tldr/pages/common/fio.md

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# fio
> Flexible I/O tester.
> Tool that will spawn a number of threads or processes doing a particular type of I/O action.
> More information: <https://fio.readthedocs.io/en/latest/fio_doc.html>.
- Test random reads:
`fio --filename={{path/to/file}} --direct=1 --rw=randread --bs=4k --ioengine=libaio --iodepth=256 --runtime=120 --numjobs=4 --time_based --group_reporting --name={{job_name}} --eta-newline=1 --readonly`
- Test sequential reads:
`fio --filename={{path/to/file}} --direct=1 --rw=read --bs=4k --ioengine=libaio --iodepth=256 --runtime=120 --numjobs=4 --time_based --group_reporting --name={{job_name}} --eta-newline=1 --readonly`
- Test random read/write:
`fio --filename={{path/to/file}} --direct=1 --rw=randrw --bs=4k --ioengine=libaio --iodepth=256 --runtime=120 --numjobs=4 --time_based --group_reporting --name={{job_name}} --eta-newline=1`
- Test with parameters from a job file:
`fio {{path/to/job_file}}`
- Convert a specific job file to command-line options:
`fio --showcmd {{path/to/job_file}}`