Melhorando o balanceamento de carga em ambientes virtualizados usando a correlação de Pearson
Moraes Filho, Nilson Rubens de
MetadataShow full item record
Virtualization is one of the foundations of cloud computing as it allows better utilization of computing resources in a data center. There are different virtualization approaches that offer similar functionality, but with different levels of abstraction and methods. In this sense we can mention the use of Virtual Machines and containers. We define Virtual Element (VE) as a virtual machine or a container, and we will use this concept to make our load balancing approach generic. Load balancing can be achieved through live migration of VEs, reducing energy consumption, enabling better distribution of computational resources and allowing customers to move VEs from a cloud provider to another one that may offer better SLA or costs. There are some methods that addresses the load balancing improvement in a data center. One of them applies the Pearson correlation coefficient related to CPU usage, to migrate VEs from an overloaded host to another that have better availability of resources. The Pearson correlation coefficient estimates the dependency level between quantities. Yet, live migration is a virtualization feature that allows a VE to be transferred from one equipment to another, keeping the active processes running. However, to migrate a VE that has strong dependency with the internal network traffic from a host, can create an increase in the overall network consumption due to the migration of the VE to another server, topologically distant from the current host. This dissertation defines a heuristic that has as objective improve the migration decision process of VEs. The heuristic applies Pearson's correlation coefficient and takes in consideration not only CPU consumption, but also the internal network traffic between VEs. Results shown that the application of the heuristic improved the decision process in at least 18% compared to a method that considers only CPU correlation coefficient.
Showing items related by title, author, creator and subject.
Vaz, Thaís Emília Rodrigues; http://lattes.cnpq.br/3443220069501207 (Universidade Federal de São Carlos, UFSCar, Programa de Pós-graduação em Educação, Câmpus São Carlos, 14/12/2017)Cyberbullying is characterized by virtual violence that spreads through the technological media connected to the Internet, in which there is the distribution of repetitive episodes of exposure, humiliation, aggression and ...
Análise da resposta da frequência cardíaca de adultos jovens saudáveis durante performance em um jogo de realidade virtual de imersão Barbosa, Cláudia Daniele Pestana; http://lattes.cnpq.br/4807690742238071 (Universidade Federal de São Carlos, UFSCar, Programa de Pós-graduação em Terapia Ocupacional, , 07/02/2013)The rehabilitation of people with various disorders has been implemented with the technological advances of virtual reality when using the games immersion in therapeutic programs in clinics and hospitals. However, no studies ...
Falvo, Marcio Rodrigo; http://lattes.cnpq.br/1973896219018141 (Universidade Federal de São Carlos, UFSCar, Programa de Pós-graduação em Ciência da Computação, , 25/02/2014)A server cluster connected to the Internet can support virtual desktops in a virtual computing environment. Each user can have his/her own virtual desktop, accessed through the Internet by means of devices such as laptop, ...