Efficient management of PCM-based swap systems with a small page size
- 주제(키워드) Paging size , Phase-change memory , Swap system , Virtual memory
- 관리정보기술 faculty
- 등재 SCIE, KCI등재, SCOPUS
- 발행기관 Institute of Electronics Engineers of Korea
- 발행년도 2015
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000120175
- 본문언어 영어
- Published As http://dx.doi.org/10.5573/JSTS.2015.15.5.476
초록/요약
Due to the recent advances in non-volatile memory technologies such as PCM, a new memory hierarchy of computer systems is expected to appear. In this paper, we explore the performance of PCMbased swap systems and discuss how this system can be managed efficiently. Specifically, we introduce three management techniques. First, we show that the page fault handling time can be reduced by attaching PCM on DIMM slots, thereby eliminating the software stack overhead of block I/O and the context switch time. Second, we show that it is effective to reduce the page size and turn off the read-ahead option under the PCM swap system where the page fault handling time is sufficiently small. Third, we show that the performance is not degraded even with a small DRAM memory under a PCM swap device; this leads to the reduction of DRAM’s energy consumption significantly compared to HDD-based swap systems. We expect that the result of this paper will lead to the transition of the legacy swap system structure of “large memory – slow swap” to a new paradigm of “small memory – fast swap”. © 2015, Institute of Electronics Engineers of Korea. All rights reserved
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