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Gestion de mémoire secondaire - Sardes

Gestion de mémoire secondaire - Sardes

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<strong>Gestion</strong> <strong>de</strong> caches• Optimisation par cache <strong>de</strong> blocs LRU (last frequently used) ou LFU (last frequently used)• Main memory disk caching: cache géré en mémoireprincipale• ON-Disk caching: RAM intégrée au contrôleur disque ATA Disk : 5MB, IBM Ultra 160 : 16MB Avantageux pour les lectures en cas <strong>de</strong> localité d’accès Cher, et complexe pour la gestion <strong>de</strong>s écritures fiables© F. Boyer, UJF Cours <strong>de</strong> Systèmes d’Exploitation – RICM427

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