Estudo exploratório sobre fontes de os jitter no kernel linux

• Ano de defesa: 2012
• Autor(a) principal: Paulo Sobrinho, Elder Vicente de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Ciência da Computação; Ciências Exatas e da Terra; UFU
• Palavras-chave em Português: Computação de alto desempenho; OS Jitter; Arquitetura de sistemas operacionais; Architecture of system operation; High performance computing; CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO
• Link de acesso: https://repositorio.ufu.br/handle/123456789/12528; https://doi.org/10.14393/ufu.di.2012.279

The OS Jitter phenomenon has been considered an important factor in high-performance distributed computing. In this thesis, we present the results of an experimental study that quantifies the effects of different sources of OS Jitter in the Linux operating system. We use the DOE method to conduct controlled experiments statistically planned. Differently than previous studies, we found that the processor topology, especially regarding the shared processor cache, has the most significant influence in terms of OS Jitter. Also, we found that in order to reduce the impact of OS Jitter on a given application, the number of computational phases in the algorithm is significantly more important than the number of distributed processes or compute nodes.