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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 <benchmark/benchmark.h>
#include <grpc/grpc.h>
#include <sstream>
extern "C" {
#include "src/core/lib/iomgr/closure.h"
#include "src/core/lib/iomgr/combiner.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/support/spinlock.h"
}
#include "test/cpp/microbenchmarks/helpers.h"
auto& force_library_initialization = Library::get();
static void BM_NoOpExecCtx(benchmark::State& state) {
TrackCounters track_counters;
while (state.KeepRunning()) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_exec_ctx_finish(&exec_ctx);
}
track_counters.Finish(state);
}
BENCHMARK(BM_NoOpExecCtx);
static void BM_WellFlushed(benchmark::State& state) {
TrackCounters track_counters;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
grpc_exec_ctx_flush(&exec_ctx);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_WellFlushed);
static void DoNothing(grpc_exec_ctx* exec_ctx, void* arg, grpc_error* error) {}
static void BM_ClosureInitAgainstExecCtx(benchmark::State& state) {
TrackCounters track_counters;
grpc_closure c;
while (state.KeepRunning()) {
benchmark::DoNotOptimize(
GRPC_CLOSURE_INIT(&c, DoNothing, NULL, grpc_schedule_on_exec_ctx));
}
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureInitAgainstExecCtx);
static void BM_ClosureInitAgainstCombiner(benchmark::State& state) {
TrackCounters track_counters;
grpc_combiner* combiner = grpc_combiner_create();
grpc_closure c;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
benchmark::DoNotOptimize(GRPC_CLOSURE_INIT(
&c, DoNothing, NULL, grpc_combiner_scheduler(combiner)));
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureInitAgainstCombiner);
static void BM_ClosureRunOnExecCtx(benchmark::State& state) {
TrackCounters track_counters;
grpc_closure c;
GRPC_CLOSURE_INIT(&c, DoNothing, NULL, grpc_schedule_on_exec_ctx);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_RUN(&exec_ctx, &c, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureRunOnExecCtx);
static void BM_ClosureCreateAndRun(benchmark::State& state) {
TrackCounters track_counters;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_RUN(&exec_ctx, GRPC_CLOSURE_CREATE(DoNothing, NULL,
grpc_schedule_on_exec_ctx),
GRPC_ERROR_NONE);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureCreateAndRun);
static void BM_ClosureInitAndRun(benchmark::State& state) {
TrackCounters track_counters;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_closure c;
while (state.KeepRunning()) {
GRPC_CLOSURE_RUN(&exec_ctx, GRPC_CLOSURE_INIT(&c, DoNothing, NULL,
grpc_schedule_on_exec_ctx),
GRPC_ERROR_NONE);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureInitAndRun);
static void BM_ClosureSchedOnExecCtx(benchmark::State& state) {
TrackCounters track_counters;
grpc_closure c;
GRPC_CLOSURE_INIT(&c, DoNothing, NULL, grpc_schedule_on_exec_ctx);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSchedOnExecCtx);
static void BM_ClosureSched2OnExecCtx(benchmark::State& state) {
TrackCounters track_counters;
grpc_closure c1;
grpc_closure c2;
GRPC_CLOSURE_INIT(&c1, DoNothing, NULL, grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&c2, DoNothing, NULL, grpc_schedule_on_exec_ctx);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c1, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c2, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSched2OnExecCtx);
static void BM_ClosureSched3OnExecCtx(benchmark::State& state) {
TrackCounters track_counters;
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
GRPC_CLOSURE_INIT(&c1, DoNothing, NULL, grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&c2, DoNothing, NULL, grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&c3, DoNothing, NULL, grpc_schedule_on_exec_ctx);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c1, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c2, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c3, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSched3OnExecCtx);
static void BM_AcquireMutex(benchmark::State& state) {
TrackCounters track_counters;
// for comparison with the combiner stuff below
gpr_mu mu;
gpr_mu_init(&mu);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
gpr_mu_lock(&mu);
DoNothing(&exec_ctx, NULL, GRPC_ERROR_NONE);
gpr_mu_unlock(&mu);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_AcquireMutex);
static void BM_TryAcquireMutex(benchmark::State& state) {
TrackCounters track_counters;
// for comparison with the combiner stuff below
gpr_mu mu;
gpr_mu_init(&mu);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
if (gpr_mu_trylock(&mu)) {
DoNothing(&exec_ctx, NULL, GRPC_ERROR_NONE);
gpr_mu_unlock(&mu);
} else {
abort();
}
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_TryAcquireMutex);
static void BM_AcquireSpinlock(benchmark::State& state) {
TrackCounters track_counters;
// for comparison with the combiner stuff below
gpr_spinlock mu = GPR_SPINLOCK_INITIALIZER;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
gpr_spinlock_lock(&mu);
DoNothing(&exec_ctx, NULL, GRPC_ERROR_NONE);
gpr_spinlock_unlock(&mu);
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_AcquireSpinlock);
static void BM_TryAcquireSpinlock(benchmark::State& state) {
TrackCounters track_counters;
// for comparison with the combiner stuff below
gpr_spinlock mu = GPR_SPINLOCK_INITIALIZER;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
if (gpr_spinlock_trylock(&mu)) {
DoNothing(&exec_ctx, NULL, GRPC_ERROR_NONE);
gpr_spinlock_unlock(&mu);
} else {
abort();
}
}
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_TryAcquireSpinlock);
static void BM_ClosureSchedOnCombiner(benchmark::State& state) {
TrackCounters track_counters;
grpc_combiner* combiner = grpc_combiner_create();
grpc_closure c;
GRPC_CLOSURE_INIT(&c, DoNothing, NULL, grpc_combiner_scheduler(combiner));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSchedOnCombiner);
static void BM_ClosureSched2OnCombiner(benchmark::State& state) {
TrackCounters track_counters;
grpc_combiner* combiner = grpc_combiner_create();
grpc_closure c1;
grpc_closure c2;
GRPC_CLOSURE_INIT(&c1, DoNothing, NULL, grpc_combiner_scheduler(combiner));
GRPC_CLOSURE_INIT(&c2, DoNothing, NULL, grpc_combiner_scheduler(combiner));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c1, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c2, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSched2OnCombiner);
static void BM_ClosureSched3OnCombiner(benchmark::State& state) {
TrackCounters track_counters;
grpc_combiner* combiner = grpc_combiner_create();
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
GRPC_CLOSURE_INIT(&c1, DoNothing, NULL, grpc_combiner_scheduler(combiner));
GRPC_CLOSURE_INIT(&c2, DoNothing, NULL, grpc_combiner_scheduler(combiner));
GRPC_CLOSURE_INIT(&c3, DoNothing, NULL, grpc_combiner_scheduler(combiner));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c1, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c2, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c3, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSched3OnCombiner);
static void BM_ClosureSched2OnTwoCombiners(benchmark::State& state) {
TrackCounters track_counters;
grpc_combiner* combiner1 = grpc_combiner_create();
grpc_combiner* combiner2 = grpc_combiner_create();
grpc_closure c1;
grpc_closure c2;
GRPC_CLOSURE_INIT(&c1, DoNothing, NULL, grpc_combiner_scheduler(combiner1));
GRPC_CLOSURE_INIT(&c2, DoNothing, NULL, grpc_combiner_scheduler(combiner2));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c1, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c2, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner1, "finished");
GRPC_COMBINER_UNREF(&exec_ctx, combiner2, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSched2OnTwoCombiners);
static void BM_ClosureSched4OnTwoCombiners(benchmark::State& state) {
TrackCounters track_counters;
grpc_combiner* combiner1 = grpc_combiner_create();
grpc_combiner* combiner2 = grpc_combiner_create();
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
grpc_closure c4;
GRPC_CLOSURE_INIT(&c1, DoNothing, NULL, grpc_combiner_scheduler(combiner1));
GRPC_CLOSURE_INIT(&c2, DoNothing, NULL, grpc_combiner_scheduler(combiner2));
GRPC_CLOSURE_INIT(&c3, DoNothing, NULL, grpc_combiner_scheduler(combiner1));
GRPC_CLOSURE_INIT(&c4, DoNothing, NULL, grpc_combiner_scheduler(combiner2));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
GRPC_CLOSURE_SCHED(&exec_ctx, &c1, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c2, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c3, GRPC_ERROR_NONE);
GRPC_CLOSURE_SCHED(&exec_ctx, &c4, GRPC_ERROR_NONE);
grpc_exec_ctx_flush(&exec_ctx);
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner1, "finished");
GRPC_COMBINER_UNREF(&exec_ctx, combiner2, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureSched4OnTwoCombiners);
// Helper that continuously reschedules the same closure against something until
// the benchmark is complete
class Rescheduler {
public:
Rescheduler(benchmark::State& state, grpc_closure_scheduler* scheduler)
: state_(state) {
GRPC_CLOSURE_INIT(&closure_, Step, this, scheduler);
}
void ScheduleFirst(grpc_exec_ctx* exec_ctx) {
GRPC_CLOSURE_SCHED(exec_ctx, &closure_, GRPC_ERROR_NONE);
}
void ScheduleFirstAgainstDifferentScheduler(
grpc_exec_ctx* exec_ctx, grpc_closure_scheduler* scheduler) {
GRPC_CLOSURE_SCHED(exec_ctx, GRPC_CLOSURE_CREATE(Step, this, scheduler),
GRPC_ERROR_NONE);
}
private:
benchmark::State& state_;
grpc_closure closure_;
static void Step(grpc_exec_ctx* exec_ctx, void* arg, grpc_error* error) {
Rescheduler* self = static_cast<Rescheduler*>(arg);
if (self->state_.KeepRunning()) {
GRPC_CLOSURE_SCHED(exec_ctx, &self->closure_, GRPC_ERROR_NONE);
}
}
};
static void BM_ClosureReschedOnExecCtx(benchmark::State& state) {
TrackCounters track_counters;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
Rescheduler r(state, grpc_schedule_on_exec_ctx);
r.ScheduleFirst(&exec_ctx);
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureReschedOnExecCtx);
static void BM_ClosureReschedOnCombiner(benchmark::State& state) {
TrackCounters track_counters;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_combiner* combiner = grpc_combiner_create();
Rescheduler r(state, grpc_combiner_scheduler(combiner));
r.ScheduleFirst(&exec_ctx);
grpc_exec_ctx_flush(&exec_ctx);
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureReschedOnCombiner);
static void BM_ClosureReschedOnCombinerFinally(benchmark::State& state) {
TrackCounters track_counters;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_combiner* combiner = grpc_combiner_create();
Rescheduler r(state, grpc_combiner_finally_scheduler(combiner));
r.ScheduleFirstAgainstDifferentScheduler(&exec_ctx,
grpc_combiner_scheduler(combiner));
grpc_exec_ctx_flush(&exec_ctx);
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
track_counters.Finish(state);
}
BENCHMARK(BM_ClosureReschedOnCombinerFinally);
BENCHMARK_MAIN();
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