In-memory file system for non-volatile memory

  • Kim H
  • Ahn J
  • Ryu S
 et al. 
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Current memory system hierarchy consists of cache mem- ory, main memory, and secondary storage. Each level in this hierarchy has a different access speed to tolerate the long latency of the lower level but supports a large capacity as a whole memory system. As new technologies introduce non-volatile memories powerful enough to close the perfor- mance gap of the previous generation non-volatilememories, we can devise a new memory system that replaces DRAM with non-volatile memory for the main memory. To adopt a new memory technology, we discuss a new file system based on tmpfs with three aspects that need to be included, and evaluate its performance against popular file systems such as ext4. Categories

Author-supplied keywords

  • file system
  • in-memory file system
  • non-volatile memory
  • performance
  • virtual memory file system

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  • Hyunjun Kim

  • Joonwook Ahn

  • Sungtae Ryu

  • Jungsik Choi

  • Hwansoo Han

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