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Improving Flash Memory Performance and Reliability for Smartphones With I/O Deduplication.

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Title: Improving Flash Memory Performance and Reliability for Smartphones With I/O Deduplication.
Authors: Mao, Bo1, Zhou, Jindong1, Wu, Suzhen2, Chen, Xiao2, Yang, Weijian2, Jiang, Hong3
Source: IEEE Transactions on Computer-Aided Design of Integrated Circuits & Systems. Jun2019, Vol. 38 Issue 6, p1017-1027. 11p.
Subjects: Adobe Flash (Computer software), Memory, Intellect, Mental discipline, Smartphones
Abstract: Flash-based storage subsystem is the key component that affects the system performance, reliability, and cost efficiency of Android-based smartphones. In this paper, we first introduce a trace collection tool specifically designed to capture the I/O requests with important content features in Android-based smartphones, which are critically important but rarely available in content-aware designs and optimizations, such as JProbe and Netlink. Based on the analysis of the traces collected from 15 popular mobile applications, we find that 20%–40% of the I/O requests on the I/O critical path of the storage stack are redundant and this data redundancy is minimally shared among different applications. Based on this key observation, we propose a content-aware optimization, called APP-Dedupe, that applies data deduplication on the I/O critical path to improve both performance and efficiency by reducing write amplification and improving GC efficiency of the flash storage on Android smartphones. The evaluation results show that APP-Dedupe reduces the GC overhead by an average of 41.5%, reduces the response times by up to 15.4% and reduces the amount of write data by an average of 45.2%. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Computer-Aided Design of Integrated Circuits & Systems is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Improving Flash Memory Performance and Reliability for Smartphones With I/O Deduplication.
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  Data: <searchLink fieldCode="DE" term="%22Adobe+Flash+%28Computer+software%29%22">Adobe Flash (Computer software)</searchLink><br /><searchLink fieldCode="DE" term="%22Memory%22">Memory</searchLink><br /><searchLink fieldCode="DE" term="%22Intellect%22">Intellect</searchLink><br /><searchLink fieldCode="DE" term="%22Mental+discipline%22">Mental discipline</searchLink><br /><searchLink fieldCode="DE" term="%22Smartphones%22">Smartphones</searchLink>
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  Data: Flash-based storage subsystem is the key component that affects the system performance, reliability, and cost efficiency of Android-based smartphones. In this paper, we first introduce a trace collection tool specifically designed to capture the I/O requests with important content features in Android-based smartphones, which are critically important but rarely available in content-aware designs and optimizations, such as JProbe and Netlink. Based on the analysis of the traces collected from 15 popular mobile applications, we find that 20%–40% of the I/O requests on the I/O critical path of the storage stack are redundant and this data redundancy is minimally shared among different applications. Based on this key observation, we propose a content-aware optimization, called APP-Dedupe, that applies data deduplication on the I/O critical path to improve both performance and efficiency by reducing write amplification and improving GC efficiency of the flash storage on Android smartphones. The evaluation results show that APP-Dedupe reduces the GC overhead by an average of 41.5%, reduces the response times by up to 15.4% and reduces the amount of write data by an average of 45.2%. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEEE Transactions on Computer-Aided Design of Integrated Circuits & Systems is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TCAD.2018.2834395
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Memory
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      – SubjectFull: Intellect
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      – SubjectFull: Mental discipline
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      – SubjectFull: Smartphones
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      – TitleFull: Improving Flash Memory Performance and Reliability for Smartphones With I/O Deduplication.
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              Text: Jun2019
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              Y: 2019
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