109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
/*
|
|
* BenchNet2.cpp
|
|
*
|
|
* C++20 coroutine versions of the ACTOR benchmarks in BenchNet2.actor.cpp.
|
|
* Used to compare coroutine vs ACTOR performance for delay, yield, and net2 patterns.
|
|
*
|
|
* This source file is part of the FoundationDB open source project
|
|
*
|
|
* Copyright 2013-2026 Apple Inc. and the FoundationDB project authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "benchmark/benchmark.h"
|
|
|
|
#include "flow/IRandom.h"
|
|
#include "flow/flow.h"
|
|
#include "flow/DeterministicRandom.h"
|
|
#include "flow/network.h"
|
|
#include "flow/ThreadHelper.h"
|
|
|
|
static Future<Void> increment(TaskPriority priority, uint32_t* sum) {
|
|
co_await delay(0, priority);
|
|
++(*sum);
|
|
}
|
|
|
|
static inline TaskPriority getRandomTaskPriority(DeterministicRandom& rand) {
|
|
return static_cast<TaskPriority>(rand.randomInt(0, 100));
|
|
}
|
|
|
|
static Future<Void> benchNet2Actor(benchmark::State* benchState) {
|
|
size_t actorCount = benchState->range(0);
|
|
uint32_t sum;
|
|
uint64_t seed = platform::getRandomSeed();
|
|
while (benchState->KeepRunning()) {
|
|
sum = 0;
|
|
std::vector<Future<Void>> futures;
|
|
futures.reserve(actorCount);
|
|
DeterministicRandom rand(seed);
|
|
for (int i = 0; i < actorCount; ++i) {
|
|
futures.push_back(increment(getRandomTaskPriority(rand), &sum));
|
|
}
|
|
co_await waitForAll(futures);
|
|
benchmark::DoNotOptimize(sum);
|
|
}
|
|
benchState->SetItemsProcessed(actorCount * static_cast<long>(benchState->iterations()));
|
|
}
|
|
|
|
static void coroutine_net2(benchmark::State& benchState) {
|
|
onMainThread([&benchState] { return benchNet2Actor(&benchState); }).blockUntilReady();
|
|
}
|
|
|
|
BENCHMARK(coroutine_net2)->Range(1, 1 << 16)->ReportAggregatesOnly(true);
|
|
|
|
// Populate the run loop priority queue with random timers, then benchmark
|
|
// delay(0) or yield() in a tight loop.
|
|
// Separate functions instead of a template to work around a GCC coroutine bug
|
|
// where co_await inside a function template triggers a spurious double
|
|
// await_transform call.
|
|
|
|
static Future<Void> benchDelayLoop(benchmark::State* benchState) {
|
|
int64_t timerCount = benchState->range(0);
|
|
std::vector<Future<Void>> futures;
|
|
DeterministicRandom rand(platform::getRandomSeed());
|
|
while (--timerCount > 0) {
|
|
futures.push_back(delay(1.0 + rand.random01(), getRandomTaskPriority(rand)));
|
|
}
|
|
|
|
while (benchState->KeepRunning()) {
|
|
co_await delay(0);
|
|
}
|
|
benchState->SetItemsProcessed(static_cast<long>(benchState->iterations()));
|
|
}
|
|
|
|
static Future<Void> benchYieldLoop(benchmark::State* benchState) {
|
|
int64_t timerCount = benchState->range(0);
|
|
std::vector<Future<Void>> futures;
|
|
DeterministicRandom rand(platform::getRandomSeed());
|
|
while (--timerCount > 0) {
|
|
futures.push_back(delay(1.0 + rand.random01(), getRandomTaskPriority(rand)));
|
|
}
|
|
|
|
while (benchState->KeepRunning()) {
|
|
co_await yield();
|
|
}
|
|
benchState->SetItemsProcessed(static_cast<long>(benchState->iterations()));
|
|
}
|
|
|
|
static void coroutine_delay_bench(benchmark::State& benchState) {
|
|
onMainThread([&benchState] { return benchDelayLoop(&benchState); }).blockUntilReady();
|
|
}
|
|
|
|
static void coroutine_yield_bench(benchmark::State& benchState) {
|
|
onMainThread([&benchState] { return benchYieldLoop(&benchState); }).blockUntilReady();
|
|
}
|
|
|
|
BENCHMARK(coroutine_delay_bench)->Range(0, 1 << 16)->ReportAggregatesOnly(true);
|
|
BENCHMARK(coroutine_yield_bench)->Range(0, 1 << 16)->ReportAggregatesOnly(true);
|