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FragTracer: Real-Time Fragmentation Monitoring Tool for F2FS File System.

Minseon Cho1, Donghyun Kang2

  • 1Department of Computer Engineering, Changwon National University, Changwon 51140, Republic of Korea.

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|May 13, 2023
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Summary
This summary is machine-generated.

New tool FragTracer analyzes file system fragmentation on F2FS. Its negligible overhead aids performance optimization for emerging hardware and applications.

Keywords:
database systemsfile systemsfragmentationmonitoringtoolvisualization

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Area of Science:

  • Computer Science
  • File Systems
  • Performance Optimization

Background:

  • Emerging hardware like NVMe SSDs and RISC-V enhance computer performance.
  • Applications increasingly utilize hardware resources, leading to potential file system overheads.
  • Fragmentation issues in file systems can significantly impact performance.

Purpose of the Study:

  • To investigate the causes of fragmentation in the F2FS file system.
  • To introduce FragTracer, a real-time tool for analyzing file system fragmentation.
  • To evaluate the performance overhead of the fragmentation analysis tool.

Main Methods:

  • Developed FragTracer with monitoring, pre-processing, and visualization modules for automated analysis.
  • Optimized FragTracer for low performance overhead during on-the-fly tracking.
  • Evaluated FragTracer using three real-world databases on the F2FS file system.

Main Results:

  • FragTracer effectively analyzes fragmentation ratios in real-time.
  • The tool's performance overhead was found to be negligible in commodity computing environments.
  • Fragmentation characteristics induced by databases on F2FS were studied.

Conclusions:

  • FragTracer provides a user-friendly and efficient solution for identifying file system fragmentation.
  • The tool's minimal overhead makes it suitable for practical, real-time system analysis.
  • Understanding fragmentation is crucial for optimizing performance with advanced hardware and applications.