Simplifying and Accelerating NOR Flash I/O Stack for RAM-Restricted Microcontrollers

NOR flash has been increasingly popular for RAM-restricted microcontrollers due to its small package, high reliability, etc. To satisfy RAM restrictions, existing NOR flash file systems migrate their functionalities, i.e., block-level data organization and wear leveling (WL), from RAM to NOR flash. However, such fine-grained block-level management introduces frequent index updates and NOR flash scanning, leading to severe I/O amplification, which further deteriorates as they are decoupled in existing NOR flash file systems.

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Publication Details

Published
2025-03-27
DOI
https://doi.org/10.1145/3676641.3716272
Primary Topic
Parallel Computing and Optimization Techniques
Type
article
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article

Simplifying and Accelerating NOR Flash I/O Stack for RAM-Restricted Microcontrollers

Xiangyu Zou, Hongwei Du, Hao Huang, Wen Xia et al.
Parallel Computing and Optimization Techniques
article

Simplifying and Accelerating NOR Flash I/O Stack for RAM-Restricted Microcontrollers

Xiangyu Zou, Hongwei Du, Hao Huang, Wen Xia, Yanqi Pan, Liang Shi, Dong‐Jun Yang
article en

Abstract

NOR flash has been increasingly popular for RAM-restricted microcontrollers due to its small package, high reliability, etc. To satisfy RAM restrictions, existing NOR flash file systems migrate their functionalities, i.e., block-level data organization and wear leveling (WL), from RAM to NOR flash. However, such fine-grained block-level management introduces frequent index updates and NOR flash scanning, leading to severe I/O amplification, which further deteriorates as they are decoupled in existing NOR flash file systems.

Harbin Institute of Technology (CN), East China Normal University (CN)
Affordable and clean energy
Openalex Percentile: Top 95%
Parallel Computing and Optimization Techniques
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