mirror of
https://github.com/zeromq/libzmq.git
synced 2024-12-28 16:15:23 +08:00
3659c1204a
* Problem: radix tree needs benchmarks and improvements Solution: add a benchmark and make suggested improvements
124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
/*
|
|
Copyright (c) 2018 Contributors as noted in the AUTHORS file
|
|
|
|
This file is part of libzmq, the ZeroMQ core engine in C++.
|
|
|
|
libzmq is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU Lesser General Public License (LGPL) as published
|
|
by the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
As a special exception, the Contributors give you permission to link
|
|
this library with independent modules to produce an executable,
|
|
regardless of the license terms of these independent modules, and to
|
|
copy and distribute the resulting executable under terms of your choice,
|
|
provided that you also meet, for each linked independent module, the
|
|
terms and conditions of the license of that module. An independent
|
|
module is a module which is not derived from or based on this library.
|
|
If you modify this library, you must extend this exception to your
|
|
version of the library.
|
|
|
|
libzmq 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 Lesser General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#if __cplusplus >= 201103L
|
|
|
|
#include "radix_tree.hpp"
|
|
#include "trie.hpp"
|
|
|
|
#include <chrono>
|
|
#include <cstddef>
|
|
#include <cstdio>
|
|
#include <random>
|
|
#include <vector>
|
|
|
|
const std::size_t nkeys = 10000;
|
|
const std::size_t nqueries = 100000;
|
|
const std::size_t warmup_runs = 10;
|
|
const std::size_t samples = 10;
|
|
const std::size_t key_length = 20;
|
|
const char *chars = "abcdefghijklmnopqrstuvwxyz0123456789";
|
|
const int chars_len = 36;
|
|
|
|
template <class T>
|
|
void benchmark_lookup (T &t,
|
|
std::vector<unsigned char *> &input_set,
|
|
std::vector<unsigned char *> &queries)
|
|
{
|
|
std::puts ("Starting warmup...");
|
|
for (std::size_t run = 0; run < warmup_runs; ++run) {
|
|
for (auto &query : queries)
|
|
t.check (query, key_length);
|
|
}
|
|
|
|
std::puts ("Collecting samples...");
|
|
std::vector<double> samples_vec;
|
|
samples_vec.reserve (samples);
|
|
for (std::size_t run = 0; run < samples; ++run) {
|
|
auto start = std::chrono::high_resolution_clock::now ();
|
|
for (auto &query : queries)
|
|
t.check (query, key_length);
|
|
auto end = std::chrono::high_resolution_clock::now ();
|
|
samples_vec.push_back (
|
|
std::chrono::duration_cast<std::chrono::milliseconds> ((end - start))
|
|
.count ());
|
|
}
|
|
|
|
for (const auto &sample : samples_vec)
|
|
std::printf ("%.2lf\n", sample);
|
|
}
|
|
|
|
int main ()
|
|
{
|
|
// Generate input set.
|
|
std::minstd_rand rng (123456789);
|
|
std::vector<unsigned char *> input_set;
|
|
std::vector<unsigned char *> queries;
|
|
input_set.reserve (nkeys);
|
|
queries.reserve (nqueries);
|
|
|
|
for (std::size_t i = 0; i < nkeys; ++i) {
|
|
unsigned char *key = new unsigned char[key_length];
|
|
for (std::size_t j = 0; j < key_length; j++)
|
|
key[j] = static_cast<unsigned char> (chars[rng () % chars_len]);
|
|
input_set.emplace_back (key);
|
|
}
|
|
for (std::size_t i = 0; i < nqueries; ++i)
|
|
queries.push_back (input_set[rng () % nkeys]);
|
|
|
|
// Initialize both data structures.
|
|
//
|
|
// Keeping initialization out of the benchmarking function helps
|
|
// heaptrack detect peak memory consumption of the radix tree.
|
|
zmq::trie_t trie;
|
|
zmq::radix_tree radix_tree;
|
|
for (auto &key : input_set) {
|
|
trie.add (key, key_length);
|
|
radix_tree.add (key, key_length);
|
|
}
|
|
|
|
// Create a benchmark.
|
|
std::puts ("[trie]");
|
|
benchmark_lookup (trie, input_set, queries);
|
|
|
|
std::puts ("[radix_tree]");
|
|
benchmark_lookup (radix_tree, input_set, queries);
|
|
|
|
for (auto &op : input_set)
|
|
delete[] op;
|
|
}
|
|
|
|
#else
|
|
|
|
int main ()
|
|
{
|
|
}
|
|
|
|
#endif
|