| /* |
| * 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.logging.log4j.perf.jmh; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Random; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.logging.log4j.perf.nogc.OpenHashStringMap; |
| import org.apache.logging.log4j.util.SortedArrayStringMap; |
| import org.apache.logging.log4j.util.BiConsumer; |
| import org.apache.logging.log4j.util.TriConsumer; |
| import org.openjdk.jmh.annotations.Benchmark; |
| import org.openjdk.jmh.annotations.BenchmarkMode; |
| import org.openjdk.jmh.annotations.Fork; |
| import org.openjdk.jmh.annotations.Measurement; |
| 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.Warmup; |
| |
| /** |
| * Compares performance of SortedArrayStringMap vs. OpenHashMap vs. JDK HashMap. |
| */ |
| // ============================== HOW TO RUN THIS TEST: ==================================== |
| // (Quick build: mvn -DskipTests=true clean package -pl log4j-perf -am ) |
| // |
| // single thread: |
| // java -jar log4j-perf/target/benchmarks.jar ".*SortedArrayVsHashMapBenchmark.*" -f 1 -wi 10 -i 20 -tu ns -bm sample |
| // |
| // |
| // Usage help: |
| // java -jar log4j-perf/target/benchmarks.jar -help |
| // |
| |
| @BenchmarkMode(Mode.AverageTime) |
| @OutputTimeUnit(TimeUnit.NANOSECONDS) |
| @Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS) |
| @Measurement(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS) |
| @Fork(1) |
| @State(Scope.Benchmark) |
| public class SortedArrayVsHashMapBenchmark { |
| |
| //@Param({"1", "2", "5", "11", "23", "47", "95", "191", "383"}) |
| //@Param({"1", "5", "50", "500"}) |
| @Param({ "5", "500"}) |
| public int count; |
| |
| //@Param({"5", "50"}) |
| @Param({"20"}) |
| public int length; |
| |
| private String[] keys; |
| private static Object value = new Object(); |
| private HashMap<String, Object> map; |
| private SortedArrayStringMap sortedStringArrayMap; |
| private OpenHashStringMap<String, Object> openHashMapContextData; |
| |
| private HashMap<String, Object> populatedMap; |
| private SortedArrayStringMap populatedSortedStringArrayMap; |
| private OpenHashStringMap<String, Object> populatedOpenHashContextData; |
| |
| @Setup |
| public void setup() { |
| openHashMapContextData = new OpenHashStringMap<>(); |
| sortedStringArrayMap = new SortedArrayStringMap(); |
| map = new HashMap<>(); |
| |
| keys = new String[count]; |
| final Random r = new Random(); |
| for (int j = 0; j < keys.length; j++) { |
| final char[] str = new char[length]; |
| for (int i = 0; i < str.length; i++) { |
| str[i] = (char) r.nextInt(); |
| } |
| keys[j] = new String(str); |
| } |
| |
| populatedMap = new HashMap<>(); |
| for (int i = 0; i < count; i++) { |
| populatedMap.put(keys[i], value); |
| } |
| populatedSortedStringArrayMap = new SortedArrayStringMap(); |
| for (int i = 0; i < count; i++) { |
| populatedSortedStringArrayMap.putValue(keys[i], value); |
| } |
| populatedOpenHashContextData = new OpenHashStringMap<>(); |
| for (int i = 0; i < count; i++) { |
| populatedOpenHashContextData.putValue(keys[i], value); |
| } |
| } |
| |
| @Benchmark |
| public SortedArrayStringMap putAllArrayContextData() { |
| sortedStringArrayMap.clear(); |
| sortedStringArrayMap.putAll(populatedSortedStringArrayMap); |
| return sortedStringArrayMap; |
| } |
| |
| @Benchmark |
| public OpenHashStringMap<String, Object> putAllHashContextData() { |
| openHashMapContextData.clear(); |
| openHashMapContextData.putAll(populatedOpenHashContextData); |
| return openHashMapContextData; |
| } |
| |
| @Benchmark |
| public Map putAllMap() { |
| map.clear(); |
| map.putAll(populatedMap); |
| return map; |
| } |
| |
| @Benchmark |
| public SortedArrayStringMap cloneArrayContextData() { |
| return new SortedArrayStringMap(populatedSortedStringArrayMap); |
| } |
| |
| @Benchmark |
| public OpenHashStringMap<String, Object> cloneHashContextData() { |
| return new OpenHashStringMap<>(populatedOpenHashContextData); |
| } |
| |
| @Benchmark |
| public Map cloneMap() { |
| return new HashMap(populatedMap); |
| } |
| |
| static TriConsumer<String, Object, int[]> COUNTER = (s, o, result) -> result[0] += s.hashCode() + o.hashCode(); |
| |
| @Benchmark |
| public int iterateArrayContextDataTriConsumer() { |
| final int[] result = {0}; |
| |
| populatedSortedStringArrayMap.forEach(COUNTER, result); |
| return result[0]; |
| } |
| |
| @Benchmark |
| public int iterateHashContextDataTriConsumer() { |
| final int[] result = {0}; |
| |
| populatedOpenHashContextData.forEach(COUNTER, result); |
| return result[0]; |
| } |
| |
| @Benchmark |
| public int iterateArrayContextDataBiConsumer() { |
| final int[] result = {0}; |
| |
| populatedSortedStringArrayMap.forEach((s, o) -> result[0] += s.hashCode() + o.hashCode()); |
| return result[0]; |
| } |
| |
| @Benchmark |
| public int iterateHashContextDataBiConsumer() { |
| final int[] result = {0}; |
| |
| populatedOpenHashContextData.forEach((s, o) -> result[0] += s.hashCode() + o.hashCode()); |
| return result[0]; |
| } |
| |
| @Benchmark |
| public int iterateMap() { |
| final int[] result = {0}; |
| |
| for (final Map.Entry<String, Object> entry : populatedMap.entrySet()) { |
| result[0] += entry.getKey().hashCode() + entry.getValue().hashCode(); |
| } |
| return result[0]; |
| } |
| |
| @Benchmark |
| public Object getValueArrayContextData() { |
| return populatedSortedStringArrayMap.getValue(keys[count - 1]); |
| } |
| |
| @Benchmark |
| public Object getValueHashContextData() { |
| return populatedOpenHashContextData.getValue(keys[count - 1]); |
| } |
| |
| @Benchmark |
| public Object getValueMap() { |
| return populatedMap.get(keys[count - 1]); |
| } |
| |
| @Benchmark |
| public int putArrayContextData() { |
| populatedSortedStringArrayMap.putValue("someKey", "someValue"); |
| return populatedSortedStringArrayMap.size(); |
| } |
| |
| @Benchmark |
| public int putHashContextData() { |
| openHashMapContextData.put("someKey", "someValue"); |
| return openHashMapContextData.size(); |
| } |
| |
| @Benchmark |
| public int putMap() { |
| map.put("someKey", "someValue"); |
| return map.size(); |
| } |
| } |