This directory includes a few programs that demonstrate how to use io_uring
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in an application. The examples are:
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io_uring-cp
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A very basic io_uring implementation of cp(1). It takes two
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arguments, copies the first argument to the second. This example
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is part of liburing, and hence uses the simplified liburing API
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for setting up an io_uring instance, submitting IO, completing IO,
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etc. The support functions in queue.c and setup.c are straight
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out of liburing.
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io_uring-bench
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Benchmark program that does random reads on a number of files. This
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app demonstrates the various features of io_uring, like fixed files,
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fixed buffers, and polled IO. There are options in the program to
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control which features to use. Arguments is the file (or files) that
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io_uring-bench should operate on. This uses the raw io_uring
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interface.
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liburing can be cloned with git here:
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git://git.kernel.dk/liburing
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and contains a number of unit tests as well for testing io_uring. It also
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comes with man pages for the three system calls.
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Fio includes an io_uring engine, you can clone fio here:
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git://git.kernel.dk/fio
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