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`HexStrBench` uses the bytes from the embedded block fixture as a random source of bytes to measure `HexStr` performance against.
This coupling makes block benchmark migrations slightly more work than necessary.
We can use deterministic pseudo-random bytes instead so this benchmark keeps stable input without fixture coupling.
Use `MAX_BLOCK_WEIGHT` so the benchmark stays in the same size range and keeps measured work above harness overhead.
This changes the benchmark baseline because input size moves from about 1 MB to 4 MB.
Co-authored-by: MarcoFalke <*~=`'#}+{/-|&$^_@721217.xyz>
Co-authored-by: Hodlinator <172445034+hodlinator@users.noreply.github.com>
24 lines
678 B
C++
24 lines
678 B
C++
// Copyright (c) 2022-present The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <bench/bench.h>
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#include <consensus/consensus.h>
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#include <random.h>
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#include <span.h>
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#include <util/strencodings.h>
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#include <vector>
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static void HexStrBench(benchmark::Bench& bench)
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{
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FastRandomContext rng{/*fDeterministic=*/true};
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auto data{rng.randbytes<std::byte>(MAX_BLOCK_WEIGHT)};
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bench.batch(data.size()).unit("byte").run([&] {
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auto hex = HexStr(data);
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ankerl::nanobench::doNotOptimizeAway(hex);
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});
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}
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BENCHMARK(HexStrBench);
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