An Adaptive Striping Architecture for Flash Memory Storage Systems of Embedded Systems
RTAS '02 Proceedings of the Eighth IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS'02)
Real-time garbage collection for flash-memory storage systems of real-time embedded systems
ACM Transactions on Embedded Computing Systems (TECS)
A multi-channel architecture for high-performance NAND flash-based storage system
Journal of Systems Architecture: the EUROMICRO Journal
A log buffer-based flash translation layer using fully-associative sector translation
ACM Transactions on Embedded Computing Systems (TECS)
BPLRU: a buffer management scheme for improving random writes in flash storage
FAST'08 Proceedings of the 6th USENIX Conference on File and Storage Technologies
Design tradeoffs for SSD performance
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Proceedings of the 14th international conference on Architectural support for programming languages and operating systems
Performance Trade-Offs in Using NVRAM Write Buffer for Flash Memory-Based Storage Devices
IEEE Transactions on Computers
Proceedings of the 36th annual international symposium on Computer architecture
Hydra: A Block-Mapped Parallel Flash Memory Solid-State Disk Architecture
IEEE Transactions on Computers
KAST: K-Associative Sector Translation for NAND flash memory in real-time systems
Proceedings of the Conference on Design, Automation and Test in Europe
A Hybrid Approach to NAND-Flash-Based Solid-State Disks
IEEE Transactions on Computers
Ozone (O3): An Out-of-Order Flash Memory Controller Architecture
IEEE Transactions on Computers
CAVE: channel-aware buffer management scheme for solid state disk
Proceedings of the 2011 ACM Symposium on Applied Computing
Plugging versus logging: a new approach to write buffer management for solid-state disks
Proceedings of the 48th Design Automation Conference
A Pattern Adaptive NAND Flash Memory Storage Structure
IEEE Transactions on Computers
Real-Time Flash Translation Layer for NAND Flash Memory Storage Systems
RTAS '12 Proceedings of the 2012 IEEE 18th Real Time and Embedded Technology and Applications Symposium
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Solid-state disks use multichannel architectures to boost their data transfer rates. Because realistic disk workloads have numerous small write requests, modern flash-storage devices adopt a write buffer and a set of independent channels for better parallelism in serving small write requests. When a channel is undergoing garbage collection, it stops responding to inbound write traffic and accumulates page data in the write buffer. This results in contention for buffer space and creates idle periods in channels. This study presents a channel-management strategy, called garbage-collection advancing, which allows early start of garbage collection in channels for increasing the overlap among channel activities of garbage collection and restoring the balance of buffer-space usage among channels. This study further introduces cycle filling, which is a version of garbage-collection advancing tailored for the operation model of flash planes. Experimental results show that the proposed methods greatly outperformed existing designs of multichannel systems in terms of response and throughput. We also successfully implemented the proposed methods in a real solid-state disk and proved their feasibility in real hardware.