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Shamelessly copy Josiah
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jordan4ibanez
34
source/lib/json/tests/benchmarks/CMakeLists.txt
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34
source/lib/json/tests/benchmarks/CMakeLists.txt
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cmake_minimum_required(VERSION 3.11...3.14)
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project(JSON_Benchmarks LANGUAGES CXX)
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# set compiler flags
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if((CMAKE_CXX_COMPILER_ID MATCHES GNU) OR (CMAKE_CXX_COMPILER_ID MATCHES Clang))
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto -DNDEBUG -O3")
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endif()
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# configure Google Benchmarks
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include(FetchContent)
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FetchContent_Declare(
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benchmark
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GIT_REPOSITORY https://github.com/google/benchmark.git
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GIT_TAG origin/main
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GIT_SHALLOW TRUE
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)
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FetchContent_GetProperties(benchmark)
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if(NOT benchmark_POPULATED)
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FetchContent_Populate(benchmark)
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set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "" FORCE)
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add_subdirectory(${benchmark_SOURCE_DIR} ${benchmark_BINARY_DIR})
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endif()
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# download test data
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set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../cmake ${CMAKE_MODULE_PATH})
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include(download_test_data)
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# benchmark binary
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add_executable(json_benchmarks src/benchmarks.cpp)
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target_compile_features(json_benchmarks PRIVATE cxx_std_11)
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target_link_libraries(json_benchmarks benchmark ${CMAKE_THREAD_LIBS_INIT})
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add_dependencies(json_benchmarks download_test_data)
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target_include_directories(json_benchmarks PRIVATE ${CMAKE_SOURCE_DIR}/../../single_include ${CMAKE_BINARY_DIR}/include)
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177
source/lib/json/tests/benchmarks/src/benchmarks.cpp
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177
source/lib/json/tests/benchmarks/src/benchmarks.cpp
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// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++ (supporting code)
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// | | |__ | | | | | | version 3.11.2
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// SPDX-FileCopyrightText: 2013-2022 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#include <benchmark/benchmark.h>
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#include <nlohmann/json.hpp>
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#include <fstream>
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#include <numeric>
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#include <vector>
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#include <test_data.hpp>
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using json = nlohmann::json;
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//////////////////////////////////////////////////////////////////////////////
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// parse JSON from file
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//////////////////////////////////////////////////////////////////////////////
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static void ParseFile(benchmark::State& state, const char* filename)
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{
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while (state.KeepRunning())
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{
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state.PauseTiming();
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auto* f = new std::ifstream(filename);
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auto* j = new json();
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state.ResumeTiming();
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*j = json::parse(*f);
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state.PauseTiming();
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delete f;
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delete j;
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state.ResumeTiming();
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}
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std::ifstream file(filename, std::ios::binary | std::ios::ate);
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state.SetBytesProcessed(state.iterations() * file.tellg());
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}
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BENCHMARK_CAPTURE(ParseFile, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ParseFile, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ParseFile, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ParseFile, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ParseFile, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
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BENCHMARK_CAPTURE(ParseFile, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
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BENCHMARK_CAPTURE(ParseFile, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
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BENCHMARK_CAPTURE(ParseFile, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
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//////////////////////////////////////////////////////////////////////////////
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// parse JSON from string
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//////////////////////////////////////////////////////////////////////////////
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static void ParseString(benchmark::State& state, const char* filename)
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{
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std::ifstream f(filename);
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std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
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while (state.KeepRunning())
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{
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state.PauseTiming();
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auto* j = new json();
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state.ResumeTiming();
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*j = json::parse(str);
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state.PauseTiming();
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delete j;
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state.ResumeTiming();
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}
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state.SetBytesProcessed(state.iterations() * str.size());
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}
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BENCHMARK_CAPTURE(ParseString, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ParseString, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ParseString, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ParseString, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ParseString, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
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BENCHMARK_CAPTURE(ParseString, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
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BENCHMARK_CAPTURE(ParseString, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
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BENCHMARK_CAPTURE(ParseString, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
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//////////////////////////////////////////////////////////////////////////////
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// serialize JSON
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//////////////////////////////////////////////////////////////////////////////
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static void Dump(benchmark::State& state, const char* filename, int indent)
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{
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std::ifstream f(filename);
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std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
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json j = json::parse(str);
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while (state.KeepRunning())
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{
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j.dump(indent);
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}
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state.SetBytesProcessed(state.iterations() * j.dump(indent).size());
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}
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BENCHMARK_CAPTURE(Dump, jeopardy / -, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json", -1);
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BENCHMARK_CAPTURE(Dump, jeopardy / 4, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json", 4);
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BENCHMARK_CAPTURE(Dump, canada / -, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json", -1);
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BENCHMARK_CAPTURE(Dump, canada / 4, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json", 4);
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BENCHMARK_CAPTURE(Dump, citm_catalog / -, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json", -1);
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BENCHMARK_CAPTURE(Dump, citm_catalog / 4, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json", 4);
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BENCHMARK_CAPTURE(Dump, twitter / -, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json", -1);
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BENCHMARK_CAPTURE(Dump, twitter / 4, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json", 4);
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BENCHMARK_CAPTURE(Dump, floats / -, TEST_DATA_DIRECTORY "/regression/floats.json", -1);
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BENCHMARK_CAPTURE(Dump, floats / 4, TEST_DATA_DIRECTORY "/regression/floats.json", 4);
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BENCHMARK_CAPTURE(Dump, signed_ints / -, TEST_DATA_DIRECTORY "/regression/signed_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, signed_ints / 4, TEST_DATA_DIRECTORY "/regression/signed_ints.json", 4);
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BENCHMARK_CAPTURE(Dump, unsigned_ints / -, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, unsigned_ints / 4, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json", 4);
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BENCHMARK_CAPTURE(Dump, small_signed_ints / -, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, small_signed_ints / 4, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json", 4);
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//////////////////////////////////////////////////////////////////////////////
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// serialize CBOR
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//////////////////////////////////////////////////////////////////////////////
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static void ToCbor(benchmark::State& state, const char* filename)
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{
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std::ifstream f(filename);
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std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
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json j = json::parse(str);
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while (state.KeepRunning())
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{
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json::to_cbor(j);
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}
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state.SetBytesProcessed(state.iterations() * json::to_cbor(j).size());
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}
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BENCHMARK_CAPTURE(ToCbor, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ToCbor, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ToCbor, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ToCbor, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ToCbor, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
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BENCHMARK_CAPTURE(ToCbor, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
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BENCHMARK_CAPTURE(ToCbor, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
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BENCHMARK_CAPTURE(ToCbor, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
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//////////////////////////////////////////////////////////////////////////////
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// serialize binary CBOR
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//////////////////////////////////////////////////////////////////////////////
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static void BinaryToCbor(benchmark::State& state)
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{
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std::vector<uint8_t> data(256);
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std::iota(data.begin(), data.end(), 0);
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auto it = data.begin();
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std::vector<uint8_t> in;
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in.reserve(state.range(0));
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for (int i = 0; i < state.range(0); ++i)
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{
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if (it == data.end())
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{
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it = data.begin();
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}
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in.push_back(*it);
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++it;
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}
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json::binary_t bin{in};
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json j{{"type", "binary"}, {"data", bin}};
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while (state.KeepRunning())
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{
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json::to_cbor(j);
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}
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state.SetBytesProcessed(state.iterations() * json::to_cbor(j).size());
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}
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BENCHMARK(BinaryToCbor)->RangeMultiplier(2)->Range(8, 8 << 12);
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BENCHMARK_MAIN();
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