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19 lines
739 B
Markdown
19 lines
739 B
Markdown
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# Benchmark for `sys/atomic_utils`
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This application will perform 100.000 repetitions (or 1.000.000 on
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Cortex-M7 and ESP32) for each atomic operation and will print the total time it
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took in a table. For comparison, the speed of C11 atomics and plain `volatile`
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accesses are also printed.
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## Expectations
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Lower is better!
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Plain `volatile` accesses are not atomic, and therefore should perform faster
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than actual atomic operations. If atomic operations turn out to be faster
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(by more than rounding errors and noise), something is odd.
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The `atomic_utils` aim to be at least as fast as C11 atomics and often faster.
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If the `atomic_utils` implementation performs slower than C11 atomics, you have
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found potential for further optimization.
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