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Nicoleta Sergent

Related publications (11)

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Failure Detectors: implementation issues and impact on consensus performance

André Schiper, Xavier Défago, Nicoleta Sergent

Due to their nature, distributed systems are vulnerable to failures of some of their parts. Conversely, distribution also provides a way to increase the fault tolerance of the overall system. However, achieving fault tolerance is not a simple problem and r ...

1999

The performance of the consensus algorithm running on FDDI

Nicoleta Sergent

The performance of the consensus algorithm running on FDDI N. Sergent This paper presents an application of Hierarchical Coloured Timed Petri Nets to the modelling and the performance evaluation of a distributed consensus algorithm. We took a top down modu ...

1998

Soft real-time analysis of asynchronous agreement algorithms using Petri nets

Nicoleta Sergent

A distributed algorithm comprises a collection of sequential-code entities, which are spread over different computers connected to a network. The process of designing a distributed algorithm is influenced by the assumptions we make on the computational env ...

EPFL1998

Semi-Passive Replication

André Schiper, Xavier Défago, Nicoleta Sergent

This paper presents the semi-passive replication technique -- a variant of passive replication -- that can be implemented in the asynchronous system model without requiring a membership service to agree on a primary. Passive replication is a popular replic ...

1998

Semi-Passive Replication

André Schiper, Xavier Défago, Nicoleta Sergent

This paper presents the semi-passive replication technique -- a variant of passive replication -- that can be implemented in the asynchronous system model without requiring agreement on a primary (usually done using a membership service). Passive replicati ...

1998

Evaluating Latency of Distributed Algorithms Using Petri Nets

Nicoleta Sergent

Evaluating Latency of Distributed Algorithms Using Petri Nets N. Sergent The time it takes to a distributed algorithm to finish (the distributed algorithm latency) cannot be directly measured in asynchronous systems if the algorithm starts and ends on diff ...

1997

A Petri Net Model for FDDI

Nicoleta Sergent

Fiber Distributed Data Interface (FDDI) is a high speed local area network operating at 100Mbps using a fiber optic ring transmission medium. The purpose of this paper is to build a Petri net model for the FDDI media access control (MAC) protocol. This mod ...

1997

Probabilistic Guarantees on the Termination Time of a Consensus Algorithm in Asynchronous Systems

Nicoleta Sergent

Probabilistic Guarantees on the Termination Time of a Consensus Algorithm in Asynchronous Systems N. Sergent This paper is concerned with an application of Hierarchical Coloured Timed Petri Nets to the modelling and the performance evaluation of a distribu ...

1997

Performance Evaluation of a Consensus Algorithm with Petri Nets

Nicoleta Sergent

Performance Evaluation of a Consensus Algorithm with Petri Nets N. Sergent This paper presents an application of Hierarchical Coloured Timed Petri Nets to the modeling, the evaluation and the improvement of the performance of a distributed consensus algori ...

1997

A Petri Net based approach for modelling multi-layered distributed protocols

Nicoleta Sergent

A Petri Net based approach for modelling multi-layered distributed protocols N. Sergent This paper presents an original modelling approach which aims to provide probabilistic guarantees on time in asynchronous distributed systems for several important algo ...

1996