spdlog/example/bench.cpp

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//
// Copyright(c) 2015 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
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//
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// bench.cpp : spdlog benchmarks
//
#include <atomic>
#include <cstdlib> // EXIT_FAILURE
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#include <iostream>
#include <memory>
#include <string>
#include <thread>
#include "spdlog/spdlog.h"
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#include "spdlog/async_logger.h"
#include "spdlog/sinks/file_sinks.h"
#include "spdlog/sinks/null_sink.h"
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#include "utils.h"
using namespace std;
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using namespace std::chrono;
using namespace spdlog;
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using namespace spdlog::sinks;
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using namespace utils;
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void bench(int howmany, std::shared_ptr<spdlog::logger> log);
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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int queue_size = 1048576;
int howmany = 1000000;
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int threads = 10;
int file_size = 30 * 1024 * 1024;
int rotating_files = 5;
try
{
if(argc > 1)
howmany = atoi(argv[1]);
if (argc > 2)
threads = atoi(argv[2]);
if (argc > 3)
queue_size = atoi(argv[3]);
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cout << "*******************************************************************************\n";
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cout << "Single thread, " << format(howmany) << " iterations" << endl;
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cout << "*******************************************************************************\n";
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auto rotating_st = spdlog::rotating_logger_st("rotating_st", "logs/rotating_st", 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");
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bench(howmany, daily_st);
bench(howmany, spdlog::create<null_sink_st>("null_st"));
cout << "\n*******************************************************************************\n";
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cout << threads << " threads sharing same logger, " << format(howmany) << " iterations" << endl;
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cout << "*******************************************************************************\n";
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auto rotating_mt = spdlog::rotating_logger_mt("rotating_mt", "logs/rotating_mt", 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");
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bench_mt(howmany, daily_mt, threads);
bench(howmany, spdlog::create<null_sink_st>("null_mt"));
cout << "\n*******************************************************************************\n";
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cout << "async logging.. " << threads << " threads sharing same logger, " << format(howmany) << " iterations " << endl;
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cout << "*******************************************************************************\n";
spdlog::set_async_mode(queue_size);
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for(int i = 0; i < 3; ++i)
{
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auto as = spdlog::daily_logger_st("as", "logs/daily_async");
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bench_mt(howmany, as, threads);
spdlog::drop("as");
}
}
catch (std::exception &ex)
{
std::cerr << "Error: " << ex.what() << std::endl;
perror("Last error");
return EXIT_FAILURE;
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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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cout << log->name() << "...\t\t" << flush;
auto start = system_clock::now();
for (auto i = 0; i < howmany; ++i)
{
log->info("Hello logger: msg number {}", i);
}
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auto delta = system_clock::now() - start;
auto delta_d = duration_cast<duration<double>> (delta).count();
cout << format(int(howmany / delta_d)) << "/sec" << endl;
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}
void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count)
{
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cout << log->name() << "...\t\t" << flush;
std::atomic<int > msg_counter {0};
vector<thread> threads;
auto start = system_clock::now();
for (int t = 0; t < thread_count; ++t)
{
threads.push_back(std::thread([&]()
{
for(;;)
{
int counter = ++msg_counter;
if (counter > howmany) break;
log->info("Hello logger: msg number {}", counter);
}
}));
}
for(auto &t:threads)
{
t.join();
};
auto delta = system_clock::now() - start;
auto delta_d = duration_cast<duration<double>> (delta).count();
cout << format(int(howmany / delta_d)) << "/sec" << endl;
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}