Clock Synchronization in the Byzantine-Recovery Failure Model

Abstract : We consider the problem of synchronizing clocks in synchronous systems prone to transient and dynamic process failures, i.e., we consider systems where all processes may alternate correct and Byzantine behaviors. We propose a clock synchronization algorithm based on periodical resynchronizations which is based on the assumption that no more than f < n/3 processes (with n the number of processors in the system) are simultaneously faulty. Both, accuracy (clocks being within a linear envelope of real-time) and precision (maximum deviation between clocks) perpetually hold for processes which sufficiently long follow their algorithm. We provide expressions for both the recovery time and the failure turn-over rates. Both expressions are independent of f, and are less than the time needed to execute 3 resynchronizations.
Type de document :
Communication dans un congrès
OPODIS, 2007, Pointe-à-Pitre, France. 2007
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Contributeur : Emmanuelle Anceaume <>
Soumis le : vendredi 14 mars 2008 - 15:31:06
Dernière modification le : mercredi 16 mai 2018 - 11:23:01
Document(s) archivé(s) le : vendredi 28 septembre 2012 - 11:15:24


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  • HAL Id : inria-00264219, version 1


Emmanuelle Anceaume, Carole Delporte-Gallet, Hugues Fauconnier, Michel Hurfin, Josef Widder. Clock Synchronization in the Byzantine-Recovery Failure Model. OPODIS, 2007, Pointe-à-Pitre, France. 2007. 〈inria-00264219〉



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