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/*
* Copyright (C) 2014-2023 Savoir-faire Linux Inc.
*
* Author: Adrien Béraud <adrien.beraud@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "tools_common.h"
#include <opendht/node.h>
extern "C" {
#include <gnutls/gnutls.h>
}
#include <condition_variable>
#include <mutex>
#include <atomic>
void print_usage() {
std::cout << "Usage: perftest" << std::endl << std::endl;
std::cout << "perftest, a simple OpenDHT basic performance tester." << std::endl;
std::cout << "Report bugs to: https://opendht.net" << std::endl;
}
constexpr unsigned PINGPONG_MAX = 2048;
using namespace dht;
namespace tests {
using clock = std::chrono::high_resolution_clock;
using duration = clock::duration;
duration
benchPingPong(unsigned netSize, unsigned n_parallel) {
DhtRunner::Config config {};
config.dht_config.node_config.max_peer_req_per_sec = -1;
config.dht_config.node_config.max_req_per_sec = -1;
DhtRunner ping_node, pong_node;
std::vector<std::pair<InfoHash, InfoHash>> locs;
locs.reserve(n_parallel);
for (unsigned i=0; i<n_parallel; i++) {
auto loc_ping = InfoHash::get("toto" + std::to_string(i));
locs.emplace_back(loc_ping, InfoHash::get(loc_ping.toString()));
}
ping_node.run(0, config);
pong_node.run(0, config);
auto bindAddr = ping_node.getBound();
pong_node.bootstrap(bindAddr);
std::vector<std::unique_ptr<DhtRunner>> nodes;
nodes.reserve(netSize);
for (unsigned i=0; i<netSize; i++) {
auto node = std::make_unique<DhtRunner>();
node->run(0, config);
node->bootstrap(bindAddr);
nodes.emplace_back(std::move(node));
}
// std::this_thread::sleep_for(std::chrono::seconds(1));
std::condition_variable cv;
unsigned i {0};
std::mutex m;
unsigned max = PINGPONG_MAX * n_parallel;
auto ping = [&](DhtRunner& node, InfoHash h) {
std::lock_guard<std::mutex> lk(m);
if (i < max) {
i++;
node.put(h, Value("hey"));
}
cv.notify_one();
};
for (unsigned i=0; i<n_parallel; i++) {
ping_node.listen(locs[i].first, [&,i](const std::shared_ptr<Value>&){
ping(pong_node, locs[i].second);
return true;
});
pong_node.listen(locs[i].second, [&,i](const std::shared_ptr<Value>&){
ping(ping_node, locs[i].first);
return true;
});
}
auto start = clock::now();
for (unsigned i=0; i<n_parallel; i++)
ping(pong_node, locs[i].first);
{
std::unique_lock<std::mutex> lk(m);
if (not cv.wait_for(lk, std::chrono::minutes(1), [&](){ return i == max; })) {
throw std::runtime_error(std::string("Timeout: ") + std::to_string(i));
}
}
auto end = clock::now();
for (auto& node : nodes)
node->shutdown();
ping_node.shutdown();
pong_node.shutdown();
for (auto& node : nodes)
node->join();
ping_node.join();
pong_node.join();
return end-start;
}
}
int
main(int argc, char **argv)
{
#ifdef _MSC_VER
gnutls_global_init();
#endif
auto params = parseArgs(argc, argv);
if (params.help) {
print_usage();
return 0;
}
duration totalTime {0};
unsigned totalOps {0};
for (unsigned nparallel = 1; nparallel <= 32; nparallel *= 2) {
unsigned max = PINGPONG_MAX * nparallel;
std::vector<duration> results {};
results.reserve(8);
duration total {0};
for (unsigned i=2; i<32; i *= 2) {
auto dt = tests::benchPingPong(i - 2, nparallel);
std::cout << "Network size: " << i << std::endl;
std::cout << max << " ping-pong done, took " << print_duration(dt) << std::endl;
std::cout << print_duration(dt/max) << " per rt, "
<< max/std::chrono::duration<double>(dt).count() << " ping per s" << std::endl << std::endl;
total += dt;
totalOps += max;
results.emplace_back(dt);
}
totalTime += total;
std::cout << "Total for " << nparallel << std::endl;
auto totNum = max*results.size();
std::cout << totNum << " ping-pong done, took " << print_duration(total) << std::endl;
std::cout << print_duration(total/totNum) << " per rt, "
<< totNum/std::chrono::duration<double>(total).count() << " ping per s" << std::endl << std::endl;
}
std::cout << std::endl << "Grand total: " << print_duration(totalTime) << " for " << totalOps << std::endl;
std::cout << print_duration(totalTime/totalOps) << " per rt, "
<< totalOps/std::chrono::duration<double>(totalTime).count() << " ping per s" << std::endl << std::endl;
#ifdef _MSC_VER
gnutls_global_deinit();
#endif
return 0;
}
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