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Literatura académica sobre el tema "Conteneurs (informatique)"
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Tesis sobre el tema "Conteneurs (informatique)"
Nguyen, Thuy Linh. "Fast delivery of virtual machines and containers : understanding and optimizing the boot operation". Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2019. http://www.theses.fr/2019IMTA0147/document.
Texto completoThe provisioning process of a VirtualMachine (VM) or a container is a succession of three complex stages : (i) scheduling theVM / Container to an appropriate compute node ;(ii) transferring the VM / Container image to that compute node from a repository ; (iii) and finally performing the VM / Container boot process. Depending on the properties of the client’s request and the status of the platform, each of these three phases can impact the total duration of the provisioning operation. While many works focused on optimizing the two first stages, only few works investigated the impact of the boot duration. This comes to us as a surprise as a preliminary study we conducted showed the boot time of a VM / Container can last up to a few minutes in high consolidated scenarios. To understand the major reasons for such overheads, we performed on top of Grid'5000 up to 15k experiments, booting VM / Containerunder different environmental conditions. The results showed that the most influential factor is the I/O operations. To accelerate the boot process, we defend in this thesis, the design of a dedicated mechanism to mitigate the number of generated I/O operations. We demonstrated the relevance of this proposal by discussing a first prototype entitled YOLO (You Only LoadOnce). Thanks to YOLO, the boot duration can be faster 2-13 times for VMs and 2 times for containers. Finally, it is noteworthy to mention that the way YOLO has been designed enables it to be easily applied to other types of virtualization (e.g., Xen) and containerization technologies
Laniel, Francis. "MemOpLight : vers une consolidation mémoire pour les conteneurs grâce à un retour applicatif". Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS372.
Texto completoNowadays, deploying and executing applications in the cloud is a reality. The cloud can not exist without virtualization. This concept consists of slicing physical machines into several sub-machines, isolated from one another, known as virtual machines. Recently, containers emerged as a viable alternative to virtual machines. Containers are lighter than virtual machines and bring the same isolation and security guarantees. Nonetheless, the isolation they offer is maybe too important. Indeed, existing mechanisms enforce memory isolation by ensuring that no container starves the others; however, they do not adapt to changes in workload. Thus, it is impossible to consolidate memory, i.e. to reclaim memory unused by some containers to make a better use of it. To answer this problem and ensure both isolation and consolidation, we introduce MemOpLight. This mechanism adapts to workload changes thanks to application feedback. Each container tells the kernel whether it has good or bad performance to guide memory reclaim. Memory is first reclaimed from containers with good performance in the hope that the others can improve their own performance. The idea is to find a balance where all containers have satisfying performance. MemOpLight increases container satisfactions by 13% compared to existing mechanisms
Villefranche, Laurent y Frédéric Serin. "Simulateur de gestion d'un terminal à conteneurs : simulation discrète par macro-processus et processus complementaires". Rouen, 1996. http://www.theses.fr/1996ROUES002.
Texto completoAl-Dhuraibi, Yahya. "Flexible framework for elasticity in cloud computing". Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I079/document.
Texto completoCloud computing has been gaining popularity and has received a great deal of attention from both industrial and academic worlds since it frees them from the burden and cost of managing local data centers. However, the main factor motivating the use of cloud is its ability to provide resources according to the customer needs or what is referred to as elasticity. Adapting cloud applications during their execution according to demand variation is a challenging task. In addition, cloud elasticity is diverse and heterogeneous because it encompasses different approaches, policies, purposes, etc. We are interested in investigating: How to overcome the problem of over-provisioning/under-provisioning? How to guaranty the resource availability and overcome the problems of heterogeneity and resource granularity? How to standardize, unify elasticity solutions and model its diversity at a high level of abstraction? In this thesis, we solved such challenges and we investigated many aspects of elasticity to manage efficiently the resources in the cloud. Three contributions are proposed. Firstly, an up-to-date state-of-the-art of the cloud elasticity, this state of art reviews different works related to elasticity for both Virtual Machines and containers. Secondly, ElasticDocker, an approach to manage container elasticity including vertical elasticity, live migration, and elasticity combination between different virtualization techniques. Thirdly, MoDEMO, a new unified standard-based, model-driven, highly extensible and reconfigurable framework that supports multiple elasticity policies, vertical and horizontal elasticity, different virtualization techniques and multiple cloud providers
Guzzo, Natale. "Facing the real challenges in wireless sensor network-based applications : an adaptative cross-layer self-organization WSN protocol". Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10190.
Texto completoWireless Sensor Networks (WSN) is one of the protagonists contributing to the evolution and the development of the Internet of Things (IoT). Several use cases can be found today in the different fields of the modern technology including the container shipping industry where containerized cargo accounts for about 60 percent of all world seaborne trade. In this context, TRAXENS developed a battery-powered device named TRAX-BOX designed to be attached to the freight containers in order to track and monitor the shipping goods along the whole supply chain. In this thesis, we present a new energy-efficient self-organizing WSN protocol stack named TRAX-NET designed to allow the TRAX-BOX devices to cooperate to deliver the sensed data to the TRAXENS platform.The results of simulations and field tests show that TRAX-NET well perform in the different scenarios in which it is supposed to operate and better fulfil the requirements of the assumed application in comparison with the existing schemes
Zaghdoud, Radhia. "Hybridation d’algorithme génétique pour les problèmes des véhicules intelligents autonomes : applications aux infrastructures portuaires de moyenne taille". Thesis, Ecole centrale de Lille, 2015. http://www.theses.fr/2015ECLI0023/document.
Texto completoThe objective of our work is to develop a container assignment system for intelligent autonomous vehicles (AIVS) in a container terminal. Given the complexity of this problem, it was proposed to decompose it into three problems: The problem of dispatching containers to AIVS, the AIVS routing problem and the problem of scheduling containers to queues of AIVS. To achieve this goal, we developed in the first phase, a static system for multi-objective problem to optimize the total duration of the containers transportation, the waiting time of vehicles at loading points and the equilibrium of working time between vehicles. The approach used was the genetic algorithm (GA). This approach was applied to optimize only the assignment operation without influence on the choice of the path traveled by each AIV. An extension of this work was then made to improve the results found. For this purpose, a comparative study was carried out between three approaches: The first approach is the AG, the second approach is the GA and the Dijkstra algorithm (DIJK) that was used to find the shortest path for each vehicle and the third approach is the AG and DIJK and heuristic (HEUR) which was proposed to choose the nearest vehicle of each container. The numerical study showed the best performance of the AG & DJK & HEUR approach over the other two approaches. In the second phase of our project, the robustness of our system in a dynamic environment has been studied. A delay of the arrival of a ship at the port or malfunction of one of any equipment of the port can cause a delay of one of the operations of loading or unloading process. This will affect the container assignment operation. The idea was to add new containers to vehicles that are already unavailable. The traffic can also cause a delay in arrival of the vehicle at the position of the container or the unavailability of one of the paths crossing point. These cases were investigated experimentally, numerical results showed the robustness of our approach to dynamic case
Bacou, Mathieu. "Performance et gestion de ressources dans un cloud multi-virtualisé". Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0042.
Texto completoCompanies use cloud computing to lower entry and usage costs of using information technologies as a resource. The main feature of cloud computing that enables these lower costs is the pooling of resources with other users. Pooling of resources is based on virtualization. The principle is to sell physical, concrete resources from a data-center as virtual, abstract resources. The core concern for both cloud providers and clients is the efficiency, on various axes, of the virtualization solution. The former wish to serve as many clients as possible with the given physical resources of the data-center. It puts an emphasis on the capability of the virtualization solution to allocate resources with limited waste. Another target for optimization is the power usage of the data-center. Efficient management of resources has a great effect on it. As for clients of cloud computing, they seek guarantees on performance, including predictability. Indeed, the virtualization solution must provide them with the same performance level despite abstraction of physical resources into virtual resources. Buying cloud resources as cheap as possible is also a priority. There are two main virtualization solutions: virtual machines and containers. Both have their own sets of benefits and drawbacks, on the axes of resource management and performance. However containers can be nested inside of virtual machines, thus building a multi-virtualized cloud. How best to use both solutions in this new environment? This thesis explores issues that arise from combining both virtualization solutions. It proposes new systems to gain better performance, to improve resource management and to provide cheaper cloud services using multi-virtualization. First, it describes a novel workload consolidation method to further reduce power usage ; second, an allocation algorithm for resources of containers that fixes their intrinsic issue of performance predictability ; and third, two joint systems that optimize multi-virtualized networking to improve performance and resource utilization, and save money on cloud usage. Theses works play at every level of nested virtualization in order to move the technology of multi-virtualization forward
Serin, Frédéric y Laurent Villefranche. "Simulateur de gestion d'un terminal à conteneur : gestion distribuée des ressources". Rouen, 1996. http://www.theses.fr/1996ROUES005.
Texto completoBenghalia, Abderaouf. "Modélisation et évaluation de la performance des terminaux portuaires". Thesis, Le Havre, 2015. http://www.theses.fr/2015LEHA0010/document.
Texto completoNowadays, maritime transport, in full evolution, plays a very important role in the economic world. Against this background, the different seaport supply chains entities must improve continuously their performance to remain competitive. In this thesis, we propose an approach called ECOGRAISIM for evaluating the performance of seaport supply chain. It combines ECOGRAI method and simulation to identify and to measure performance indicators. The originality of the ECOGRAISIM approach is to provide an additional step to show how to act on the system to be evaluated. In this approach, we focus on action variables and we propose a new step to achieve the performance control. Our research works concern the multimodal terminal of Le Havre seaport. We focus on the processes of handling and massified transfer of containers by rail shuttles. The goal is to obtain an efficient operating process for the multimodal terminal by comparing different scenarios of containers transfer according to the minimization of delays, costs and CO2 emissions
Şenel, Berat. "Container Orchestration for the Edge Cloud". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS202.
Texto completoThe pendulum again swings away from centralized IT infrastructure back towards decentralization, with the rise of edge computing. Besides resource-constrained devices that can only run tiny tasks, edge computing infrastructure consists of server-class compute nodes that are collocated with wireless base stations, complemented by servers in regional data centers. These compute nodes have cloud-like capabilities, and are thus able to run cloud-like workloads. Furthermore, many smart devices that support containerization and virtualization can also handle cloud-like workloads. The « containers as a service » (CaaS) service model, with its minimal overhead on compute nodes, is particularly well adapted to the less scalable cloud environment that is found at the edge, but cloud container orchestration systems have yet to catch up to the new edge cloud environment. This thesis shows a way forward for edge cloud container orchestration. We make our contributions in two primary ways: the reasoned conception of a set of empirically tested features to simplify and improve container orchestration at the edge, and the deployment of these features to provide EdgeNet, a sustainable container-based edge cloud testbed for the internet research community. We have built EdgeNet on Kubernetes, as it is open-source software that has become today’s de facto industry standard cloud container orchestration tool. The edge cloud requires multitenancy for the sharing of limited resources. However, this is not a Kubernetes-native feature, and a specific framework must be integrated into the tool to enable this functionality. Surveying the scientific literature on cloud multitenancy and existing frameworks to extend Kubernetes to offer multitenancy, we have identified three main approaches: (1) multi-instance through multiple clusters, (2) multi-instance through multiple control planes, and (3) single-instance native. Considering the resource constraints at the edge, we argue for and provide empirical evidence in favor of a single-instance multitenancy framework. Our design includes a lightweight mechanism for the federation of edge cloud compute clusters in which each local cluster implements our multitenancy framework, and a user gains access to federated resources through the local cluster that her local cloud operator provides. We further introduce several features and methods that adapt container orchestration for the edge cloud, such as a means to allow users to deploy workloads according to node location, and an in-cluster VPN that allows nodes to operate from behind NATs. We put these features into production through the EdgeNet testbed, a globally distributed compute cluster that is inherently less costly to deploy and maintain, and easier to document and to program than previous such testbeds