/** * Copyright 2014 Netflix, Inc. * * 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. */ package rx.subscriptions; import java.util.concurrent.TimeUnit; import org.openjdk.jmh.annotations.Benchmark; import org.openjdk.jmh.annotations.BenchmarkMode; import org.openjdk.jmh.annotations.Group; import org.openjdk.jmh.annotations.GroupThreads; import org.openjdk.jmh.annotations.Mode; import org.openjdk.jmh.annotations.OutputTimeUnit; import org.openjdk.jmh.annotations.Param; import org.openjdk.jmh.annotations.Scope; import org.openjdk.jmh.annotations.Setup; import org.openjdk.jmh.annotations.State; import org.openjdk.jmh.annotations.Threads; import rx.Subscription; /** * Benchmark typical composite subscription concurrent behavior. * <p> * gradlew benchmarks "-Pjmh=-f 1 -tu s -bm thrpt -wi 5 -i 5 -r 1 .*CompositeSubscriptionConcurrentPerf.*" * <p> * gradlew benchmarks "-Pjmh=-f 1 -tu ns -bm avgt -wi 5 -i 5 -r 1 .*CompositeSubscriptionConcurrentPerf.*" */ @BenchmarkMode(Mode.Throughput) @OutputTimeUnit(TimeUnit.SECONDS) @Threads(2) @State(Scope.Group) public class CompositeSubscriptionConcurrentPerf { @Param({ "1", "1000", "100000" }) public int loop; public final CompositeSubscription csub = new CompositeSubscription(); @Param({ "1", "5", "10", "20" }) public int count; public Subscription[] values; @Setup public void setup() { values = new Subscription[count * 2]; for (int i = 0; i < count * 2; i++) { values[i] = new Subscription() { @Override public boolean isUnsubscribed() { return false; } @Override public void unsubscribe() { } }; } } @Group("g1") @GroupThreads(1) @Benchmark public void addRemoveT1() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; for (int i = loop; i > 0; i--) { for (int j = values.length - 1; j >= 0; j--) { csub.add(values[j]); } for (int j = values.length - 1; j >= 0; j--) { csub.remove(values[j]); } } } @Group("g1") @GroupThreads(1) @Benchmark public void addRemoveT2() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; for (int i = loop; i > 0; i--) { for (int j = values.length - 1; j >= 0; j--) { csub.add(values[j]); } for (int j = values.length - 1; j >= 0; j--) { csub.remove(values[j]); } } } @Group("g2") @GroupThreads(1) @Benchmark public void addRemoveHalfT1() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; int n = values.length; for (int i = loop; i > 0; i--) { for (int j = n / 2 - 1; j >= 0; j--) { csub.add(values[j]); } for (int j = n / 2 - 1; j >= 0; j--) { csub.remove(values[j]); } } } @Group("g2") @GroupThreads(1) @Benchmark public void addRemoveHalfT2() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; int n = values.length; for (int i = loop; i > 0; i--) { for (int j = n - 1; j >= n / 2; j--) { csub.add(values[j]); } for (int j = n - 1; j >= n / 2; j--) { csub.remove(values[j]); } } } @Group("g3") @GroupThreads(1) @Benchmark public void addClearT1() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; for (int i = loop; i > 0; i--) { for (int j = values.length - 1; j >= 0; j--) { csub.add(values[j]); } csub.clear(); } } @Group("g3") @GroupThreads(1) @Benchmark public void addClearT2() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; for (int i = loop; i > 0; i--) { for (int j = values.length - 1; j >= 0; j--) { csub.add(values[j]); } for (int j = values.length - 1; j >= 0; j--) { csub.remove(values[j]); } } } @Group("g4") @GroupThreads(1) @Benchmark public void addClearHalfT1() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; int n = values.length; for (int i = loop; i > 0; i--) { for (int j = n / 2 - 1; j >= 0; j--) { csub.add(values[j]); } csub.clear(); } } @Group("g4") @GroupThreads(1) @Benchmark public void addClearHalfT2() { CompositeSubscription csub = this.csub; Subscription[] values = this.values; int n = values.length; for (int i = loop; i > 0; i--) { for (int j = n - 1; j >= n / 2; j--) { csub.add(values[j]); } csub.clear(); } } }