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A New Embedded Key-Value Store for NVM Device Simulator.

Tao Cai1, Qingjian He2, Dejiao Niu1

  • 1The School of Computer Science, Communication Engineering of Jiangsu University, Zhenjiang 212013, China.

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Summary
This summary is machine-generated.

PMEKV, a new embedded key-value store for non-volatile memory (NVM) devices, overcomes operating system bottlenecks. It enhances key-value store performance on NVM by reducing data transfers and copies.

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I/O software stackkey–value pairs managementkey–value storage system

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Area of Science:

  • Computer Science
  • Memory Systems Engineering

Background:

  • Non-volatile memory (NVM) offers a solution to the 'memory wall' problem in computing.
  • Existing operating system I/O software stacks create performance bottlenecks for NVM-based applications, particularly key-value stores.

Purpose of the Study:

  • To design and evaluate PMEKV, an embedded key-value store optimized for NVM devices.
  • To address the performance limitations imposed by traditional I/O software stacks on NVM devices.

Main Methods:

  • Analyzed key-value store and NVM device characteristics.
  • Designed PMEKV utilizing NVM device embedded processors to manage key-value pairs.
  • Reduced data transfer between NVM and applications, and data copying between user and kernel spaces.
  • Implemented a PMEKV prototype on Persistent Memory (PMEM).

Main Results:

  • PMEKV demonstrated superior throughput and adaptability compared to existing key-value stores like Redis, MongoDB, and Memcache.
  • Performance was validated against specialized PMEM-based solutions (PMEM-Redis, PMEM-KV).

Conclusions:

  • PMEKV effectively alleviates I/O software stack inefficiencies for key-value stores on NVM devices.
  • The embedded approach significantly improves performance and adaptability for NVM-based key-value storage.