Use google benchmark to test latency
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@ -1,5 +1,5 @@
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CXX ?= g++
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CXXFLAGS = -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -I../include -fmax-errors=1
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CXXFLAGS = -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -I../include -fmax-errors=1
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CXX_RELEASE_FLAGS = -Ofast -flto -Wl,--no-as-needed
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@ -16,7 +16,7 @@ async_bench: async_bench.cpp
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latency: latency.cpp
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$(CXX) latency.cpp -o latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
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$(CXX) latency.cpp -o latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -lbenchmark
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.PHONY: clean
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@ -7,6 +7,8 @@
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// latency.cpp : spdlog latency benchmarks
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//
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#include "benchmark/benchmark.h"
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#include "spdlog/spdlog.h"
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#include "spdlog/async.h"
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#include "spdlog/sinks/basic_file_sink.h"
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@ -14,6 +16,7 @@
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#include "spdlog/sinks/null_sink.h"
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#include "spdlog/sinks/rotating_file_sink.h"
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#include "utils.h"
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#include <atomic>
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#include <cstdlib>
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@ -31,123 +34,51 @@ using namespace utils;
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void bench(int howmany, std::shared_ptr<spdlog::logger> log);
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void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
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int main(int, char *[])
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void bench_c_string(benchmark::State& state, std::shared_ptr<spdlog::logger> logger)
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{
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std::srand(static_cast<unsigned>(std::time(nullptr))); // use current time as seed for random generator
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int howmany = 1000000;
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int queue_size = howmany + 2;
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int threads = 10;
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size_t file_size = 30 * 1024 * 1024;
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size_t rotating_files = 5;
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const char *msg = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra metus cursus "
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"lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus volutpat mi, eu consequat sem "
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"libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam non dapibus eros. Donec fringilla dui sed "
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"augue pretium, nec scelerisque est maximus. Nullam convallis, sem nec blandit maximus, nisi turpis ornare "
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"nisl, sit amet volutpat neque massa eu odio. Maecenas malesuada quam ex, posuere congue nibh turpis duis.";
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try
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for (auto _ : state)
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{
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cout << "******************************************************************"
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"*************\n";
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cout << "Single thread\n";
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cout << "******************************************************************"
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"*************\n";
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auto basic_st = spdlog::basic_logger_mt("basic_st", "logs/basic_st.log", true);
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bench(howmany, basic_st);
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auto rotating_st = spdlog::rotating_logger_st("rotating_st", "logs/rotating_st.log", file_size, rotating_files);
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bench(howmany, rotating_st);
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auto daily_st = spdlog::daily_logger_st("daily_st", "logs/daily_st.log");
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bench(howmany, daily_st);
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bench(howmany, spdlog::create<null_sink_st>("null_st"));
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cout << "\n****************************************************************"
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"***************\n";
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cout << threads << " threads sharing same logger\n";
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cout << "******************************************************************"
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"*************\n";
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auto basic_mt = spdlog::basic_logger_mt("basic_mt", "logs/basic_mt.log", true);
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bench_mt(howmany, basic_mt, threads);
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auto rotating_mt = spdlog::rotating_logger_mt("rotating_mt", "logs/rotating_mt.log", file_size, rotating_files);
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bench_mt(howmany, rotating_mt, threads);
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auto daily_mt = spdlog::daily_logger_mt("daily_mt", "logs/daily_mt.log");
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bench_mt(howmany, daily_mt, threads);
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bench(howmany, spdlog::create<null_sink_st>("null_mt"));
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cout << "\n****************************************************************"
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"***************\n";
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cout << "async logging.. " << threads << " threads sharing same logger\n";
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cout << "******************************************************************"
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"*************\n";
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for (int i = 0; i < 3; ++i)
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{
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spdlog::init_thread_pool(static_cast<size_t>(queue_size), 1);
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auto as = spdlog::basic_logger_mt<spdlog::async_factory>("async", "logs/basic_async.log", true);
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bench_mt(howmany, as, threads);
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spdlog::drop("async");
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}
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logger->info(msg);
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}
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catch (std::exception &ex)
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{
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std::cerr << "Error: " << ex.what() << std::endl;
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perror("Last error");
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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void bench(int howmany, std::shared_ptr<spdlog::logger> log)
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void bench_formatted_int(benchmark::State& state, std::shared_ptr<spdlog::logger> logger)
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{
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using namespace std::chrono;
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using chrono::high_resolution_clock;
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using chrono::milliseconds;
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using chrono::nanoseconds;
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cout << log->name() << "...\t\t" << flush;
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nanoseconds total_nanos = nanoseconds::zero();
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for (auto i = 0; i < howmany; ++i)
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int i = 0;
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for (auto _ : state)
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{
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auto start = high_resolution_clock::now();
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log->info("Hello logger: msg number {}", i);
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auto delta_nanos = chrono::duration_cast<nanoseconds>(high_resolution_clock::now() - start);
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total_nanos += delta_nanos;
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logger->info("Hello message {} {} {}", ++i, i , i);
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}
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auto avg = total_nanos.count() / howmany;
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cout << format(avg) << " ns/call" << endl;
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}
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void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count)
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int main(int argc, char *argv[])
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{
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using namespace std::chrono;
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using chrono::high_resolution_clock;
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using chrono::milliseconds;
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using chrono::nanoseconds;
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cout << log->name() << "...\t\t" << flush;
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vector<thread> threads;
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std::atomic<nanoseconds::rep> total_nanos{0};
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for (int t = 0; t < thread_count; ++t)
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{
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threads.push_back(std::thread([&]() {
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for (int j = 0; j < howmany / thread_count; j++)
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{
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auto start = high_resolution_clock::now();
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log->info("Hello logger: msg number {}", j);
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auto delta_nanos = chrono::duration_cast<nanoseconds>(high_resolution_clock::now() - start);
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total_nanos += delta_nanos.count();
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}
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}));
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}
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using spdlog::sinks::null_sink_st ;
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using spdlog::sinks::null_sink_mt ;
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for (auto &t : threads)
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{
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t.join();
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};
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auto null_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
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benchmark::RegisterBenchmark("null_sink_st-500_bytes_cstr", bench_c_string, null_logger);
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benchmark::RegisterBenchmark("null_sink_st-formatted_int", bench_formatted_int, null_logger);
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// 10 threads
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int n_threads = 10;
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null_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
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benchmark::RegisterBenchmark("null_sink_mt-500_bytes_cstr", bench_c_string, null_logger) -> Threads(n_threads);
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benchmark::RegisterBenchmark("null_sink_mt-formatted_int", bench_formatted_int, null_logger) ->Threads(n_threads);
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benchmark::Initialize(&argc, argv);
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benchmark::RunSpecifiedBenchmarks();
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auto avg = total_nanos / howmany;
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cout << format(avg) << " ns/call" << endl;
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}
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