolidace serverů za použití virtualizace." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-77173.

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The thesis deals with the topic of complexity of current IT. As a result, the consolidation of servers using virtualization is the answer to permanently growing complexity of server infrastructure. The thesis summarizes the basic aspects of this issue, compares the contributions and tries to analyze problems which can emerge. Further, it points a way of consolidation journey, compares different types of virtualization and elaborates the contributions of virtualization for corporate IS/ICT and its flexibility of solution. It analyzes present state of the market with virtualization tools, descri

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3

Krempa, Peter. "Analysis of Entropy Levels in the Entropy Pool of Random Number Generator." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236179.

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V informatice je pojem entropie obvykle znám jako nahodný proud dat. Tato práce krátce shrnuje metody generovaní nahodných dat a popisuje generátor náhodnych čísel, jež je obsažen v jádře operačního systému Linux. Dále se práce zabývá určením bitové rychlosti generování nahodných dat tímto generátorem ve virtualizovaném prosředí, které poskytují různé hypervizory. Práce popíše problémy nízkého výkonu generátory nahodných dat ve virtualním prostředí a navrhne postup pro jejich řešení. Poté je nastíňena implementace navržených postupů, které je podrobena testům a její vysledky jsou porovnány

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Isenstierna, Tobias, and Stefan Popovic. "Computer systems in airborne radar : Virtualization and load balancing of nodes." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18300.

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Introduction. For hardware used in radar systems of today, technology is evolving in an increasing rate. For existing software in radar systems, relying on specific drivers or hardware, this quickly becomes a problem. When hardware required is no longer produced or outdated, compatibility problems emerges between the new hardware and existing software. This research will focus on exploring if the virtualization technology can be helpful in solving this problem. Would it be possible to address the compatibility problem with the help of hypervisor solutions, while also maintaining high performan

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Cardace, Antonio. "UMView, a Userspace Hypervisor Implementation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13184/.

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UMView is a partial virtual machine and userspace hypervisor capable of intercepting system calls and modifying their behavior according to the calling process' view. In order to provide flexibility and modularity UMView supports modules loadable at runtime using a plugin architecture. UMView in particular is the implementation of the View-OS concept which negates the global view assumption which is so radically established in the world of OSes and virtualization.

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6

Klemperer, Peter Friedrich. "Efficient Hypervisor Based Malware Detection." Research Showcase @ CMU, 2014. http://repository.cmu.edu/dissertations/466.

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Recent years have seen an uptick in master boot record (MBR) based rootkits that load before the Windows operating system and subvert the operating system’s own procedures. As such, MBR rootkits are difficult to counter with operating system-based antivirus software that runs at the same privilege-level as the rookits. Hypervisors operate at a higher privilege level than the guests they manage, creating a high-ground position in the host. This high-ground position can be exploited to perform security checks on the virtual machine guests where the checking software is isolated from guest-based

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7

McAdams, Sean. "Virtualization Components of the Modern Hypervisor." UNF Digital Commons, 2015. http://digitalcommons.unf.edu/etd/599.

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Virtualization is the foundation on which cloud services build their business. It supports the infrastructure for the largest companies around the globe and is a key component for scaling software for the ever-growing technology industry. If companies decide to use virtualization as part of their infrastructure it is important for them to quickly and reliably have a way to choose a virtualization technology and tweak the performance of that technology to fit their intended usage. Unfortunately, while many papers exist discussing and testing the performance of various virtualization systems, mo

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Shah, Tawfiq M. "Radium: Secure Policy Engine in Hypervisor." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc804971/.

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The basis of today’s security systems is the trust and confidence that the system will behave as expected and are in a known good trusted state. The trust is built from hardware and software elements that generates a chain of trust that originates from a trusted known entity. Leveraging hardware, software and a mandatory access control policy technology is needed to create a trusted measurement environment. Employing a control layer (hypervisor or microkernel) with the ability to enforce a fine grained access control policy with hyper call granularity across multiple guest virtual domains can

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9

Suryanarayana, Vidya. "Impact of hypervisor cache locking on performance." Diss., Wichita State University, 2013. http://hdl.handle.net/10057/10616.

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Server virtualization has become the modern trend in various industries. Industries are resorting to the deployment of virtualized servers in order to cut the cost of additional, expensive hardware and consolidate the servers on minimal hardware for easier management and maintenance. Virtualized servers are often seen connected to disk arrays in many industries ranging from small to medium business to large data centers. In such a setup, assuring a low latency of data access from the disk array plays an important role in improving the performance and robustness of the overall system. Caching t

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10

Chan, Lawrence L. "Modeling virtualized application performance from hypervisor counters." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66404.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 61-64).<br>Managing a virtualized datacenter has grown more challenging, as each virtual machine's service level agreement (SLA) must be satisfied, when the service levels are generally inaccessible to the hypervisor. To aid in VM consolidation and service level assurance, we develop a modeling technique that generates accurate models of service level. Using only hypervisor counters as inputs, we

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11

Özcan, Mehmet Batuhan, and Gabriel Iro. "PARAVIRTUALIZATION IMPLEMENTATION IN UBUNTU WITH XEN HYPERVISOR." Thesis, Blekinge Tekniska Högskola, Institutionen för kommunikationssystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2011.

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With the growing need for efficiency, cost reduction, reduced disposition of outdated electronics components as well as scalable electronics components, and also reduced health effects of our daily usage of electronics components. Recent trend in technology has seen companies manufacturing these products thinking in the mentioned needs when manufacturing and virtualizations is one important aspect of it. The need to share resources, the need to use lesser workspace, the need to reduce cost of purchase and manufacturing are all part of achievements of virtualization techniques. For some people,

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Govindharajan, Hariprasad. "Porting Linux to a Hypervisor Based Embedded System." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-205568.

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Virtualization is used to improve overall system security, isolate the hardware and it properly manages the available system resources also. The main purpose of using virtualization in embedded systems is to increase the system security by isolating the underlying hardware and also by providing multiple secure execution environments for the guests. A hypervisor also called as the Virtual Machine monitor is responsible for mapping virtual resources to physical resources.Hypervisor based virtualization is gaining more popularity in embedded systems because of the security focussed mission critic

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Douglas, Heradon. "Thin Hypervisor-Based Security Architectures for Embedded Platforms." Thesis, SICS, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-23667.

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Virtualization has grown increasingly popular, thanks to its benefits of isolation, management, and utilization, supported by hardware advances. It is also receiving attention for its potential to support security, through hypervisor-based services and advanced protections supplied to guests. Today, virtualization is even making inroads in the embedded space, and embedded systems, with their security needs, have already started to benefit from virtualization’s security potential. In this thesis, we investigate the possibilities for thin hypervisor-based security on embedded platforms. In addit

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Hugo, Andra-Ecaterina. "Composability of parallel codes on heterogeneous architectures." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0373/document.

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Pour répondre aux besoins de précision et d'efficacité des simulations scientifiques, la communauté du Calcul Haute Performance augmente progressivement les demandes en terme de parallélisme, rajoutant ainsi un besoin croissant de réutiliser les bibliothèques parallèles optimisées pour les architectures complexes.L'utilisation simultanée de plusieurs bibliothèques de calcul parallèle au sein d'une application soulève bien souvent des problèmes d 'efficacité. En compétition pour l'obtention des ressources, les routines parallèles, pourtant optimisées, se gênent et l'on voit alors apparaître des

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Bolignano, Pauline. "Formal models and verification of memory management in a hypervisor." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S026/document.

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Un hyperviseur est un logiciel qui virtualise les ressources d'une machine physique pour permettre à plusieurs systèmes d'exploitation invités de s'exécuter simultanément dessus. L'hyperviseur étant le gestionnaire des ressources, un bug peut être critique pour les systèmes invités. Dans cette thèse nous nous intéressons aux propriétés d'isolation de la mémoire d'un hyperviseur de type 1, qui virtualise la mémoire en utilisant des Shadow Page Tables. Plus précisément, nous présentons un modèle concret et un modèle abstrait de l'hyperviseur, et nous prouvons formellement que les systèmes d'expl

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Madhugiri, Shamsundar Abhiram. "Probability based cache replacement algorithm for the hypervisor cache." Thesis, Wichita State University, 2012. http://hdl.handle.net/10057/5532.

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Virtualization is one of the key technologies which help in server consolidation, disaster recovery, and dynamic load balancing. The ratio of virtual machine to physical machine can be as high as 1:10, and this makes caching a key parameter, which affects the performance of Virtualization. Researchers have proposed the idea of having an exclusive hypervisor cache at the Virtual Machine Monitor (VMM) which could ease congestion and also improve the performance of the caching mechanism. Traditionally the Least Recently Used (LRU) algorithm is the cache replacement policy used in most caches. Thi

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Nyquist, Johan, and Alexander Manfredsson. "Jämförelse av Hypervisor & Zoner : Belastningstester vid drift av webbservrar." Thesis, Linnéuniversitetet, Institutionen för datavetenskap (DV), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28576.

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Virtualisering av datorer rent generellt innebär att man delar upp hela eller delar av enmaskinkonfiguration i flera exekveringsmiljöer. Det är inte bara datorn i sig som kanvirtualiseras utan även delar av det, såsom minnen, lagring och nätverk. Virtualiseringanvänds ofta för att kunna nyttja systemets resurser mer effektivt. En hypervisorfungerar som ett lager mellan operativsystemet och den underliggande hårdvaran. Meden hypervisor har virtuella maskiner sitt egna operativsystems kärna. En annan tekniksom bortser från detta mellanlager kallas zoner. Zoner är en naturlig del avoperativsystem

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Evripidou, Christos. "Scheduling for mixed-criticality hypervisor systems in the automotive domain." Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/20380/.

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This thesis focuses on scheduling for hypervisor systems in the automotive domain. Current practices are primarily implementation-agnostic or are limited by lack of visibility during the execution of partitions. The tasks executed within the partitions are classified as event-triggered or time-triggered. A scheduling model is developed using a pair of a deferrable server and a periodic server per partition to provide low latency for event-triggered tasks and maximising utilisation. The developed approach enforces temporal isolation between partitions and ensures that time-triggered tasks do no

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Do, Viktor. "Security Services on an Optimized Thin Hypervisor for Embedded Systems." Thesis, SICS, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-23605.

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Virtualization has been used in computer servers for a long time as a means to improve utilization, isolation and management. In recent years, embedded devices have become more powerful, increasingly connected and able to run applications on open source commodity operating systems. It only seems natural to apply these virtualization techniques on embedded systems, but with another objective. In computer servers, the main goal was to share the powerful computers with multiple guests to maximize utilization. In embedded systems the needs are different. Instead of utilization, virtualization can

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Davidsson, Göran. "Evaluation of a Hypervisor Performance in a Distributed Embedded System." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-31817.

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In modern industrial systems cloud computing plays an important role. Using this technology services are given to customers more efficiently with respect to cost and performance. The main idea of using cloud is that a platform is partitioned among several end users providing a complete isolation among the services. Therefore, the resources are used more effectively instead of assigning a complete platform for only one end user. In order to provide such a partitioning among the services several techniques are already being used. One of the prominent techniques is virtualization. Virtualization

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Zhang, Yu. "Performance Improvement of Hypervisors for HPC Workload." Universitätsverlag Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A31825.

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The virtualization technology has many excellent features beneficial for today’s high-performance computing (HPC). It enables more flexible and effective utilization of the computing resources. However, a major barrier for its wide acceptance in HPC domain lies in the relative large performance loss for workloads. Of the major performance-influencing factors, memory management subsystem for virtual machines is a potential source of performance loss. Many efforts have been invested in seeking the solutions to reduce the performance overhead in guest memory address translation process. This wo

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Mayap, Kamga Christine. "Gestion de ressources de façon "éco-énergétique" dans un système virtualisé : application à l'ordonnanceur de marchines virtuelles." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/11979/1/Mayap_Kamga.pdf.

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Face au coût de la gestion locale des infrastructures informatiques, de nombreuses entreprises ont décidé de la faire gérer par des fournisseurs externes. Ces derniers, connus sous le nom de IaaS (Infrastructure as a Service), mettent des ressources à la disposition des entreprises sous forme de machine virtuelle (VM - Virtual Machine). Ainsi, les entreprises n'utilisent qu'un nombre limité de machines virtuelles capables de satisfaire leur besoin. Ce qui contribue à la réduction des coûts de l'infrastructure informatique des entreprises clientes. Cependant, cette externalisation soulève pour

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SASANK, HYDERKHAN. "Performance analysis of TCP in KVM virtualized environment." Thesis, Blekinge Tekniska Högskola, Institutionen för kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-10793.

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The requirement of high quality services is increasing day by day. So, in order to meet up with this requirement new technologies are being developed one of them being virtualization. The main agenda of introducing virtualization is that though virtualization needs more powerful devices to run the hypervisor, the technique also helps to increase consolidation which makes efficient use of resources like increase in the CPU utilization. The virtualization technique helps us to run more VM’s (Virtual Machine) on the same platform i.e. on the same hypervisor. In virtualization as number of VM’s sh

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Chiba, Daniel Juzer. "Optimizing Boot Times and Enhancing Binary Compatibility for Unikernels." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/88865.

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Unikernels are lightweight, single-purpose virtual machines designed for the cloud. They provide enhanced security, minimal resource utilisation, fast boot times, and the ability to optimize performance for the target application. Despite their numerous advantages, unikernels face significant barriers to their widespread adoption. We identify two such obstacles as unscalable boot procedures in hypervisors and the difficulty in porting native applications to unikernel models. This work presents a solution for the first based on the popular Xen hypervisor, and demonstrates a significant performa

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Kinchla, Brendan. "Forensic recovery of evidence from deleted VMware vSphere Hypervisor virtual machines." Thesis, Utica College, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1587159.

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<p> The purpose of this research was to analyze the potential for recovering evidence from deleted VMware vSphere Hypervisor (ESXi) virtual machines (VMs). There exists an absence of scholarly research on the topic of deleted VM forensic recovery. Research dedicated to forensic recovery of ESXi VMs and VMware’s VM file system (VMFS) is nearly non -existent. This paper examined techniques to recover deleted ESXi VMs to a state where examination for forensic artifacts of user activity can occur. The paper examined the disk-provisioning methods for allocation of virtual disk files and the c

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Sridharan, Suganya. "A Performance Comparison of Hypervisors for Cloud Computing." UNF Digital Commons, 2012. http://digitalcommons.unf.edu/etd/269.

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The virtualization of IT infrastructure enables the consolidation and pooling of IT resources so that they can be shared over diverse applications to offset the limitation of shrinking resources and growing business needs. Virtualization provides a logical abstraction of physical computing resources and creates computing environments that are not restricted by physical configuration or implementation. Virtualization is very important for cloud computing because the delivery of services is simplified by providing a platform for optimizing complex IT resources in a scalable manner, which makes c

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Alndawi, Tara. "Replacing Virtual Machines and Hypervisors with Container Solutions." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-54607.

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We live in a world that is constantly evolving where new technologies and innovations are being introduced. This progress partly results in developing new technologies and also in the improvement of the current ones. Docker containers are a virtualization method that is one of these new technologies that has become a hot topic around the world as it is said to be a better alternative to today's current virtual machines. One of the aspects that has contributed to this statement is the difference from virtual machines where containers isolate processes from each other and not the entire operatin

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Mylar, Balasubramanya Karthik. "Enhancement of cache utilization by isolation and thin provisioning of hypervisor cache." Thesis, Wichita State University, 2012. http://hdl.handle.net/10057/5535.

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Storage resources are being consolidated and have led to the increased demand in sharing storage, depending on the type of application or class of customers. In such a scenario, cache consolidation becomes increasingly necessary. An analysis of cache utilization at various levels in a Storage Area Network such as the server cache, the virtual machine cache, and the array controller cache was done, drawing conclusions from the response time and execution time. A proposal is made for dynamic cache allocation algorithm in a virtualization environment, which takes into account the usage trends and

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Kärnä, P. (Perttu). "Performance effects on servers using containers in comparison to hypervisor based virtualisation." Bachelor's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201805312378.

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The current direction of web-based software is evolving has brought many challenges regarding locations, scalability, maintainability and performance. In most of the cases tiny differences in performance are not really important since the user base of the software may not be remarkably high. However, when the user base of the system expand and the stress of the system has high peaks, smaller things start to have meaning in the software and infrastructure. This paper addresses the performance differences between todays usual web software deployment solutions, containers and VMs. This study i

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Bard, Robin, and Simon Banasik. "En prestanda- och funktionsanalys av Hypervisors för molnbaserade datacenter." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20491.

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I dagens informationssamhälle pågår en växande trend av molnbaserade tjänster. Vid implementering av molnbaserade tjänster används metoden Virtualisering. Denna metod minskar behovet av antal fysiska datorsystem i ett datacenter. Vilket har en positiv miljöpåverkan eftersom energikonsumtionen minskar när hårdvaruresurser kan utnyttjas till sin fulla kapacitet. Molnbaserade tjänster skapar samhällsnytta då nya aktörer utan teknisk bakgrundskunskap snabbt kan komma igång med verksamhetsberoende tjänster. För tillämpning av Virtualisering används en så kallad Hypervisor vars uppgift är att distri

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Chapman, Matthew Computer Science &amp Engineering Faculty of Engineering UNSW. "vNUMA: Virtual shared-memory multiprocessors." Publisher:University of New South Wales. Computer Science & Engineering, 2009. http://handle.unsw.edu.au/1959.4/42594.

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Shared memory systems, such as SMP and ccNUMA topologies, simplify programming and administration. On the other hand, systems without hardware support for shared memory, such as clusters of commodity workstations, are commonly used due to cost and flexibility considerations. In this thesis, virtualisation is proposed as a technique that can bridge the gap between these architectures. The resulting system, vNUMA, is a hypervisor with a unique feature: it provides the illusion of shared memory across separate nodes on a fast network. This allows a cluster of workstations to be transformed in

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Sung, Mincheol. "Design and Implementation of a Network Server in LibrettOS." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/87066.

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Traditional network stacks in monolithic kernels have reliability and security concerns. Any fault in a network stack affects the entire system owing to lack of isolation in the monolithic kernel. Moreover, the large code size of the network stack enlarges the attack surface of the system. A multiserver OS design solves this problem. In contrast to the traditional network stack, a multiserver OS pushes the network stack into the network server as a user process, which performs three enhancements: (i) allows the network server to run in user mode while having its own address space and isolating

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Jing, Wei. "Performance Isolation for Mixed Criticality Real-time System on Multicore with Xen Hypervisor." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-193603.

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Multicore processors have imported the powerful computing capacity to real-time systems, allowing the multi-task execution on the co-running cores. Meanwhile, the competition for the shared resources among the on-die cores brings the side-effects which highly degrades the performance of single cores and puts the real-time requirements in danger. This thesis work is focused on addressing the memory access contentions on the real-time systems with mixed-criticality. A throttling algorithm is designed to control the memory access flows from the interfering side, securing the deadlines of critical

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Nanavati, Mihir Sudarshan. "Breaking up is hard to do : security and functionality in a commodity hypervisor." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/35591.

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Virtualization platforms have grown with an increasing demand for new technologies, with the modern enterprise-ready virtualization platform being a complex, feature-rich piece of software. Despite the small size of hypervisors, the trusted computing base (TCB) of most enterprise platforms is larger than that of most monolithic commodity operating systems. Several key components of the Xen platform reside in a special, highly-privileged virtual machine or the “Control VM”. We present Xoar, a modified version of the Xen platform that retrofits the modularity and isolation principles championed

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Maus, Stefan [Verfasser], and Andreas [Akademischer Betreuer] Podelski. "Verification of hypervisor subroutines written in Assembler = Verifikation von Hypervisorunterrutinen, geschrieben in Assembler." Freiburg : Universität, 2011. http://d-nb.info/1114828963/34.

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Schwarz, Oliver. "No Hypervisor Is an Island : System-wide Isolation Guarantees for Low Level Code." Doctoral thesis, KTH, Teoretisk datalogi, TCS, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192466.

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The times when malware was mostly written by curious teenagers are long gone. Nowadays, threats come from criminals, competitors, and government agencies. Some of them are very skilled and very targeted in their attacks. At the same time, our devices – for instance mobile phones and TVs – have become more complex, connected, and open for the execution of third-party software. Operating systems should separate untrusted software from confidential data and critical services. But their vulnerabilities often allow malware to break the separation and isolation they are designed to provide. To stren

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Sundblad, Anton, and Gustaf Brunberg. "Secure hypervisor versus trusted execution environment : Security analysis for mobile fingerprint identification applications." Thesis, Linköpings universitet, Databas och informationsteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-139227.

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Fingerprint identification is becoming increasingly popular as a means of authentication for handheld devices of different kinds. In order to secure such an authentication solution it is common to use a TEE implementation. This thesis examines the possibility of replacing a TEE with a hypervisor-based solution instead, with the intention of keeping the same security features that a TEE can offer. To carry out the evaluation a suitable method is constructed. This method makes use of fault trees to be able to find possible vulnerabilities in both systems, and these vulnerabilities are then docum

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Suryanarayana, Vidya Rao. "Credit scheduling and prefetching in hypervisors using Hidden Markov Models." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3749.

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The advances in storage technologies like storage area networking, virtualization of servers and storage have revolutionized the storage of the explosive data of modern times. With such technologies, resource consolidation has become an increasingly easy task to accomplish which has in turn simplified the access of remote data. Recent researches in hardware has boosted the capacity of drives and the hard disks have become very inexpensive than before. However, with such an increase in the storage technologies, there come some bottlenecks in terms of performance and interoperability. When it co

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Tengvall, Martin. "Servervirtualisering : En jämförelse av hypervisorer." Thesis, University of Skövde, School of Humanities and Informatics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4060.

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<p>Virtualisering av servrar är på frammarsch och ser ut att bli ett mer och mer frekvent inslag i datacenter världen över. När virtualisering ska införas i en organisation eller företag är det därför viktigt att veta om sina behov och därifrån sedan välja en virtualiseringslösning som passar.Denna rapport presenterar en jämförelse av de tre hypervisorer som är ledande på marknaden för virtualisering; VMware ESXi, Citrix XenServer och Microsoft Hyper-V. Den första delen av jämförelsen innefattar granskning av funktionalitet hos hypervisorerna, så som stöd för gästoperativsystem och hårdvarustö

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Kovalev, Mikhail [Verfasser], and Wolfgang J. [Akademischer Betreuer] Paul. "TLB virtualization in the context of hypervisor verification / Mikhail Kovalev. Betreuer: Wolfgang J. Paul." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2013. http://d-nb.info/1052903002/34.

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Bavelski, Alexei. "On the Performance of the Solaris Operating System under the Xen Security-enabled Hypervisor." Thesis, Linköping University, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9148.

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<p>This thesis presents an evaluation of the Solaris version of the Xen virtual machine monitor and a comparison of its performance to the performance of Solaris Containers under similar conditions. Xen is a virtual machine monitor, based on the paravirtualization approach, which provides an instruction set different to the native machine environment and therefore requires modifications to the guest operating systems. Solaris Zones is an operating system-level virtualization technology that is part of the Solaris OS. Furthermore, we provide a basic performance evaluation of the security module

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Castagnoli, Carlo. "Cloud Computing: gli Hypervisor e la funzionalità di Live Migration nelle Infrastructure as a Service." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/1856/.

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Fantini, Alessandro. "Virtualization technologies from hypervisors to containers: overview, security considerations, and performance comparisons." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12846/.

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In un'epoca in cui quasi tutte le persone utilizzano quotidianamente applicazioni basate su cloud senza nemmeno farci caso e le organizzazioni del settore IT stanno investendo notevoli risorse in questo campo, non tutti sanno che il cloud computing non sarebbe stato possibile senza la virtualizzazione, una tecnica software che ha le sue radici nei primi anni sessanta. Lo scopo di questa tesi è fornire una panoramica delle tecnologie di virtualizzazione, dalla virtualizzazione hardware e gli hypervisor fino alla virtualizzazione a livello di sistema operativo basata su container, analizzare le

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Vitner, Petr. "Instalace a konfigurace Octave výpočetního clusteru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220659.

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This paper explores the possibilities and tools for creating High-Performace Computing cluster. It contains a project for his creation and a detailed description of the setup and configuration in a virtual environment.

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Lipták, Roman. "Virtualizace a optimalizace IT infrastruktury ve společnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2019. http://www.nusl.cz/ntk/nusl-399752.

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Master’s thesis deals with the use of virtualization and consolidation technologies in order to optimize IT infrastructure in a selected company. The analysis contains current state of IT infrastructure and requirements for future upgrade. The theoretical part contains description of technologies and procedures used in virtualization and consolidation. Subsequently, the proposal of optimization and expansion of IT equipment is created together with management, implementation and economic evaluation of the solution.

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Sheinidashtegol, Pezhman. "Impact of DDoS Attack on the Three Common HypervisorS(Xen, KVM, Virtual Box)." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1646.

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Cloud computing is a technology of inter-connected servers and resources that use virtualization to utilize the resources, flexibility, and scalability. Cloud computing is accessible through the network. This accessibility and utilization have its own benefit and drawbacks. Utilization and scalability make this technology more economic and affordable for even small businesses. Flexibility drastically reduces the risk of starting businesses. Accessibility allows cloud customers not to be restricted in a specific location until they could have access to the network, and in most cases through the

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Montironi, Adolfo Angel. "Digital Forensic Acquisition of Virtual Private Servers Hosted in Cloud Providers that Use KVM as a Hypervisor." Thesis, Purdue University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10845501.

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<p> Kernel-based Virtual Machine (KVM) is one of the most popular hypervisors used by cloud providers to offer virtual private servers (VPSs) to their customers. A VPS is just a virtual machine (VM) hired and controlled by a customer but hosted in the cloud provider infrastructure. In spite of the fact that the usage of VPS is popular and will continue to grow in the future, it is rare to find technical publications in the digital forensic field related to the acquisition process of a VPS involved in a crime. For this research, four VMs were created in a KVM virtualization node, simulating fou

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Peiró, Frasquet Salvador. "Metodología para hipervisores seguros utilizando técnicas de validación formal." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/63152.

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[EN] The availability of new processors with more processing power for embedded systems has raised the development of applications that tackle problems of greater complexity. Currently, the embedded applications have more features, and as a consequence, more complexity. For this reason, there exists a growing interest in allowing the secure execution of multiple applications that share a single processor and memory. In this context, partitioned system architectures based on hypervisors have evolved as an adequate solution to build secure systems. One of the main challenges in the construction

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Thierry, Philippe. "Systèmes véhiculaires à domaines de sécurité et de criticité multiples : une passerelle systronique temps réel." Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1102/document.

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De nos jours, les véhicules intègrent de plus en plus de systèmes interconnectés. Ces systèmes ont des fonctions aussi nombreuses que complexes et sont soumis à des contraintes de sureté de fonctionnement (dont le temps réel) mais également de plus en plus de sécurité. Avec l'apparition des véhicules connectés, il devient nécessaire de faire communiquer ces différents systèmes, tant pour les gérer au niveau véhiculaire que potentiellement à distance. Faire communiquer ces différents réseaux, a fortiori dans les véhicules militaires, implique la prise en compte de diverses contraintes. Ces cont

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Mahmud, Nesredin. "Automated Orchestra for Industrial Automation on Virtualized Multicore Environment." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-23672.

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Industrial control systems are applied in many areas e.g., motion control for industrial robotics, process control of large plants such as in the area of oil and gas, and in large national power grids. Since the last decade with advancement and adoption of virtualization and multicore technology (e.g., Virtual Monitoring Machine, cloud computing, server virtualization, application virtualization), IT systems, automation industries have benefited from low investment, effective system management and high service availability. However, virtualization and multicore technologies have posed a seriou

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