Performance Evaluation in a Cloud with the Provisioning of Different Resources Configurations

Abstract

Abstract-Cloud computing is a computing style where resource providers can offer on-demand services in a transparent way and clients usually pay as they go. It introduces a new level of flexibility and scalability for IT users addressing challenges such as the rapid change in IT and the need to reduce cost and time of infrastructure management. However, to be able to offer QoS guarantees without limiting the number of accepted requests, providers must be able to dynamically adjust the available resources to serve requests. This dynamic resource management is not a trivial task, bringing its own challenges related to workload and performance modelling, and deployment and monitoring of applications on virtualised IT resources. An efficient mapping between resources and applications ensures workload balancing and good resource utilization and allows to meet the QoS levels required by clients. This paper presents a performance evaluation that considers different resource configurations in a cloud environment to define which dimension of resource scaling has real impact on client applications.

Impacto das rajadas no desempenho de serviços executados em ambientes em nuvens

“…Como a Internet é um ambiente muito dinâmico, prover QoS para clientes em um ambiente de computação em nuvem não é uma tarefa trivial, uma vez que se tem a influência de muitos aspectos do sistema que utiliza esse modelo de implementação (Sakellari e Loukas, 2013) (Batista et al, 2014). Um ponto importante a ser considerado é a natureza imprevisível da carga de trabalho submetida à nuvem, onde os recursos precisam ser monitorados e adaptados continuamente a fim de assegurar um nível adequado de QoS (Cao et al, 2009) (ur Rehman et al, 2015.…”

Τεχνολογίες Εικονικοποίησης Και Κατανεμημένη Επεξεργασία Σε Υπολογιστικά Νέφη

“…[78], [79], [80], [81], [82], [83] [84], [85] και [86] ). Στη δική μας μελέτη εστιάζουμε σε τρεις δείκτες απόδοσης, τον χρόνο εκτέλεσης, τη χρησιμοποίηση των πόρων και την κλιμακωσιμότητα.…”