madrob commented on code in PR #13692: URL: https://github.com/apache/lucene/pull/13692#discussion_r1732934065
########## lucene/benchmark-jmh/src/java/org/apache/lucene/benchmark/jmh/AdvanceBenchmark.java: ########## @@ -0,0 +1,376 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.lucene.benchmark.jmh; + +import java.util.Arrays; +import java.util.Random; +import java.util.concurrent.TimeUnit; +import org.apache.lucene.search.DocIdSetIterator; +import org.openjdk.jmh.annotations.Benchmark; +import org.openjdk.jmh.annotations.BenchmarkMode; +import org.openjdk.jmh.annotations.CompilerControl; +import org.openjdk.jmh.annotations.Fork; +import org.openjdk.jmh.annotations.Level; +import org.openjdk.jmh.annotations.Measurement; +import org.openjdk.jmh.annotations.Mode; +import org.openjdk.jmh.annotations.OutputTimeUnit; +import org.openjdk.jmh.annotations.Scope; +import org.openjdk.jmh.annotations.Setup; +import org.openjdk.jmh.annotations.State; +import org.openjdk.jmh.annotations.Warmup; + +@BenchmarkMode(Mode.Throughput) +@OutputTimeUnit(TimeUnit.MILLISECONDS) +@State(Scope.Benchmark) +@Warmup(iterations = 5, time = 1) +@Measurement(iterations = 5, time = 1) +@Fork( + value = 1, + jvmArgsAppend = {"-Xmx1g", "-Xms1g", "-XX:+AlwaysPreTouch"}) +public class AdvanceBenchmark { + + private final long[] values = new long[129]; + private final int[] startIndexes = new int[1_000]; + private final long[] targets = new long[startIndexes.length]; + + @Setup(Level.Trial) + public void setup() throws Exception { + for (int i = 0; i < 128; ++i) { + values[i] = i; + } + values[128] = DocIdSetIterator.NO_MORE_DOCS; + Random r = new Random(0); + for (int i = 0; i < startIndexes.length; ++i) { + startIndexes[i] = r.nextInt(64); + targets[i] = startIndexes[i] + 1 + r.nextInt(1 << r.nextInt(7)); + } + } + + @Benchmark + public void binarySearch() { + for (int i = 0; i < startIndexes.length; ++i) { + binarySearch(values, targets[i], startIndexes[i]); Review Comment: This is my own lack of knowledge, do we need BlackHole.consume here or does the compiler control take care of that? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
