A Working-set Sensitive Page Replacement Policy for PCM-based Swap Systems
- 주제(키워드) Phase-change memory , working-set , replacement policy , virtual memory , CLOCK
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 IEEK PUBLICATION CENTER
- 발행년도 2017
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000144500
- 본문언어 영어
- Published As http://dx.doi.org/10.5573/JSTS.2017.17.1.007
초록/요약
Due to the recent advances in PhageChange Memory (PCM) technologies, a new memory hierarchy of computer systems with PCM is expected to appear. In this paper, we present a new page replacement policy that adopts PCM as a high speed swap device. As PCM has limited write endurance, our goal is to minimize the amount of data written to PCM. To do so, we defer the eviction of dirty pages in proportion to their dirtiness. However, excessive preservation of dirty pages in memory may deteriorate the page fault rate, especially when the memory capacity is not enough to accommodate full working-set pages. Thus, our policy monitors the current working-set size of the system, and controls the deferring level of dirty pages not to degrade the system performances. Simulation experiments show that the proposed policy reduces the write traffic to PCM by 160% without performance degradations.
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