spdlog/bench/spdlog-null-async.cpp

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