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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/* Test various closure related operations */
#include <grpc/grpc.h>
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 "third_party/benchmark/include/benchmark/benchmark.h"
#include <sstream>
#ifdef GPR_LOW_LEVEL_COUNTERS
extern "C" gpr_atm gpr_mu_locks;
#endif
static class InitializeStuff {
public:
InitializeStuff() { grpc_init(); }
~InitializeStuff() { grpc_shutdown(); }
} initialize_stuff;
class TrackCounters {
public:
TrackCounters(benchmark::State& state) : state_(state) {}
~TrackCounters() {
std::ostringstream out;
#ifdef GPR_LOW_LEVEL_COUNTERS
out << " locks/iter:" << ((double)(gpr_atm_no_barrier_load(&gpr_mu_locks) -
mu_locks_at_start_) /
(double)state_.iterations())
<< " atm_cas/iter:"
<< ((double)(gpr_atm_no_barrier_load(&gpr_counter_atm_cas) -
atm_cas_at_start_) /
(double)state_.iterations())
<< " atm_add/iter:"
<< ((double)(gpr_atm_no_barrier_load(&gpr_counter_atm_add) -
atm_add_at_start_) /
(double)state_.iterations());
#endif
state_.SetLabel(out.str());
}
private:
benchmark::State& state_;
#ifdef GPR_LOW_LEVEL_COUNTERS
const size_t mu_locks_at_start_ = gpr_atm_no_barrier_load(&gpr_mu_locks);
const size_t atm_cas_at_start_ =
gpr_atm_no_barrier_load(&gpr_counter_atm_cas);
const size_t atm_add_at_start_ =
gpr_atm_no_barrier_load(&gpr_counter_atm_add);
#endif
};
static void BM_NoOpExecCtx(benchmark::State& state) {
TrackCounters track_counters(state);
while (state.KeepRunning()) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_exec_ctx_finish(&exec_ctx);
}
}
BENCHMARK(BM_NoOpExecCtx);
static void BM_WellFlushed(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
while (state.KeepRunning()) {
grpc_exec_ctx_flush(&exec_ctx);
}
grpc_exec_ctx_finish(&exec_ctx);
}
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(state);
grpc_closure c;
while (state.KeepRunning()) {
benchmark::DoNotOptimize(
grpc_closure_init(&c, DoNothing, NULL, grpc_schedule_on_exec_ctx));
}
}
BENCHMARK(BM_ClosureInitAgainstExecCtx);
static void BM_ClosureInitAgainstCombiner(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_combiner* combiner = grpc_combiner_create(NULL);
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, false)));
}
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
}
BENCHMARK(BM_ClosureInitAgainstCombiner);
static void BM_ClosureRunOnExecCtx(benchmark::State& state) {
TrackCounters track_counters(state);
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);
}
BENCHMARK(BM_ClosureRunOnExecCtx);
static void BM_ClosureCreateAndRun(benchmark::State& state) {
TrackCounters track_counters(state);
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);
}
BENCHMARK(BM_ClosureCreateAndRun);
static void BM_ClosureInitAndRun(benchmark::State& state) {
TrackCounters track_counters(state);
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);
}
BENCHMARK(BM_ClosureInitAndRun);
static void BM_ClosureSchedOnExecCtx(benchmark::State& state) {
TrackCounters track_counters(state);
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);
}
BENCHMARK(BM_ClosureSchedOnExecCtx);
static void BM_ClosureSched2OnExecCtx(benchmark::State& state) {
TrackCounters track_counters(state);
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);
}
BENCHMARK(BM_ClosureSched2OnExecCtx);
static void BM_ClosureSched3OnExecCtx(benchmark::State& state) {
TrackCounters track_counters(state);
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);
}
BENCHMARK(BM_ClosureSched3OnExecCtx);
static void BM_AcquireMutex(benchmark::State& state) {
TrackCounters track_counters(state);
// 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);
}
BENCHMARK(BM_AcquireMutex);
static void BM_TryAcquireMutex(benchmark::State& state) {
TrackCounters track_counters(state);
// 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);
}
BENCHMARK(BM_TryAcquireMutex);
static void BM_AcquireSpinlock(benchmark::State& state) {
TrackCounters track_counters(state);
// 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);
}
BENCHMARK(BM_AcquireSpinlock);
static void BM_TryAcquireSpinlock(benchmark::State& state) {
TrackCounters track_counters(state);
// 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);
}
BENCHMARK(BM_TryAcquireSpinlock);
static void BM_ClosureSchedOnCombiner(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_combiner* combiner = grpc_combiner_create(NULL);
grpc_closure c;
grpc_closure_init(&c, DoNothing, NULL,
grpc_combiner_scheduler(combiner, false));
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);
}
BENCHMARK(BM_ClosureSchedOnCombiner);
static void BM_ClosureSched2OnCombiner(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_combiner* combiner = grpc_combiner_create(NULL);
grpc_closure c1;
grpc_closure c2;
grpc_closure_init(&c1, DoNothing, NULL,
grpc_combiner_scheduler(combiner, false));
grpc_closure_init(&c2, DoNothing, NULL,
grpc_combiner_scheduler(combiner, false));
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);
}
BENCHMARK(BM_ClosureSched2OnCombiner);
static void BM_ClosureSched3OnCombiner(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_combiner* combiner = grpc_combiner_create(NULL);
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
grpc_closure_init(&c1, DoNothing, NULL,
grpc_combiner_scheduler(combiner, false));
grpc_closure_init(&c2, DoNothing, NULL,
grpc_combiner_scheduler(combiner, false));
grpc_closure_init(&c3, DoNothing, NULL,
grpc_combiner_scheduler(combiner, false));
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);
}
BENCHMARK(BM_ClosureSched3OnCombiner);
static void BM_ClosureSched2OnTwoCombiners(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_combiner* combiner1 = grpc_combiner_create(NULL);
grpc_combiner* combiner2 = grpc_combiner_create(NULL);
grpc_closure c1;
grpc_closure c2;
grpc_closure_init(&c1, DoNothing, NULL,
grpc_combiner_scheduler(combiner1, false));
grpc_closure_init(&c2, DoNothing, NULL,
grpc_combiner_scheduler(combiner2, false));
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);
}
BENCHMARK(BM_ClosureSched2OnTwoCombiners);
static void BM_ClosureSched4OnTwoCombiners(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_combiner* combiner1 = grpc_combiner_create(NULL);
grpc_combiner* combiner2 = grpc_combiner_create(NULL);
grpc_closure c1;
grpc_closure c2;
grpc_closure c3;
grpc_closure c4;
grpc_closure_init(&c1, DoNothing, NULL,
grpc_combiner_scheduler(combiner1, false));
grpc_closure_init(&c2, DoNothing, NULL,
grpc_combiner_scheduler(combiner2, false));
grpc_closure_init(&c3, DoNothing, NULL,
grpc_combiner_scheduler(combiner1, false));
grpc_closure_init(&c4, DoNothing, NULL,
grpc_combiner_scheduler(combiner2, false));
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);
}
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(state);
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);
}
BENCHMARK(BM_ClosureReschedOnExecCtx);
static void BM_ClosureReschedOnCombiner(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_combiner* combiner = grpc_combiner_create(NULL);
Rescheduler r(state, grpc_combiner_scheduler(combiner, false));
r.ScheduleFirst(&exec_ctx);
grpc_exec_ctx_flush(&exec_ctx);
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
}
BENCHMARK(BM_ClosureReschedOnCombiner);
static void BM_ClosureReschedOnCombinerFinally(benchmark::State& state) {
TrackCounters track_counters(state);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_combiner* combiner = grpc_combiner_create(NULL);
Rescheduler r(state, grpc_combiner_finally_scheduler(combiner, false));
r.ScheduleFirstAgainstDifferentScheduler(
&exec_ctx, grpc_combiner_scheduler(combiner, false));
grpc_exec_ctx_flush(&exec_ctx);
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "finished");
grpc_exec_ctx_finish(&exec_ctx);
}
BENCHMARK(BM_ClosureReschedOnCombinerFinally);
BENCHMARK_MAIN();