Estudo exploratório sobre fontes de os jitter no kernel linux

• Autor(a) principal: Paulo Sobrinho, Elder Vicente de
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFU
• Texto Completo: https://repositorio.ufu.br/handle/123456789/12528; https://doi.org/10.14393/ufu.di.2012.279
• topic: Computação de alto desempenho; OS Jitter; Arquitetura de sistemas operacionais; Computação de alto desempenho; OS Jitter; Architecture of system operation; High performance computing; CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO

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.