Improving Flash Memory Performance and Reliability for Smartphones With I/O Deduplication
| Autor: | Yang Weijian, Bo Mao, Suzhen Wu, Jindong Zhou, Chen Xiao, Hong Jiang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Input/output
Cost efficiency Computer science business.industry Write amplification 02 engineering and technology Computer Graphics and Computer-Aided Design Flash memory 020202 computer hardware & architecture Data redundancy Embedded system 0202 electrical engineering electronic engineering information engineering Redundancy (engineering) Data deduplication Electrical and Electronic Engineering business Critical path method Software |
| Zdroj: | IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems. 38:1017-1027 |
| ISSN: | 1937-4151 0278-0070 |
| DOI: | 10.1109/tcad.2018.2834395 |
| Popis: | 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%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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