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F2FS: A New File System for Flash Storage

Authors: 

Changman Lee, Dongho Sim, Joo-Young Hwang, and Sangyeun Cho, Samsung Electronics Co., Ltd.

Abstract: 

F2FS is a Linux file system designed to perform well on modern flash storage devices. The file system builds on append-only logging and its key design decisions were made with the characteristics of flash storage in mind. This paper describes the main design ideas, data structures, algorithms and the resulting performance of F2FS.

Experimental results highlight the desirable performance of F2FS; on a state-of-the-art mobile system, it outperforms EXT4 under synthetic workloads by up to 3.1 (iozone) and 2 (SQLite). It reduces elapsed time of several realistic workloads by up to 40%. On a server system, F2FS is shown to perform better than EXT4 by up to 2.5 (SATA SSD) and 1.8 (PCIe SSD).

Changman Lee, Samsung Electronics Co., Ltd.

Dongho Sim, Samsung Electronics Co., Ltd.

Jooyoung Hwang, Samsung Electronics Co., Ltd.

Sangyeun Cho, Samsung Electronics Co., Ltd.

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BibTeX
@inproceedings {188454,
author = {Changman Lee and Dongho Sim and Jooyoung Hwang and Sangyeun Cho},
title = {{F2FS}: A New File System for Flash Storage},
booktitle = {13th USENIX Conference on File and Storage Technologies (FAST 15)},
year = {2015},
isbn = {978-1-931971-201},
address = {Santa Clara, CA},
pages = {273--286},
url = {https://www.usenix.org/conference/fast15/technical-sessions/presentation/lee},
publisher = {USENIX Association},
month = feb,
}
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