Welcome to FIO’s documentation!

Version: 3.38-19-gd1eb

Contents:

• 1. fio - Flexible I/O tester rev. 3.38
  • 1.1. Overview and history
  • 1.2. Source
  • 1.3. Mailing list
  • 1.4. Author
  • 1.5. Maintainers
  • 1.6. Binary packages
  • 1.7. Building
    • 1.7.1. Windows
    • 1.7.2. Documentation
  • 1.8. Platforms
  • 1.9. Running fio
  • 1.10. How fio works
  • 1.11. Command line options
  • 1.12. Job file format
    • 1.12.1. Environment variables
    • 1.12.2. Reserved keywords
  • 1.13. Job file parameters
    • 1.13.1. Parameter types
    • 1.13.2. Units
    • 1.13.3. Job description
    • 1.13.4. Time related parameters
    • 1.13.5. Target file/device
    • 1.13.6. I/O type
    • 1.13.7. Block size
    • 1.13.8. Buffers and memory
    • 1.13.9. I/O size
    • 1.13.10. I/O engine
    • 1.13.11. I/O engine specific parameters
    • 1.13.12. I/O depth
    • 1.13.13. I/O rate
    • 1.13.14. I/O latency
    • 1.13.15. I/O replay
    • 1.13.16. Threads, processes and job synchronization
    • 1.13.17. Verification
    • 1.13.18. Steady state
    • 1.13.19. Measurements and reporting
    • 1.13.20. Error handling
  • 1.14. Running predefined workloads
    • 1.14.1. Act profile options
    • 1.14.2. Tiobench profile options
  • 1.15. Interpreting the output
  • 1.16. Terse output
  • 1.17. JSON output
  • 1.18. JSON+ output
  • 1.19. Trace file format
    • 1.19.1. Trace file format v1
    • 1.19.2. Trace file format v2
    • 1.19.3. Trace file format v3
  • 1.20. I/O Replay - Merging Traces
  • 1.21. CPU idleness profiling
  • 1.22. Verification and triggers
    • 1.22.1. Verification trigger example
    • 1.22.2. Loading verify state
  • 1.23. Log File Formats
  • 1.24. Client/Server
• 2. Examples
  • 2.1. Poisson request flow
  • 2.2. Latency profile
  • 2.3. Read 4 files with aio at different depths
  • 2.4. Read backwards in a file
  • 2.5. Basic verification
  • 2.6. Fixed rate submission
  • 2.7. Butterfly seek pattern
• 3. TODO
  • 3.1. GFIO TODO
  • 3.2. Server TODO
  • 3.3. Steady State TODO
• 4. Moral License
• 5. License

Indices and tables

• Index

• Search Page