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//
//
// Copyright 2017 gRPC 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.
//
//
// Test various closure related operations
#include <sstream>
#include <benchmark/benchmark.h>
#include <grpc/grpc.h>
#include "src/core/lib/gpr/spinlock.h"
#include "src/core/lib/iomgr/closure.h"
#include "src/core/lib/iomgr/combiner.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "test/core/test_util/test_config.h"
#include "test/cpp/microbenchmarks/helpers.h"
#include "test/cpp/util/test_config.h"
static void BM_NoOpExecCtx(benchmark::State& state) {
for (auto _ : state) {
grpc_core::ExecCtx exec_ctx;
}
}
BENCHMARK(BM_NoOpExecCtx);
static void BM_WellFlushed(benchmark::State& state) {
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
grpc_core::ExecCtx::Get()->Flush();
}
}
BENCHMARK(BM_WellFlushed);
static void DoNothing(void* /*arg*/, grpc_error_handle /*error*/) {}
static void BM_ClosureInitAgainstExecCtx(benchmark::State& state) {
grpc_closure c;
for (auto _ : state) {
benchmark::DoNotOptimize(
GRPC_CLOSURE_INIT(&c, DoNothing, nullptr, grpc_schedule_on_exec_ctx));
}
}
BENCHMARK(BM_ClosureInitAgainstExecCtx);
static void BM_ClosureInitAgainstCombiner(benchmark::State& state) {
grpc_core::Combiner* combiner = grpc_combiner_create(
grpc_event_engine::experimental::CreateEventEngine());
grpc_closure c;
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
benchmark::DoNotOptimize(
GRPC_CLOSURE_INIT(&c, DoNothing, nullptr, nullptr));
}
GRPC_COMBINER_UNREF(combiner, "finished");
}
BENCHMARK(BM_ClosureInitAgainstCombiner);
static void BM_ClosureRun(benchmark::State& state) {
grpc_closure c;
GRPC_CLOSURE_INIT(&c, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
grpc_core::Closure::Run(DEBUG_LOCATION, &c, absl::OkStatus());
}
}
BENCHMARK(BM_ClosureRun);
static void BM_ClosureCreateAndRun(benchmark::State& state) {
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
grpc_core::Closure::Run(
DEBUG_LOCATION,
GRPC_CLOSURE_CREATE(DoNothing, nullptr, grpc_schedule_on_exec_ctx),
absl::OkStatus());
}
}
BENCHMARK(BM_ClosureCreateAndRun);
static void BM_ClosureInitAndRun(benchmark::State& state) {
grpc_core::ExecCtx exec_ctx;
grpc_closure c;
for (auto _ : state) {
grpc_core::Closure::Run(
DEBUG_LOCATION,
GRPC_CLOSURE_INIT(&c, DoNothing, nullptr, grpc_schedule_on_exec_ctx),
absl::OkStatus());
}
}
BENCHMARK(BM_ClosureInitAndRun);
static void BM_ClosureSchedOnExecCtx(benchmark::State& state) {
grpc_closure c;
GRPC_CLOSURE_INIT(&c, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &c, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
}
BENCHMARK(BM_ClosureSchedOnExecCtx);
static void BM_ClosureSched2OnExecCtx(benchmark::State& state) {
grpc_closure c1;
grpc_closure c2;
GRPC_CLOSURE_INIT(&c1, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&c2, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &c1, absl::OkStatus());
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &c2, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
}
BENCHMARK(BM_ClosureSched2OnExecCtx);
static void BM_ClosureSched3OnExecCtx(benchmark::State& state) {
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
GRPC_CLOSURE_INIT(&c1, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&c2, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&c3, DoNothing, nullptr, grpc_schedule_on_exec_ctx);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &c1, absl::OkStatus());
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &c2, absl::OkStatus());
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &c3, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
}
BENCHMARK(BM_ClosureSched3OnExecCtx);
static void BM_AcquireMutex(benchmark::State& state) {
// for comparison with the combiner stuff below
gpr_mu mu;
gpr_mu_init(&mu);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
gpr_mu_lock(&mu);
DoNothing(nullptr, absl::OkStatus());
gpr_mu_unlock(&mu);
}
gpr_mu_destroy(&mu);
}
BENCHMARK(BM_AcquireMutex);
static void BM_TryAcquireMutex(benchmark::State& state) {
// for comparison with the combiner stuff below
gpr_mu mu;
gpr_mu_init(&mu);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
if (gpr_mu_trylock(&mu)) {
DoNothing(nullptr, absl::OkStatus());
gpr_mu_unlock(&mu);
} else {
abort();
}
}
gpr_mu_destroy(&mu);
}
BENCHMARK(BM_TryAcquireMutex);
static void BM_AcquireSpinlock(benchmark::State& state) {
// for comparison with the combiner stuff below
gpr_spinlock mu = GPR_SPINLOCK_INITIALIZER;
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
gpr_spinlock_lock(&mu);
DoNothing(nullptr, absl::OkStatus());
gpr_spinlock_unlock(&mu);
}
}
BENCHMARK(BM_AcquireSpinlock);
static void BM_TryAcquireSpinlock(benchmark::State& state) {
// for comparison with the combiner stuff below
gpr_spinlock mu = GPR_SPINLOCK_INITIALIZER;
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
if (gpr_spinlock_trylock(&mu)) {
DoNothing(nullptr, absl::OkStatus());
gpr_spinlock_unlock(&mu);
} else {
abort();
}
}
}
BENCHMARK(BM_TryAcquireSpinlock);
static void BM_ClosureSchedOnCombiner(benchmark::State& state) {
grpc_core::Combiner* combiner = grpc_combiner_create(
grpc_event_engine::experimental::CreateEventEngine());
grpc_closure c;
GRPC_CLOSURE_INIT(&c, DoNothing, nullptr, nullptr);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
combiner->Run(&c, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
GRPC_COMBINER_UNREF(combiner, "finished");
}
BENCHMARK(BM_ClosureSchedOnCombiner);
static void BM_ClosureSched2OnCombiner(benchmark::State& state) {
grpc_core::Combiner* combiner = grpc_combiner_create(
grpc_event_engine::experimental::CreateEventEngine());
grpc_closure c1;
grpc_closure c2;
GRPC_CLOSURE_INIT(&c1, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c2, DoNothing, nullptr, nullptr);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
combiner->Run(&c1, absl::OkStatus());
combiner->Run(&c2, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
GRPC_COMBINER_UNREF(combiner, "finished");
}
BENCHMARK(BM_ClosureSched2OnCombiner);
static void BM_ClosureSched3OnCombiner(benchmark::State& state) {
grpc_core::Combiner* combiner = grpc_combiner_create(
grpc_event_engine::experimental::CreateEventEngine());
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
GRPC_CLOSURE_INIT(&c1, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c2, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c3, DoNothing, nullptr, nullptr);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
combiner->Run(&c1, absl::OkStatus());
combiner->Run(&c2, absl::OkStatus());
combiner->Run(&c3, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
GRPC_COMBINER_UNREF(combiner, "finished");
}
BENCHMARK(BM_ClosureSched3OnCombiner);
static void BM_ClosureSched2OnTwoCombiners(benchmark::State& state) {
std::shared_ptr<grpc_event_engine::experimental::EventEngine> engine =
grpc_event_engine::experimental::CreateEventEngine();
grpc_core::Combiner* combiner1 = grpc_combiner_create(engine);
grpc_core::Combiner* combiner2 = grpc_combiner_create(engine);
grpc_closure c1;
grpc_closure c2;
GRPC_CLOSURE_INIT(&c1, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c2, DoNothing, nullptr, nullptr);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
combiner1->Run(&c1, absl::OkStatus());
combiner2->Run(&c2, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
GRPC_COMBINER_UNREF(combiner1, "finished");
GRPC_COMBINER_UNREF(combiner2, "finished");
}
BENCHMARK(BM_ClosureSched2OnTwoCombiners);
static void BM_ClosureSched4OnTwoCombiners(benchmark::State& state) {
std::shared_ptr<grpc_event_engine::experimental::EventEngine> engine =
grpc_event_engine::experimental::CreateEventEngine();
grpc_core::Combiner* combiner1 = grpc_combiner_create(engine);
grpc_core::Combiner* combiner2 = grpc_combiner_create(engine);
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
grpc_closure c4;
GRPC_CLOSURE_INIT(&c1, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c2, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c3, DoNothing, nullptr, nullptr);
GRPC_CLOSURE_INIT(&c4, DoNothing, nullptr, nullptr);
grpc_core::ExecCtx exec_ctx;
for (auto _ : state) {
combiner1->Run(&c1, absl::OkStatus());
combiner2->Run(&c2, absl::OkStatus());
combiner1->Run(&c3, absl::OkStatus());
combiner2->Run(&c4, absl::OkStatus());
grpc_core::ExecCtx::Get()->Flush();
}
GRPC_COMBINER_UNREF(combiner1, "finished");
GRPC_COMBINER_UNREF(combiner2, "finished");
}
BENCHMARK(BM_ClosureSched4OnTwoCombiners);
// Helper that continuously reschedules the same closure against something until
// the benchmark is complete
class Rescheduler {
public:
explicit Rescheduler(benchmark::State& state) : state_(state) {
GRPC_CLOSURE_INIT(&closure_, Step, this, nullptr);
}
void ScheduleFirst() {
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &closure_, absl::OkStatus());
}
void ScheduleFirstAgainstDifferentScheduler() {
grpc_core::ExecCtx::Run(DEBUG_LOCATION,
GRPC_CLOSURE_CREATE(Step, this, nullptr),
absl::OkStatus());
}
private:
benchmark::State& state_;
grpc_closure closure_;
static void Step(void* arg, grpc_error_handle /*error*/) {
Rescheduler* self = static_cast<Rescheduler*>(arg);
if (self->state_.KeepRunning()) {
grpc_core::ExecCtx::Run(DEBUG_LOCATION, &self->closure_,
absl::OkStatus());
}
}
};
static void BM_ClosureReschedOnExecCtx(benchmark::State& state) {
grpc_core::ExecCtx exec_ctx;
Rescheduler r(state);
r.ScheduleFirst();
grpc_core::ExecCtx::Get()->Flush();
}
BENCHMARK(BM_ClosureReschedOnExecCtx);
// Some distros have RunSpecifiedBenchmarks under the benchmark namespace,
// and others do not. This allows us to support both modes.
namespace benchmark {
void RunTheBenchmarksNamespaced() { RunSpecifiedBenchmarks(); }
} // namespace benchmark
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
LibraryInitializer libInit;
::benchmark::Initialize(&argc, argv);
grpc::testing::InitTest(&argc, &argv, false);
benchmark::RunTheBenchmarksNamespaced();
return 0;
}