Is buffer cache still effective for high speed PCM (phase change memory) storage?

Eunji Lee, Daeha Jin, Kern Koh, Hyokyung Bahn

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Recently, PCM (phase change memory) emerges as a new storage media and there is a bright prospect that PCM will be used as a storage device in the near future. Since the optimistic access time of PCM is expected to be almost identical to that of DRAM, we can make a question that the traditional buffer cache will be still effective for high speed secondary storage such as PCM. This paper answers it by showing that the buffer cache is still effective in such environments due to the software overhead and the bimodal block reference characteristics. Based on this observation, we present a new buffer cache management scheme appropriately for the system where the speed gap between the cache and storage is small. To this end, we analyze the condition that caching gains and find the characteristics of I/O traces that can be exploited in managing buffer cache for PCM-storage.

Original languageEnglish
Title of host publicationProceedings - 2011 17th IEEE International Conference on Parallel and Distributed Systems, ICPADS 2011
Pages356-363
Number of pages8
DOIs
StatePublished - 2011
Event2011 17th IEEE International Conference on Parallel and Distributed Systems, ICPADS 2011 - Tainan, Taiwan, Province of China
Duration: 7 Dec 20119 Dec 2011

Publication series

NameProceedings of the International Conference on Parallel and Distributed Systems - ICPADS
ISSN (Print)1521-9097

Conference

Conference2011 17th IEEE International Conference on Parallel and Distributed Systems, ICPADS 2011
Country/TerritoryTaiwan, Province of China
CityTainan
Period7/12/119/12/11

Keywords

  • Buffer cache
  • File systmes
  • Phase change memory

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