ModelGraft: Accurate, Scalable, and Flexible Performance Evaluation of General Cache Networks - IMT - Institut Mines-Télécom Accéder directement au contenu
Communication Dans Un Congrès Année : 2016

ModelGraft: Accurate, Scalable, and Flexible Performance Evaluation of General Cache Networks

Résumé

Large scale deployments of general cache networks, such as Content Delivery Networks or Information Centric Networking architectures, arise new challenges regarding their performance evaluation for network planning. On the one hand, analytical models can hardly represent in details all the interactions of complex replacement, replication, and routing policies on arbitrary topologies. On the other hand, the sheer size of networks and content catalogs makes event-driven simulation techniques inherently non-scalable. We propose a new technique for the performance evaluation of large-scale caching systems that intelligently integrates elements of stochastic analysis within a MonteCarlo simulative approach, that we colloquially refer to as ModelGraft. Our approach (i) leverages the intuition that complex scenarios can be mapped to a simpler equivalent scenario that builds upon Time-To-Live (TTL) caches; it (ii) significantly downscales the scenario to lower computation and memory complexity, while, at the same time, preserving its properties to limit accuracy loss; finally, it (iii) is simple to use and robust, as it autonomously converges to a consistent state through a feedback-loop control system, regardless of the initial state. Performance evaluation shows that, with respect to classic event-driven simulation, ModelGraft gains over two orders of magnitude in both CPU time and memory complexity, while limiting accuracy loss below 2%. In addition, we show that ModelGraft extends performance evaluation well beyond the boundaries of classic approaches, by enabling study of Internet-scale scenarios with content catalogs comprising hundreds of billions objects.
Fichier non déposé

Dates et versions

hal-01383251 , version 1 (18-10-2016)

Identifiants

  • HAL Id : hal-01383251 , version 1

Citer

Michele Tortelli, D. Rossi, E. Leonardi. ModelGraft: Accurate, Scalable, and Flexible Performance Evaluation of General Cache Networks. ITC28,, Sep 2016, Wuerzburg, Germany. ⟨hal-01383251⟩
150 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More