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When it is not easily possible to stabilize benchmark machine and code the argument -min_time can be used to specify a minimum duration that a benchmark should take. E.g. choose -min_time=1000 if you are willing to wait about 1 second for each benchmark result. The default is now set to 10ms instead of 0, which should make runs on fast machines more stable with negligible slowdown.
69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
// Copyright (c) 2015-2020 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 <crypto/sha256.h>
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#include <util/strencodings.h>
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#include <util/system.h>
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#include <memory>
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static const char* DEFAULT_BENCH_FILTER = ".*";
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static constexpr int64_t DEFAULT_MIN_TIME_MS{10};
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static void SetupBenchArgs(ArgsManager& argsman)
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{
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SetupHelpOptions(argsman);
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argsman.AddArg("-asymptote=n1,n2,n3,...", "Test asymptotic growth of the runtime of an algorithm, if supported by the benchmark", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
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argsman.AddArg("-filter=<regex>", strprintf("Regular expression filter to select benchmark by name (default: %s)", DEFAULT_BENCH_FILTER), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
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argsman.AddArg("-list", "List benchmarks without executing them", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
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argsman.AddArg("-min_time=<milliseconds>", strprintf("Minimum runtime per benchmark, in milliseconds (default: %d)", DEFAULT_MIN_TIME_MS), ArgsManager::ALLOW_INT, OptionsCategory::OPTIONS);
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argsman.AddArg("-output_csv=<output.csv>", "Generate CSV file with the most important benchmark results", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
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argsman.AddArg("-output_json=<output.json>", "Generate JSON file with all benchmark results", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
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}
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// parses a comma separated list like "10,20,30,50"
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static std::vector<double> parseAsymptote(const std::string& str) {
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std::stringstream ss(str);
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std::vector<double> numbers;
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double d;
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char c;
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while (ss >> d) {
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numbers.push_back(d);
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ss >> c;
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}
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return numbers;
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}
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int main(int argc, char** argv)
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{
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ArgsManager argsman;
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SetupBenchArgs(argsman);
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SHA256AutoDetect();
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std::string error;
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if (!argsman.ParseParameters(argc, argv, error)) {
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tfm::format(std::cerr, "Error parsing command line arguments: %s\n", error);
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return EXIT_FAILURE;
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}
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if (HelpRequested(argsman)) {
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std::cout << argsman.GetHelpMessage();
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return EXIT_SUCCESS;
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}
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benchmark::Args args;
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args.regex_filter = argsman.GetArg("-filter", DEFAULT_BENCH_FILTER);
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args.is_list_only = argsman.GetBoolArg("-list", false);
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args.asymptote = parseAsymptote(argsman.GetArg("-asymptote", ""));
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args.min_time = std::chrono::milliseconds(argsman.GetArg("-min_time", DEFAULT_MIN_TIME_MS));
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args.output_csv = argsman.GetArg("-output_csv", "");
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args.output_json = argsman.GetArg("-output_json", "");
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benchmark::BenchRunner::RunAll(args);
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return EXIT_SUCCESS;
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}
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