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Performance Improvement of Flash-Memory-Based NTFS/EXT2 – A Firmware Solution

Performance Improvement of Flash-Memory-Based NTFS/EXT2 – A Firmware Solution. Po-Lang Wu, Johnson Chang, and Tei-Wei Kuo National Taiwan University. Performance Improvement for NTFS/EXT2. Objective: Improve the performance of flash memory with the feature considerations of file systems.

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Performance Improvement of Flash-Memory-Based NTFS/EXT2 – A Firmware Solution

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  1. Performance Improvement of Flash-Memory-Based NTFS/EXT2 – A Firmware Solution Po-Lang Wu, Johnson Chang, and Tei-Wei Kuo National Taiwan University

  2. Performance Improvement for NTFS/EXT2 • Objective: • Improve the performance of flash memory with the feature considerations of file systems. • Method: • Cluster metadata files and metadata to improve system performance and to reduce the maintenance overhead. • Architecture • Adopt page-level mapping and a log-based updating mechanism. • Write mapping and version information in a summary page. Block Set

  3. System Architecture • File System Identifier: Determine the layout of the file systems • Metadata Filter: Separate Metadata requests and Userdata requests • Metadata FTL: Manage the Metadata location and translate to IO Operations • Cleaner: Do garbage collection to reclaim invalid pages

  4. Performance Evaluation • The experiments on EXT2 are on a DaVinci Evaluation Board with realistic transmission patterns and benchmark. • Bonnie++: Sequential/Random files creation and deletion • NTFS: Simulation over a 7-day disk trace

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