Abstract:

Recent mobile devices adopt various flash storage devices as a primary storage. File system support for those devices is a must for flash device performance and lifespan. I will present a new file system, called F2FS, designed for mobile flash storage. F2FS is designed considering the characteristics of the underlying flash storage which has a flash translation layer (FTL). F2FS outperforms EXT4, which is a popular file system for Android phones, in most benchmarks. I will describe the motivation, design, and implementation of the file system, then show a detailed performance comparison with EXT4. Target audiences are those who are interested in file system support for flash storages such as eMMC and SSD. Kernel and file system expertise helps but is not mandatory to listen to this talk.

Bio:

Joo-Young Hwang received Ph.D from KAIST in 2003 and has been working for Samsung Electronics Co., Ltd. since then. His research interests include storage, file system, virtualization, and the Linux kernel. He developed RFS which is Samsung's commercial file system for flash memory and a Xen hypervisor for the ARM CPU. Recently he is working on developing storage stack for flash storages such as SSD and eMMC cards.