The design and implementation of a log-structured file system
ACM Transactions on Computer Systems (TOCS)
eNVy: a non-volatile, main memory storage system
ASPLOS VI Proceedings of the sixth international conference on Architectural support for programming languages and operating systems
Cleaning policies in mobile computers using flash memory
Journal of Systems and Software
A New Flash Memory Management for Flash Storage System
COMPSAC '99 23rd International Computer Software and Applications Conference
Real-time garbage collection for flash-memory storage systems of real-time embedded systems
ACM Transactions on Embedded Computing Systems (TECS)
A flash-memory based file system
TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
Endurance enhancement of flash-memory storage systems: an efficient static wear leveling design
Proceedings of the 44th annual Design Automation Conference
Swap-Aware Garbage Collection for NAND Flash Memory Based Embedded Systems
CIT '07 Proceedings of the 7th IEEE International Conference on Computer and Information Technology
A space-efficient flash translation layer for CompactFlash systems
IEEE Transactions on Consumer Electronics
Increasing PCM main memory lifetime
Proceedings of the Conference on Design, Automation and Test in Europe
Meta-Cure: a reliability enhancement strategy for metadata in NAND flash memory storage systems
Proceedings of the 49th Annual Design Automation Conference
SAW: system-assisted wear leveling on the write endurance of NAND flash devices
Proceedings of the 50th Annual Design Automation Conference
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NAND Flash Memories require Garbage Collection (GC) and Wear Leveling (WL) operations to be carried out by Flash Translation Layers (FTLs) that oversee flash management. Owing to expensive erasures and data copying, these two operations essentially determine application response times. Since file systems do not share any file deletion information with FTL, dead data is treated as valid by FTL, resulting in significant WL and GC overheads. In this work, we propose a novel method to dynamically interpret and treat dead data at the FTL level so as to reduce above overheads and improve application response times, without necessitating any changes to existing file systems. We demonstrate that our resource-efficient approach can improve application response times and memory write access times by 22% and reduce erasures by 21.6% on average.