Failure Detectors
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Redução dos efeitos negativos das suspeitas incorretas no algoritmo de consenso de Chandra e Toueg
Some protocols in distributed systems, such as atomic broadcast and semi-passive replication, are based on the consensus algorithm proposed by Chandra and Toueg. This algorithm is equipped with an unreliable failure detector. In asynchronous distributed systems, this type of detector can make mistakes by erroneously suspecting a process that is still running
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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2. Avaliação dos detectores de defeitos e sua influência nas operações de consenso / On the evaluation of failure detectors and their influence on consensus operations
Este trabalho relata observações e analises sobre como os detectores de defeitos influenciam as operação de consenso. O conceito dos detectores de defeitos é essencial para as operações de consenso em sistemas distribuídos assíncronos, uma vez que esses representam uma das (micas formas de sobrepujar as limitações impostas pela chamada Impossibili
Publicado em: 2010
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3. A New Approach to Reduce Control Messages in Failure Detectors / UMA NOVA ABORDAGEM PARA REDUÇÃO DE MENSAGENS DE CONTROLE EM DETECTORES DE DEFEITOS
An unreliable failure detector is a basic building block widely used to implement fault tolerance techniques in asynchronous distributed systems. The use of failure detectors comes from the impossibility to implement deterministic agreement protocols in these environments, since it is not possible to distinguish a crashed process from a very slow process. Ho
Publicado em: 2006
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4. Qualidade de serviço de detectores de defeitos na presença de rajadas de perdas de mensagens / Quality of service of failure detectors in the presence of message loss bursts
A Qualidade de Serviço (QoS) de detectores de defeitos determina a rapidez que um detector de defeitos q detecta a quebra de um processo p, e a precisão que q informa essa quebra. Em redes de longa distância e em redes sem fio, a ocorrência de quebras de processo, altas variações de atraso e perdas de pacotes em rajadas são comuns. Nestas condições,
Publicado em: 2006
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5. Efficient and robust adaptive consensus services based on oracles
Due to their fundamental role in the design of faulttolerant distributed systems, consensus protocols have been widely studied. Most of the research in this area has focused on providing ways for circumventing the impossibility of reaching consensus on a purely asynchronous system subject to failures. Of particular interest are the indulgent consensus protoc
Journal of the Brazilian Computer Society. Publicado em: 2005-04
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6. Um modelo hÃbrido e adaptativo para sistemas distribuÃdos tolerantes a falhas
A distributed system can be defined as a set of processes that communicate via communication channels. Models for such systems characterize its aspects, mainly in the temporal and reliability domains. Partially synchronous models have been successfully developed to circumvent the impossibility of achieving fault tolerant consensus in pure, time free, asynchr
Publicado em: 2005
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7. Ambulatory monitoring of pulmonary artery pressure. A preliminary clinical evaluation.
Traditional measurement and recording methods are inadequate for continuous monitoring of ambulatory pulmonary artery pressure. Therefore a new miniaturised solid state system has been developed and assessed. A manometer tipped catheter, inserted via a subclavian or cephalic vein, was used together with an isolated amplifier and peak detectors to determine s