A Methodology for Estimating Performance and Power Consumption of Embedded Flash File Systems

Pierre Olivier 1 Jalil Boukhobza 1 Eric Senn 2 Hamza Ouarnoughi 1
1 Lab-STICC_UBO_CACS_MOCS
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance, UBO - Université de Brest
2 Lab-STICC_UBS_CACS_MOCS
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
Abstract : In the embedded systems domain, obtaining performance and power consumption estimations is extremely valuable in numerous cases. This is particularly true during the design stage, as designers of complex embedded systems face an increasingly large design space. Secondary storage is a well-known performance bottleneck and has also been reported as an important factor of power consumption. Flash memory is the main secondary storage media in an embedded system and exhibits specific constraints in its usage. One popular way to manage these constraints is to use dedicated Flash File Systems (FFS). In this article, we propose a methodology to estimate the performance and power consumption of applicative I/Os on an FFS-based storage system within embedded Linux. The methodology is divided into three sequential steps. In the exploration phase, the main factors of an FFS storage system impacting performance and power consumption are identified. In the modeling phase, this impact is formalized into models. Finally, in the last phase, the models are implemented in a simulator named OpenFlash. OpenFlash allows obtaining performance and power consumption estimations for an applicative workload processed by the Linux FFS storage stack on an embedded platform. The simulator is validated against real measurements and the estimation error stays below 10%.
Type de document :
Article dans une revue
ACM Transactions on Embedded Computing Systems (TECS), ACM, 2016, 15 (4), 〈10.1145/2903139〉
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http://hal.univ-brest.fr/hal-01352435
Contributeur : Jalil Boukhobza <>
Soumis le : dimanche 7 août 2016 - 21:19:44
Dernière modification le : mardi 16 janvier 2018 - 15:54:24

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Pierre Olivier, Jalil Boukhobza, Eric Senn, Hamza Ouarnoughi. A Methodology for Estimating Performance and Power Consumption of Embedded Flash File Systems. ACM Transactions on Embedded Computing Systems (TECS), ACM, 2016, 15 (4), 〈10.1145/2903139〉. 〈hal-01352435〉

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