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Characterization of Android Memory References and Implication to Hybrid Memory Management
- Title
- Characterization of Android Memory References and Implication to Hybrid Memory Management
- Authors
- Lee, Soyoon; Bahn, Hyokyung
- Ewha Authors
- 반효경
- SCOPUS Author ID
- 반효경
- Issue Date
- 2021
- Journal Title
- IEEE ACCESS
- ISSN
- 2169-3536
- Citation
- IEEE ACCESS vol. 9, pp. 60997 - 61009
- Keywords
- Nonvolatile memory; Random access memory; Memory management; Social networking (online); Performance evaluation; Focusing; Browsers; Android; smartphone; application; memory reference; NVM; write operation; hybrid memory
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- In this article, we analyze Android applications' memory reference behaviors, and observe that smartphone memory accesses are different from traditional computer systems with respect to the following five aspects: 1) A limited number of hot pages account for a majority of memory writes, and these hot pages have similar logical addresses regardless of application types; 2) The identities of these hot pages are shared library, linker, and stack regions; 3) The memory access behaviors of hot pages do not change significantly as time progresses even after applications finish their launching; 4) The skewness of memory write accesses in Android is extremely stronger than that of desktop systems; 5) In predicting re-reference likelihood of hot pages, temporal locality is better than reference frequency. Based on these observations, we present a new smartphone memory management scheme for DRAM-NVM hybrid memory. Adopting NVM is effective in power-saving of smartphones, but NVM has weaknesses in write operations. Thus, we aim to identify write-intensive pages and place them on DRAM. Unlike previous studies, we prevent migration of pages between DRAM and NVM, which eliminates unnecessary NVM write traffic that accounts for 32-42% of total write traffic. By judiciously managing the admission of hot pages in DRAM, our scheme reduces the write traffic to NVM by 42% on average without performance degradations.
- DOI
- 10.1109/ACCESS.2021.3074179
- Appears in Collections:
- 인공지능대학 > 컴퓨터공학과 > Journal papers
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