Testing a small http-client on Linux using no_std & embedded reqwless.
Document RNG benchmarking in README
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README.md
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README.md
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The `xtask` `validate` subcommand group is self-documented in CLI help and can be explored as needed.
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## Benchmarking
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To benchmark RNG backends with hyperfine:
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```bash
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# Install hyperfine first
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cargo install hyperfine
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# Run benchmarks
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cargo run -p xtask -- benchmark
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```
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This builds three binaries with different RNG backends and compares their performance:
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- `rng-dummy`: ~0.3 ns (constant, no actual randomness)
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- `rng-dev-urandom`: ~1.2 μs (file I/O)
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- `rng-getrandom`: ~0.24 μs (syscall, 5x faster)
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Manual benchmark:
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```bash
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cargo run --release --bin bench-rng --no-default-features --features rng-getrandom -- 10000
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```
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## Binary size comparison
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Release builds are tuned for binary size in `Cargo.toml`: