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Design of Optimized SWAP System for Next-Generation Storage Devices

차세대 저장 장치에 최적화된 SWAP 시스템 설계

  • 한혁 (동덕여자대학교 컴퓨터학과)
  • Received : 2014.12.10
  • Accepted : 2015.02.09
  • Published : 2015.04.28

Abstract

On modern operating systems such as Linux, virtual memory is a general way to provide a large address space to applications by using main memory and storage devices. Recently, storage devices have been improved in terms of latency and bandwidth, and it is expected that applications with large memory show high-performance if next-generation storage devices are considered. However, due to the overhead of virtual memory subsystem, the paging system can not exploit the performance of next-generation storage devices. In this study, we propose several optimization techniques to extend memory with next-generation storage devices. The techniques are to allocate block addresses of storage devices for write-back operations as well as to configure the system parameters, and we implement the techniques on Linux 3.14.3. Our evaluation through using multiple benchmarks shows that our system has 3 times (/24%) better performance on average than the baseline system in the micro(/macro)-benchmark.

Keywords

Operating System;Virtual Memory;Memory Extension;SWAP;Next-;Generation Storage Device Linux

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