A user-level file system for fast storage devices
- Authors
- Son, Y.; Song, N.Y.; Han, H.; Eom, H.; Yeom, H.Y.
- Issue Date
- Sep-2015
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- fast storage device; file system; I/O stack; Low latency I/O
- Citation
- Proceedings - 2014 International Conference on Cloud and Autonomic Computing, ICCAC 2014, pp 258 - 264
- Pages
- 7
- Journal Title
- Proceedings - 2014 International Conference on Cloud and Autonomic Computing, ICCAC 2014
- Start Page
- 258
- End Page
- 264
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/60816
- DOI
- 10.1109/ICCAC.2014.14
- ISSN
- 0000-0000
- Abstract
- Lately, fast storage devices are rapidly increasing in social network services, cloud platforms, etc. Unfortunately, the traditional Linux I/O stack is designed to maximize performance on disk-based storage. Emerging byte-addressable and low-latency non-volatile memory (NVM) technologies (e.g., Phase-change memories, spin-transfer torque MRAMs, and the memristor) provides very different characteristics, so the disk-based I/O stack cannot lead to high performance. This paper presents a high performance I/O stack for the fast storage devices. Our scheme is to remove the concept of block and to simplify the whole I/O path and software stack, which results in only two layers that are composed of the byte-capable interface and the byte-aware file system called BAFS. We aim to minimize I/O latency and maximize bandwidth by eliminating the unnecessary layers and supporting byte-addressable I/O without requiring changes to applications. We have implemented a prototype and evaluated its performance with multiple benchmarks. The experimental results show that our I/O stack achieves 6.2 times on average and up to 17.5 times performance gains compared to existing Linux I/O stack. © 2014 IEEE.
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