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Use google benchmark to test latency

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gabime 2018-10-24 22:31:50 +03:00
parent 240a58fd6e
commit 121a7dcedf
2 changed files with 36 additions and 105 deletions
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4
bench/Makefile
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@ -1,5 +1,5 @@
CXX ?= g++
CXXFLAGS = -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -I../include -fmax-errors=1
CXXFLAGS = -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -I../include -fmax-errors=1
CXX_RELEASE_FLAGS = -Ofast -flto -Wl,--no-as-needed
@ -16,7 +16,7 @@ async_bench: async_bench.cpp
latency: latency.cpp
$(CXX) latency.cpp -o latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
$(CXX) latency.cpp -o latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -lbenchmark
.PHONY: clean

137
bench/latency.cpp
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@ -7,6 +7,8 @@
// latency.cpp : spdlog latency benchmarks
//
#include "benchmark/benchmark.h"
#include "spdlog/spdlog.h"
#include "spdlog/async.h"
#include "spdlog/sinks/basic_file_sink.h"
@ -14,6 +16,7 @@
#include "spdlog/sinks/null_sink.h"
#include "spdlog/sinks/rotating_file_sink.h"
#include "utils.h"
#include <atomic>
#include <cstdlib>
@ -31,123 +34,51 @@ using namespace utils;
void bench(int howmany, std::shared_ptr<spdlog::logger> log);
void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
int main(int, char *[])
void bench_c_string(benchmark::State& state, std::shared_ptr<spdlog::logger> logger)
{
std::srand(static_cast<unsigned>(std::time(nullptr))); // use current time as seed for random generator
int howmany = 1000000;
int queue_size = howmany + 2;
int threads = 10;
size_t file_size = 30 * 1024 * 1024;
size_t rotating_files = 5;
const char *msg = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra metus cursus "
"lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus volutpat mi, eu consequat sem "
"libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam non dapibus eros. Donec fringilla dui sed "
"augue pretium, nec scelerisque est maximus. Nullam convallis, sem nec blandit maximus, nisi turpis ornare "
"nisl, sit amet volutpat neque massa eu odio. Maecenas malesuada quam ex, posuere congue nibh turpis duis.";
try
for (auto _ : state)
{
cout << "******************************************************************"
"*************\n";
cout << "Single thread\n";
cout << "******************************************************************"
"*************\n";
auto basic_st = spdlog::basic_logger_mt("basic_st", "logs/basic_st.log", true);
bench(howmany, basic_st);
auto rotating_st = spdlog::rotating_logger_st("rotating_st", "logs/rotating_st.log", file_size, rotating_files);
bench(howmany, rotating_st);
auto daily_st = spdlog::daily_logger_st("daily_st", "logs/daily_st.log");
bench(howmany, daily_st);
bench(howmany, spdlog::create<null_sink_st>("null_st"));
cout << "\n****************************************************************"
"***************\n";
cout << threads << " threads sharing same logger\n";
cout << "******************************************************************"
"*************\n";
auto basic_mt = spdlog::basic_logger_mt("basic_mt", "logs/basic_mt.log", true);
bench_mt(howmany, basic_mt, threads);
auto rotating_mt = spdlog::rotating_logger_mt("rotating_mt", "logs/rotating_mt.log", file_size, rotating_files);
bench_mt(howmany, rotating_mt, threads);
auto daily_mt = spdlog::daily_logger_mt("daily_mt", "logs/daily_mt.log");
bench_mt(howmany, daily_mt, threads);
bench(howmany, spdlog::create<null_sink_st>("null_mt"));
cout << "\n****************************************************************"
"***************\n";
cout << "async logging.. " << threads << " threads sharing same logger\n";
cout << "******************************************************************"
"*************\n";
for (int i = 0; i < 3; ++i)
{
spdlog::init_thread_pool(static_cast<size_t>(queue_size), 1);
auto as = spdlog::basic_logger_mt<spdlog::async_factory>("async", "logs/basic_async.log", true);
bench_mt(howmany, as, threads);
spdlog::drop("async");
}
logger->info(msg);
}
catch (std::exception &ex)
{
std::cerr << "Error: " << ex.what() << std::endl;
perror("Last error");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
void bench(int howmany, std::shared_ptr<spdlog::logger> log)
void bench_formatted_int(benchmark::State& state, std::shared_ptr<spdlog::logger> logger)
{
using namespace std::chrono;
using chrono::high_resolution_clock;
using chrono::milliseconds;
using chrono::nanoseconds;
cout << log->name() << "...\t\t" << flush;
nanoseconds total_nanos = nanoseconds::zero();
for (auto i = 0; i < howmany; ++i)
int i = 0;
for (auto _ : state)
{
auto start = high_resolution_clock::now();
log->info("Hello logger: msg number {}", i);
auto delta_nanos = chrono::duration_cast<nanoseconds>(high_resolution_clock::now() - start);
total_nanos += delta_nanos;
logger->info("Hello message {} {} {}", ++i, i , i);
}
auto avg = total_nanos.count() / howmany;
cout << format(avg) << " ns/call" << endl;
}
void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count)
int main(int argc, char *argv[])
{
using namespace std::chrono;
using chrono::high_resolution_clock;
using chrono::milliseconds;
using chrono::nanoseconds;
cout << log->name() << "...\t\t" << flush;
vector<thread> threads;
std::atomic<nanoseconds::rep> total_nanos{0};
for (int t = 0; t < thread_count; ++t)
{
threads.push_back(std::thread([&]() {
for (int j = 0; j < howmany / thread_count; j++)
{
auto start = high_resolution_clock::now();
log->info("Hello logger: msg number {}", j);
auto delta_nanos = chrono::duration_cast<nanoseconds>(high_resolution_clock::now() - start);
total_nanos += delta_nanos.count();
}
}));
}
using spdlog::sinks::null_sink_st ;
using spdlog::sinks::null_sink_mt ;
for (auto &t : threads)
{
t.join();
};
auto null_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
benchmark::RegisterBenchmark("null_sink_st-500_bytes_cstr", bench_c_string, null_logger);
benchmark::RegisterBenchmark("null_sink_st-formatted_int", bench_formatted_int, null_logger);
// 10 threads
int n_threads = 10;
null_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
benchmark::RegisterBenchmark("null_sink_mt-500_bytes_cstr", bench_c_string, null_logger) -> Threads(n_threads);
benchmark::RegisterBenchmark("null_sink_mt-formatted_int", bench_formatted_int, null_logger) ->Threads(n_threads);
benchmark::Initialize(&argc, argv);
benchmark::RunSpecifiedBenchmarks();
auto avg = total_nanos / howmany;
cout << format(avg) << " ns/call" << endl;
}