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In-Memory File System with Efficient Swap Support for Mobile Smart Devices

Authors
Choi, J[Choi, Jungsik]Ahn, J[Ahn, Joonwook]Kim, J[Kim, Jiwon]Ryu, S[Ryu, Sungtae]Han, H[Han, Hwansoo]
Issue Date
Aug-2016
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Mobile devices; In-memory file system; Swap mechanism; File I/O performance
Citation
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, v.62, no.3, pp.275 - 282
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
Volume
62
Number
3
Start Page
275
End Page
282
URI
https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/35699
ISSN
0098-3063
Abstract
As the number of file I/O intensive mobile applications increase, in-memory file systems have gained attention. In-memory file systems provide a fast access to file data, but the main memory of the corresponding mobile devices often suffers due to its capacity limit. To provide mobile applications with more free space, the swap mechanism has been an essential technique for the overcoming of this space insufficiency; however, the existing swap mechanism is inadequate for the file I/O of mobile applications. In this study, a new in-memory file system is devised to improve the current swap mechanism in the legacy in-memory file system, whereby strip-based layouts with separated file-swap partitions are used and unnecessary file-I/O overheads are eliminated. To evaluate the proposed in-memory file system, experiments with the file-I/O benchmark were conducted. The experiment results show that, compared to the current swap scheme, the proposed swap scheme improves the overall performance by ten times on average(1).
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