944 lines
20 KiB
C++
944 lines
20 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/benchmark.h"
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#include "td/utils/common.h"
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#include "td/utils/logging.h"
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#include "td/utils/MpscPollableQueue.h"
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#include "td/utils/queue.h"
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// TODO: check system calls
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// TODO: all return values must be checked
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#include <atomic>
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#include <cstdio>
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#include <cstdlib>
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#include <vector>
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#include <pthread.h>
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#include <sched.h>
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#include <semaphore.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#if TD_LINUX
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#include <sys/eventfd.h>
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#endif
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using std::atomic;
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using std::vector;
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using td::int32;
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using td::uint32;
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#define MODE std::memory_order_relaxed
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// void set_affinity(int mask) {
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// int err, syscallres;
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// pid_t pid = gettid();
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// syscallres = syscall(__NR_sched_setaffinity, pid, sizeof(mask), &mask);
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// if (syscallres) {
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// err = errno;
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// perror("oppa");
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//}
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//}
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// TODO: warnings and asserts. There should be no warnings or debug output in production.
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using qvalue_t = int;
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// Just for testing, not production
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class PipeQueue {
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int input;
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int output;
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public:
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void init() {
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int new_pipe[2];
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pipe(new_pipe);
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output = new_pipe[0];
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input = new_pipe[1];
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}
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void put(qvalue_t value) {
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write(input, &value, sizeof(value));
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}
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qvalue_t get() {
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qvalue_t res;
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read(output, &res, sizeof(res));
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return res;
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}
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void destroy() {
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close(input);
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close(output);
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}
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};
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class Backoff {
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int cnt;
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public:
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Backoff() : cnt(0) {
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}
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bool next() {
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cnt++;
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if (cnt < 50) {
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return true;
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} else {
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sched_yield();
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return cnt < 500;
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}
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}
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};
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class VarQueue {
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atomic<qvalue_t> data;
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public:
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void init() {
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data.store(-1, MODE);
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}
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void put(qvalue_t value) {
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data.store(value, MODE);
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}
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qvalue_t try_get() {
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__sync_synchronize(); // TODO: it is wrong place for barrier, but it results in fastest queue
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qvalue_t res = data.load(MODE);
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return res;
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}
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void acquire() {
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data.store(-1, MODE);
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}
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qvalue_t get() {
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qvalue_t res;
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Backoff backoff;
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do {
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res = try_get();
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} while (res == -1 && (backoff.next(), true));
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acquire();
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return res;
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}
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void destroy() {
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}
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};
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class SemQueue {
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sem_t sem;
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VarQueue q;
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public:
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void init() {
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q.init();
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sem_init(&sem, 0, 0);
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}
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void put(qvalue_t value) {
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q.put(value);
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sem_post(&sem);
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}
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qvalue_t get() {
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sem_wait(&sem);
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qvalue_t res = q.get();
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return res;
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}
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void destroy() {
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q.destroy();
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sem_destroy(&sem);
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}
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// HACK for benchmark
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void reader_flush() {
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}
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void writer_flush() {
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}
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void writer_put(qvalue_t value) {
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put(value);
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}
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int reader_wait() {
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return 1;
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}
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qvalue_t reader_get_unsafe() {
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return get();
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}
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};
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#if TD_LINUX
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class EventfdQueue {
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int fd;
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VarQueue q;
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public:
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void init() {
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q.init();
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fd = eventfd(0, 0);
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}
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void put(qvalue_t value) {
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q.put(value);
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td::int64 x = 1;
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write(fd, &x, sizeof(x));
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}
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qvalue_t get() {
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td::int64 x;
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read(fd, &x, sizeof(x));
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return q.get();
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}
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void destroy() {
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q.destroy();
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close(fd);
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}
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};
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#endif
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const int queue_buf_size = 1 << 10;
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class BufferQueue {
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struct node {
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qvalue_t val;
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char pad[64 - sizeof(atomic<qvalue_t>)];
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};
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node q[queue_buf_size];
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struct Position {
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atomic<uint32> i;
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char pad[64 - sizeof(atomic<uint32>)];
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uint32 local_read_i;
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uint32 local_write_i;
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char pad2[64 - sizeof(uint32) * 2];
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void init() {
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i = 0;
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local_read_i = 0;
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local_write_i = 0;
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}
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};
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Position writer;
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Position reader;
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public:
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void init() {
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writer.init();
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reader.init();
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}
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bool reader_empty() {
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return reader.local_write_i == reader.local_read_i;
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}
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bool writer_empty() {
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return writer.local_write_i == writer.local_read_i + queue_buf_size;
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}
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int reader_ready() {
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return static_cast<int>(reader.local_write_i - reader.local_read_i);
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}
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int writer_ready() {
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return static_cast<int>(writer.local_read_i + queue_buf_size - writer.local_write_i);
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}
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qvalue_t get_unsafe() {
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return q[reader.local_read_i++ & (queue_buf_size - 1)].val;
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}
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void flush_reader() {
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reader.i.store(reader.local_read_i, std::memory_order_release);
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}
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int update_reader() {
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reader.local_write_i = writer.i.load(std::memory_order_acquire);
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return reader_ready();
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}
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void put_unsafe(qvalue_t val) {
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q[writer.local_write_i++ & (queue_buf_size - 1)].val = val;
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}
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void flush_writer() {
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writer.i.store(writer.local_write_i, std::memory_order_release);
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}
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int update_writer() {
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writer.local_read_i = reader.i.load(std::memory_order_acquire);
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return writer_ready();
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}
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int wait_reader() {
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Backoff backoff;
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int res = 0;
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while (res == 0) {
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backoff.next();
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res = update_reader();
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}
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return res;
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}
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qvalue_t get_noflush() {
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if (!reader_empty()) {
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return get_unsafe();
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}
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Backoff backoff;
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while (true) {
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backoff.next();
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if (update_reader()) {
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return get_unsafe();
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}
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}
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}
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qvalue_t get() {
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qvalue_t res = get_noflush();
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flush_reader();
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return res;
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}
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void put_noflush(qvalue_t val) {
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if (!writer_empty()) {
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put_unsafe(val);
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return;
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}
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if (!update_writer()) {
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std::fprintf(stderr, "put strong failed\n");
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std::exit(0);
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}
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put_unsafe(val);
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}
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void put(qvalue_t val) {
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put_noflush(val);
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flush_writer();
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}
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void destroy() {
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}
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};
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#if TD_LINUX
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class BufferedFdQueue {
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int fd;
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atomic<int> wait_flag;
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BufferQueue q;
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char pad[64];
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public:
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void init() {
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q.init();
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fd = eventfd(0, 0);
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(void)pad[0];
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}
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void put(qvalue_t value) {
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q.put(value);
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td::int64 x = 1;
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__sync_synchronize();
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if (wait_flag.load(MODE)) {
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write(fd, &x, sizeof(x));
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}
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}
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void put_noflush(qvalue_t value) {
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q.put_noflush(value);
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}
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void flush_writer() {
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q.flush_writer();
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td::int64 x = 1;
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__sync_synchronize();
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if (wait_flag.load(MODE)) {
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write(fd, &x, sizeof(x));
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}
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}
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void flush_reader() {
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q.flush_reader();
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}
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qvalue_t get_unsafe_flush() {
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qvalue_t res = q.get_unsafe();
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q.flush_reader();
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return res;
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}
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qvalue_t get_unsafe() {
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return q.get_unsafe();
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}
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int wait_reader() {
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int res = 0;
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Backoff backoff;
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while (res == 0 && backoff.next()) {
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res = q.update_reader();
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}
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if (res != 0) {
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return res;
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}
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td::int64 x;
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wait_flag.store(1, MODE);
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__sync_synchronize();
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while (!(res = q.update_reader())) {
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read(fd, &x, sizeof(x));
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__sync_synchronize();
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}
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wait_flag.store(0, MODE);
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return res;
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}
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qvalue_t get() {
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if (!q.reader_empty()) {
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return get_unsafe_flush();
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}
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Backoff backoff;
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while (backoff.next()) {
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if (q.update_reader()) {
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return get_unsafe_flush();
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}
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}
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td::int64 x;
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wait_flag.store(1, MODE);
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__sync_synchronize();
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while (!q.update_reader()) {
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read(fd, &x, sizeof(x));
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__sync_synchronize();
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}
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wait_flag.store(0, MODE);
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return get_unsafe_flush();
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}
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void destroy() {
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q.destroy();
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close(fd);
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}
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};
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class FdQueue {
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int fd;
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atomic<int> wait_flag;
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VarQueue q;
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char pad[64];
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public:
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void init() {
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q.init();
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fd = eventfd(0, 0);
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(void)pad[0];
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}
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void put(qvalue_t value) {
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q.put(value);
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td::int64 x = 1;
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__sync_synchronize();
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if (wait_flag.load(MODE)) {
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write(fd, &x, sizeof(x));
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}
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}
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qvalue_t get() {
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// td::int64 x;
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// read(fd, &x, sizeof(x));
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// return q.get();
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Backoff backoff;
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qvalue_t res = -1;
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do {
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res = q.try_get();
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} while (res == -1 && backoff.next());
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if (res != -1) {
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q.acquire();
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return res;
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}
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td::int64 x;
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wait_flag.store(1, MODE);
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__sync_synchronize();
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// std::fprintf(stderr, "!\n");
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// while (res == -1 && read(fd, &x, sizeof(x))) {
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// res = q.try_get();
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//}
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do {
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__sync_synchronize();
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res = q.try_get();
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} while (res == -1 && read(fd, &x, sizeof(x)));
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q.acquire();
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wait_flag.store(0, MODE);
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return res;
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}
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void destroy() {
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q.destroy();
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close(fd);
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}
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};
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#endif
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class SemBackoffQueue {
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sem_t sem;
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VarQueue q;
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public:
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void init() {
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q.init();
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sem_init(&sem, 0, 0);
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}
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void put(qvalue_t value) {
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q.put(value);
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sem_post(&sem);
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}
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qvalue_t get() {
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Backoff backoff;
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int sem_flag = -1;
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do {
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sem_flag = sem_trywait(&sem);
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} while (sem_flag != 0 && backoff.next());
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if (sem_flag != 0) {
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sem_wait(&sem);
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}
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return q.get();
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}
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void destroy() {
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q.destroy();
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sem_destroy(&sem);
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}
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};
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class SemCheatQueue {
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sem_t sem;
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VarQueue q;
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public:
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void init() {
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q.init();
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sem_init(&sem, 0, 0);
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}
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void put(qvalue_t value) {
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q.put(value);
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sem_post(&sem);
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}
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qvalue_t get() {
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Backoff backoff;
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qvalue_t res = -1;
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do {
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res = q.try_get();
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} while (res == -1 && backoff.next());
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sem_wait(&sem);
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if (res != -1) {
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q.acquire();
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return res;
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}
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return q.get();
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}
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void destroy() {
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q.destroy();
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sem_destroy(&sem);
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}
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};
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template <class QueueT>
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class QueueBenchmark2 : public td::Benchmark {
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QueueT client, server;
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int connections_n, queries_n;
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int server_active_connections;
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int client_active_connections;
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vector<td::int64> server_conn;
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vector<td::int64> client_conn;
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public:
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explicit QueueBenchmark2(int connections_n = 1) : connections_n(connections_n) {
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}
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std::string get_description() const override {
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return "QueueBenchmark2";
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}
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void start_up() override {
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client.init();
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server.init();
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}
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void tear_down() override {
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client.destroy();
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server.destroy();
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}
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void server_process(qvalue_t value) {
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int no = value & 0x00FFFFFF;
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int co = static_cast<int>(static_cast<unsigned int>(value) >> 24);
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// std::fprintf(stderr, "-->%d %d\n", co, no);
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if (co < 0 || co >= connections_n || no != server_conn[co]++) {
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std::fprintf(stderr, "%d %d\n", co, no);
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std::fprintf(stderr, "expected %d %lld\n", co, static_cast<long long>(server_conn[co] - 1));
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std::fprintf(stderr, "Server BUG\n");
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while (true) {
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}
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}
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// std::fprintf(stderr, "no = %d/%d\n", no, queries_n);
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// std::fprintf(stderr, "answer: %d %d\n", no, co);
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client.writer_put(value);
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client.writer_flush();
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if (no + 1 >= queries_n) {
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server_active_connections--;
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}
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}
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void *server_run(void *) {
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server_conn = vector<td::int64>(connections_n);
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server_active_connections = connections_n;
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while (server_active_connections > 0) {
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int cnt = server.reader_wait();
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if (cnt == 0) {
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std::fprintf(stderr, "ERROR!\n");
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std::exit(0);
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}
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while (cnt-- > 0) {
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server_process(server.reader_get_unsafe());
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server.reader_flush();
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}
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// client.writer_flush();
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server.reader_flush();
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}
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return nullptr;
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}
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|
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void client_process(qvalue_t value) {
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|
int no = value & 0x00FFFFFF;
|
|
int co = static_cast<int>(static_cast<unsigned int>(value) >> 24);
|
|
// std::fprintf(stderr, "<--%d %d\n", co, no);
|
|
if (co < 0 || co >= connections_n || no != client_conn[co]++) {
|
|
std::fprintf(stderr, "%d %d\n", co, no);
|
|
std::fprintf(stderr, "expected %d %lld\n", co, static_cast<long long>(client_conn[co] - 1));
|
|
std::fprintf(stderr, "BUG\n");
|
|
while (true) {
|
|
}
|
|
std::exit(0);
|
|
}
|
|
if (no + 1 < queries_n) {
|
|
// std::fprintf(stderr, "query: %d %d\n", no + 1, co);
|
|
server.writer_put(value + 1);
|
|
server.writer_flush();
|
|
} else {
|
|
client_active_connections--;
|
|
}
|
|
}
|
|
|
|
void *client_run(void *) {
|
|
client_conn = vector<td::int64>(connections_n);
|
|
client_active_connections = connections_n;
|
|
if (queries_n >= (1 << 24)) {
|
|
std::fprintf(stderr, "Too big queries_n\n");
|
|
std::exit(0);
|
|
}
|
|
|
|
for (int i = 0; i < connections_n; i++) {
|
|
server.writer_put(static_cast<qvalue_t>(i) << 24);
|
|
}
|
|
server.writer_flush();
|
|
|
|
while (client_active_connections > 0) {
|
|
int cnt = client.reader_wait();
|
|
if (cnt == 0) {
|
|
std::fprintf(stderr, "ERROR!\n");
|
|
std::exit(0);
|
|
}
|
|
while (cnt-- > 0) {
|
|
client_process(client.reader_get_unsafe());
|
|
client.reader_flush();
|
|
}
|
|
// server.writer_flush();
|
|
client.reader_flush();
|
|
}
|
|
// system("cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
|
|
return nullptr;
|
|
}
|
|
|
|
static void *client_run_gateway(void *arg) {
|
|
return static_cast<QueueBenchmark2 *>(arg)->client_run(nullptr);
|
|
}
|
|
|
|
static void *server_run_gateway(void *arg) {
|
|
return static_cast<QueueBenchmark2 *>(arg)->server_run(nullptr);
|
|
}
|
|
|
|
void run(int n) override {
|
|
pthread_t client_thread_id;
|
|
pthread_t server_thread_id;
|
|
|
|
queries_n = (n + connections_n - 1) / connections_n;
|
|
|
|
pthread_create(&client_thread_id, nullptr, client_run_gateway, this);
|
|
pthread_create(&server_thread_id, nullptr, server_run_gateway, this);
|
|
|
|
pthread_join(client_thread_id, nullptr);
|
|
pthread_join(server_thread_id, nullptr);
|
|
}
|
|
};
|
|
|
|
template <class QueueT>
|
|
class QueueBenchmark : public td::Benchmark {
|
|
QueueT client, server;
|
|
const int connections_n;
|
|
int queries_n;
|
|
|
|
public:
|
|
explicit QueueBenchmark(int connections_n = 1) : connections_n(connections_n) {
|
|
}
|
|
|
|
std::string get_description() const override {
|
|
return "QueueBenchmark";
|
|
}
|
|
|
|
void start_up() override {
|
|
client.init();
|
|
server.init();
|
|
}
|
|
|
|
void tear_down() override {
|
|
client.destroy();
|
|
server.destroy();
|
|
}
|
|
|
|
void *server_run(void *) {
|
|
vector<td::int64> conn(connections_n);
|
|
int active_connections = connections_n;
|
|
while (active_connections > 0) {
|
|
qvalue_t value = server.get();
|
|
int no = value & 0x00FFFFFF;
|
|
int co = static_cast<int>(value >> 24);
|
|
// std::fprintf(stderr, "-->%d %d\n", co, no);
|
|
if (co < 0 || co >= connections_n || no != conn[co]++) {
|
|
std::fprintf(stderr, "%d %d\n", co, no);
|
|
std::fprintf(stderr, "expected %d %lld\n", co, static_cast<long long>(conn[co] - 1));
|
|
std::fprintf(stderr, "Server BUG\n");
|
|
while (true) {
|
|
}
|
|
}
|
|
// std::fprintf(stderr, "no = %d/%d\n", no, queries_n);
|
|
client.put(value);
|
|
if (no + 1 >= queries_n) {
|
|
active_connections--;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void *client_run(void *) {
|
|
vector<td::int64> conn(connections_n);
|
|
if (queries_n >= (1 << 24)) {
|
|
std::fprintf(stderr, "Too big queries_n\n");
|
|
std::exit(0);
|
|
}
|
|
for (int i = 0; i < connections_n; i++) {
|
|
server.put(static_cast<qvalue_t>(i) << 24);
|
|
}
|
|
int active_connections = connections_n;
|
|
while (active_connections > 0) {
|
|
qvalue_t value = client.get();
|
|
int no = value & 0x00FFFFFF;
|
|
int co = static_cast<int>(value >> 24);
|
|
// std::fprintf(stderr, "<--%d %d\n", co, no);
|
|
if (co < 0 || co >= connections_n || no != conn[co]++) {
|
|
std::fprintf(stderr, "%d %d\n", co, no);
|
|
std::fprintf(stderr, "expected %d %lld\n", co, static_cast<long long>(conn[co] - 1));
|
|
std::fprintf(stderr, "BUG\n");
|
|
while (true) {
|
|
}
|
|
std::exit(0);
|
|
}
|
|
if (no + 1 < queries_n) {
|
|
server.put(value + 1);
|
|
} else {
|
|
active_connections--;
|
|
}
|
|
}
|
|
// system("cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
|
|
return nullptr;
|
|
}
|
|
|
|
void *client_run2(void *) {
|
|
vector<td::int64> conn(connections_n);
|
|
if (queries_n >= (1 << 24)) {
|
|
std::fprintf(stderr, "Too big queries_n\n");
|
|
std::exit(0);
|
|
}
|
|
for (int query = 0; query < queries_n; query++) {
|
|
for (int i = 0; i < connections_n; i++) {
|
|
server.put((static_cast<td::int64>(i) << 24) + query);
|
|
}
|
|
for (int i = 0; i < connections_n; i++) {
|
|
qvalue_t value = client.get();
|
|
int no = value & 0x00FFFFFF;
|
|
int co = static_cast<int>(value >> 24);
|
|
// std::fprintf(stderr, "<--%d %d\n", co, no);
|
|
if (co < 0 || co >= connections_n || no != conn[co]++) {
|
|
std::fprintf(stderr, "%d %d\n", co, no);
|
|
std::fprintf(stderr, "expected %d %lld\n", co, static_cast<long long>(conn[co] - 1));
|
|
std::fprintf(stderr, "BUG\n");
|
|
while (true) {
|
|
}
|
|
std::exit(0);
|
|
}
|
|
}
|
|
}
|
|
// system("cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
|
|
return nullptr;
|
|
}
|
|
|
|
static void *client_run_gateway(void *arg) {
|
|
return static_cast<QueueBenchmark *>(arg)->client_run(nullptr);
|
|
}
|
|
|
|
static void *server_run_gateway(void *arg) {
|
|
return static_cast<QueueBenchmark *>(arg)->server_run(nullptr);
|
|
}
|
|
|
|
void run(int n) override {
|
|
pthread_t client_thread_id;
|
|
pthread_t server_thread_id;
|
|
|
|
queries_n = (n + connections_n - 1) / connections_n;
|
|
|
|
pthread_create(&client_thread_id, nullptr, client_run_gateway, this);
|
|
pthread_create(&server_thread_id, nullptr, server_run_gateway, this);
|
|
|
|
pthread_join(client_thread_id, nullptr);
|
|
pthread_join(server_thread_id, nullptr);
|
|
}
|
|
};
|
|
|
|
template <class QueueT>
|
|
class RingBenchmark : public td::Benchmark {
|
|
enum { QN = 504 };
|
|
|
|
struct Thread {
|
|
int int_id;
|
|
pthread_t id;
|
|
QueueT queue;
|
|
Thread *next;
|
|
char pad[64];
|
|
|
|
void *run() {
|
|
qvalue_t value;
|
|
// std::fprintf(stderr, "start %d\n", int_id);
|
|
do {
|
|
int cnt = queue.reader_wait();
|
|
CHECK(cnt == 1);
|
|
value = queue.reader_get_unsafe();
|
|
queue.reader_flush();
|
|
|
|
next->queue.writer_put(value - 1);
|
|
next->queue.writer_flush();
|
|
} while (value >= QN);
|
|
return nullptr;
|
|
}
|
|
};
|
|
|
|
Thread q[QN];
|
|
|
|
public:
|
|
static void *run_gateway(void *arg) {
|
|
return static_cast<Thread *>(arg)->run();
|
|
}
|
|
|
|
void start_up() override {
|
|
for (int i = 0; i < QN; i++) {
|
|
q[i].int_id = i;
|
|
q[i].queue.init();
|
|
q[i].next = &q[(i + 1) % QN];
|
|
}
|
|
}
|
|
|
|
void tear_down() override {
|
|
for (int i = 0; i < QN; i++) {
|
|
q[i].queue.destroy();
|
|
}
|
|
}
|
|
|
|
void run(int n) override {
|
|
for (int i = 0; i < QN; i++) {
|
|
pthread_create(&q[i].id, nullptr, run_gateway, &q[i]);
|
|
}
|
|
|
|
std::fprintf(stderr, "run %d\n", n);
|
|
if (n < 1000) {
|
|
n = 1000;
|
|
}
|
|
q[0].queue.writer_put(n);
|
|
q[0].queue.writer_flush();
|
|
|
|
for (int i = 0; i < QN; i++) {
|
|
pthread_join(q[i].id, nullptr);
|
|
}
|
|
}
|
|
};
|
|
|
|
int main() {
|
|
SET_VERBOSITY_LEVEL(VERBOSITY_NAME(DEBUG));
|
|
#define BENCH_Q2(Q, N) \
|
|
std::fprintf(stderr, "!%s %d:\t", #Q, N); \
|
|
td::bench(QueueBenchmark2<Q>(N));
|
|
#define BENCH_Q(Q, N) \
|
|
std::fprintf(stderr, "%s %d:\t", #Q, N); \
|
|
td::bench(QueueBenchmark<Q>(N));
|
|
|
|
#define BENCH_R(Q) \
|
|
std::fprintf(stderr, "%s:\t", #Q); \
|
|
td::bench(RingBenchmark<Q>());
|
|
// TODO: yield makes it extremely slow. Yet some backoff may be necessary.
|
|
// BENCH_R(SemQueue);
|
|
// BENCH_R(td::PollQueue<qvalue_t>);
|
|
|
|
BENCH_Q2(td::PollQueue<qvalue_t>, 1);
|
|
BENCH_Q2(td::MpscPollableQueue<qvalue_t>, 1);
|
|
BENCH_Q2(td::PollQueue<qvalue_t>, 100);
|
|
BENCH_Q2(td::MpscPollableQueue<qvalue_t>, 100);
|
|
BENCH_Q2(td::PollQueue<qvalue_t>, 10);
|
|
BENCH_Q2(td::MpscPollableQueue<qvalue_t>, 10);
|
|
|
|
BENCH_Q(VarQueue, 1);
|
|
// BENCH_Q(FdQueue, 1);
|
|
// BENCH_Q(BufferedFdQueue, 1);
|
|
BENCH_Q(PipeQueue, 1);
|
|
BENCH_Q(SemCheatQueue, 1);
|
|
BENCH_Q(SemQueue, 1);
|
|
|
|
// BENCH_Q2(td::PollQueue<qvalue_t>, 100);
|
|
// BENCH_Q2(td::PollQueue<qvalue_t>, 10);
|
|
// BENCH_Q2(td::PollQueue<qvalue_t>, 4);
|
|
// BENCH_Q2(td::InfBackoffQueue<qvalue_t>, 100);
|
|
|
|
// BENCH_Q2(td::InfBackoffQueue<qvalue_t>, 1);
|
|
// BENCH_Q(SemCheatQueue, 1);
|
|
|
|
// BENCH_Q(BufferedFdQueue, 100);
|
|
// BENCH_Q(BufferedFdQueue, 10);
|
|
|
|
// BENCH_Q(BufferQueue, 4);
|
|
// BENCH_Q(BufferQueue, 100);
|
|
// BENCH_Q(BufferQueue, 10);
|
|
// BENCH_Q(BufferQueue, 1);
|
|
|
|
return 0;
|
|
}
|