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Suspend-aware Segment Cleaning in Log-structured File System

Title
Suspend-aware Segment Cleaning in Log-structured File System
Author
원유집
Issue Date
2015-07
Publisher
Usenix
Citation
7th USENIX Workshop on Hot Topics in Storage and File Systems(HotStorage'15), Page. 1-5
Abstract
The suspend feature of the modern smart device practically suppresses the background segment cleaning of the log-structured file system. In this work, we develop Suspend-aware Segment Cleaning for the log-structured file system. We seamlessly integrate the segment cleaning into the suspend module of the smartphone OS so that the log-structured file system can reclaim the free segments without interfering with the foreground user activity. The Suspend-aware Segment Cleaning consists of two key ingredients: (i) Virtual Segment Cleaning and (ii) Utilization-based Segment Cleaning. We implement Suspend-aware Segment Cleaning in commodity smartphone which uses the log-structured file system, F2FS, as its stock file system (Moto G). F2FS with Suspend-aware Segment Cleaning consolidates 6 more segments than stock smartphone does. With Suspend-aware Segment Cleaning, the F2FS consolidates 2 more segments even with suspend mode on than the case where the phone is always on.
URI
https://www.usenix.org/conference/hotstorage15/workshop-program/presentation/parkhttp://hdl.handle.net/20.500.11754/26412
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > COMPUTER SCIENCE AND ENGINEERING(컴퓨터공학부) > Articles
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