ACM Transactions on Computer Systems (TOCS)
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
A large-scale study of file-system contents
SIGMETRICS '99 Proceedings of the 1999 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Towards A Low Power File System
Towards A Low Power File System
File size distribution on UNIX systems: then and now
ACM SIGOPS Operating Systems Review
CFLRU: a replacement algorithm for flash memory
CASES '06 Proceedings of the 2006 international conference on Compilers, architecture and synthesis for embedded systems
A design for high-performance flash disks
ACM SIGOPS Operating Systems Review - Systems work at Microsoft Research
A flash-memory based file system
TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
Storage alternatives for mobile computers
OSDI '94 Proceedings of the 1st USENIX conference on Operating Systems Design and Implementation
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
OSDI'08 Proceedings of the 8th USENIX conference on Operating systems design and implementation
A space-efficient flash translation layer for CompactFlash systems
IEEE Transactions on Consumer Electronics
FAB: flash-aware buffer management policy for portable media players
IEEE Transactions on Consumer Electronics
Lightning: self-adaptive, energy-conserving, multi-zoned, commodity green cloud storage system
Proceedings of the 19th ACM International Symposium on High Performance Distributed Computing
HotStorage'10 Proceedings of the 2nd USENIX conference on Hot topics in storage and file systems
Proceedings of the 2010 ACM/IEEE International Conference for High Performance Computing, Networking, Storage and Analysis
Differentiated storage services
ACM SIGOPS Operating Systems Review
FAST'11 Proceedings of the 9th USENIX conference on File and stroage technologies
Flash memory performance on a highly scalable IOV system
WIOV'11 Proceedings of the 3rd conference on I/O virtualization
ShiftFlash: Make flash-based storage more resilient and robust
Performance Evaluation
Differentiated storage services
SOSP '11 Proceedings of the Twenty-Third ACM Symposium on Operating Systems Principles
SCMFS: a file system for storage class memory
Proceedings of 2011 International Conference for High Performance Computing, Networking, Storage and Analysis
FlashTier: a lightweight, consistent and durable storage cache
Proceedings of the 7th ACM european conference on Computer Systems
E-HASH: an energy-efficient hybrid storage system composed of one SSD and multiple HDDs
ICSI'12 Proceedings of the Third international conference on Advances in Swarm Intelligence - Volume Part II
Revisiting widely held SSD expectations and rethinking system-level implications
Proceedings of the ACM SIGMETRICS/international conference on Measurement and modeling of computer systems
Exploiting workload dynamics to improve SSD read latency via differentiated error correction codes
ACM Transactions on Design Automation of Electronic Systems (TODAES) - Special Section on Networks on Chip: Architecture, Tools, and Methodologies
HotOS'13 Proceedings of the 14th USENIX conference on Hot Topics in Operating Systems
Unified high-performance I/O: one stack to rule them all
HotOS'13 Proceedings of the 14th USENIX conference on Hot Topics in Operating Systems
SCMFS: A File System for Storage Class Memory and its Extensions
ACM Transactions on Storage (TOS)
Challenges in getting flash drives closer to CPU
HotStorage'13 Proceedings of the 5th USENIX conference on Hot Topics in Storage and File Systems
Sector-Disk (SD) Erasure Codes for Mixed Failure Modes in RAID Systems
ACM Transactions on Storage (TOS)
SD codes: erasure codes designed for how storage systems really fail
FAST'13 Proceedings of the 11th USENIX conference on File and Storage Technologies
Getting real: lessons in transitioning research simulations into hardware systems
FAST'13 Proceedings of the 11th USENIX conference on File and Storage Technologies
Extending the lifetime of flash-based storage through reducing write amplification from file systems
FAST'13 Proceedings of the 11th USENIX conference on File and Storage Technologies
ReconFS: a reconstructable file system on flash storage
FAST'14 Proceedings of the 12th USENIX conference on File and Storage Technologies
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This paper presents the design, implementation and evaluation of Direct File System (DFS) for virtualized flash storage. Instead of using traditional layers of abstraction, our layers of abstraction are designed for directly accessing flash memory devices. DFS has two main novel features. First, it lays out its files directly in a very large virtual storage address space provided by FusionIO's virtual flash storage layer. Second, it leverages the virtual flash storage layer to perform block allocations and atomic updates. As a result, DFS performs better and it is much simpler than a traditional Unix file system with similar functionalities. Our microbenchmark results show that DFS can deliver 94,000 I/O operations per second (IOPS) for direct reads and 71,000 IOPS for direct writes with the virtualized flash storage layer on FusionIO's ioDrive. For direct access performance, DFS is consistently better than ext3 on the same platform, sometimes by 20%. For buffered access performance, DFS is also consistently better than ext3, and sometimes by over 149%. Our application benchmarks show that DFS outperforms ext3 by 7% to 250% while requiring less CPU power.