Characterizing File Accesses in Android Applications and Caching Implications
In this paper, we explore Android applications’ file access characteristics, and find out that smartphone file accesses are different from traditional desktop applications in terms of the following aspects. 1) There exist a limited number of hot blocks, which are accessed consistently dur...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2021-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9605595/ |
| _version_ | 1811210538266394624 |
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| author | Soojung Lim Hyokyung Bahn |
| author_facet | Soojung Lim Hyokyung Bahn |
| author_sort | Soojung Lim |
| collection | DOAJ |
| description | In this paper, we explore Android applications’ file access characteristics, and find out that smartphone file accesses are different from traditional desktop applications in terms of the following aspects. 1) There exist a limited number of hot blocks, which are accessed consistently during the entire execution of an application. 2) Block accesses in Android are highly biased such that the top 20% blocks account for 80% of total accesses. 3) Hot blocks of the top 100 rankings are mostly involved in SQLite. 4) Unlike desktop applications, file accesses in Android applications are write-intensive. 5) In predicting future file accesses in Android applications, frequency is a better estimator than temporal locality. 6) The effect of traditional buffer cache is limited in Android as file I/O in Android has a lot of synchronous writes, which incurs immediate storage flushing. Based on these analyses, this paper presents the implication of buffer cache management in Android. Specifically, we add a small non-volatile write buffer and present how this write buffer can be managed efficiently. Experimental results show that the proposed scheme improves the storage write traffic by an average of 21.7% and a maximum of 48.1% compared to the conventional buffer cache system. |
| first_indexed | 2024-04-12T04:56:17Z |
| format | Article |
| id | doaj.art-d8c0154b582041dd811f93904ef6aae6 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T04:56:17Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-d8c0154b582041dd811f93904ef6aae62022-12-22T03:47:07ZengIEEEIEEE Access2169-35362021-01-01915029215030310.1109/ACCESS.2021.31257799605595Characterizing File Accesses in Android Applications and Caching ImplicationsSoojung Lim0https://orcid.org/0000-0001-7116-203XHyokyung Bahn1https://orcid.org/0000-0002-7188-3889Department of Computer Engineering, Ewha University, Seoul, South KoreaDepartment of Computer Engineering, Ewha University, Seoul, South KoreaIn this paper, we explore Android applications’ file access characteristics, and find out that smartphone file accesses are different from traditional desktop applications in terms of the following aspects. 1) There exist a limited number of hot blocks, which are accessed consistently during the entire execution of an application. 2) Block accesses in Android are highly biased such that the top 20% blocks account for 80% of total accesses. 3) Hot blocks of the top 100 rankings are mostly involved in SQLite. 4) Unlike desktop applications, file accesses in Android applications are write-intensive. 5) In predicting future file accesses in Android applications, frequency is a better estimator than temporal locality. 6) The effect of traditional buffer cache is limited in Android as file I/O in Android has a lot of synchronous writes, which incurs immediate storage flushing. Based on these analyses, this paper presents the implication of buffer cache management in Android. Specifically, we add a small non-volatile write buffer and present how this write buffer can be managed efficiently. Experimental results show that the proposed scheme improves the storage write traffic by an average of 21.7% and a maximum of 48.1% compared to the conventional buffer cache system.https://ieeexplore.ieee.org/document/9605595/Androidfile accessapplicationsmartphonebuffer cachenon-volatile memory |
| spellingShingle | Soojung Lim Hyokyung Bahn Characterizing File Accesses in Android Applications and Caching Implications IEEE Access Android file access application smartphone buffer cache non-volatile memory |
| title | Characterizing File Accesses in Android Applications and Caching Implications |
| title_full | Characterizing File Accesses in Android Applications and Caching Implications |
| title_fullStr | Characterizing File Accesses in Android Applications and Caching Implications |
| title_full_unstemmed | Characterizing File Accesses in Android Applications and Caching Implications |
| title_short | Characterizing File Accesses in Android Applications and Caching Implications |
| title_sort | characterizing file accesses in android applications and caching implications |
| topic | Android file access application smartphone buffer cache non-volatile memory |
| url | https://ieeexplore.ieee.org/document/9605595/ |
| work_keys_str_mv | AT soojunglim characterizingfileaccessesinandroidapplicationsandcachingimplications AT hyokyungbahn characterizingfileaccessesinandroidapplicationsandcachingimplications |