| package org.apache.metron.common.utils; |
| |
| /** |
| * 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. |
| */ |
| import java.lang.invoke.MethodHandles; |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.apache.commons.lang3.RandomStringUtils; |
| import org.apache.commons.math3.stat.descriptive.DescriptiveStatistics; |
| import org.apache.commons.math3.stat.descriptive.StatisticalSummary; |
| import org.json.simple.JSONObject; |
| import org.junit.Ignore; |
| import org.junit.Test; |
| |
| /** |
| * Performance test for lazy logging. |
| * By default the test is disabled due to it taking too much time to run during normal unit testing. |
| * comment out the ignore attribute to allow test to run |
| */ |
| public class LazzyLoggerImplPerfTest { |
| private static final LazyLogger LOG = LazyLoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| private static final double NANO_TO_MILLIS = 1e6; |
| private static final String PATH = "/foo/bar/baz"; |
| |
| public interface Operation { |
| void run(); |
| } |
| |
| @Test |
| @Ignore |
| public void calcTimes() { |
| Map<String, Object> smallMap = new HashMap<>(); |
| for (int i = 0; i < 10; i++) { |
| smallMap.put("key" + i, RandomStringUtils.randomAlphabetic(10)); |
| } |
| Map<String, Object> largeMap = new HashMap<>(); |
| for (int i = 0; i < 500; i++) { |
| largeMap.put("key" + i, RandomStringUtils.randomAlphabetic(1000)); |
| } |
| JSONObject largeObject = new JSONObject(largeMap); |
| JSONObject smallObject = new JSONObject(smallMap); |
| int reps = 1000; |
| |
| StatisticalSummary summary = runTrial(reps, () -> { |
| LOG.trace("Writing message {} to path: {}", smallObject.toJSONString(), PATH); |
| }); |
| printSummary(String.format("Small object %s times", reps), summary); |
| |
| summary = runTrial(reps, () -> { |
| LOG.trace("Writing message {} to path: {}", () -> smallObject.toJSONString(), () -> PATH); |
| }); |
| printSummary(String.format("Small object %s times using lazy logging", reps), summary); |
| |
| |
| summary = runTrial(reps, () -> { |
| LOG.trace("Writing message {} to path: {}", largeObject.toJSONString(), PATH); |
| }); |
| printSummary(String.format("Large object %s times", reps), summary); |
| |
| summary = runTrial(reps, () -> { |
| LOG.trace("Writing message {} to path: {}", () -> largeObject.toJSONString(), () -> PATH); |
| }); |
| printSummary(String.format("Large object %s times using lazy logging", reps), summary); |
| |
| summary = runTrial(reps, () -> { |
| LOG.trace("Writing message {} to path: {}", "hello", PATH); |
| }); |
| printSummary(String.format("Simple string %s times", reps), summary); |
| |
| summary = runTrial(reps, () -> { |
| LOG.trace("Writing message {} to path: {}", () -> "hello", () -> PATH); |
| }); |
| printSummary(String.format("Simple string %s times using lazy logging", reps), summary); |
| } |
| |
| |
| private StatisticalSummary runTrial(int reps, Operation operation) { |
| DescriptiveStatistics stats = new DescriptiveStatistics(); |
| long trialTime = timeOperation(() -> { |
| for (int i = 0; i < reps; i++) { |
| long time = timeOperation(operation); |
| stats.addValue(time / NANO_TO_MILLIS); |
| } |
| }); |
| System.out.println("Total trial time (ms): " + (trialTime / NANO_TO_MILLIS)); |
| return stats; |
| } |
| |
| private long timeOperation(Operation o) { |
| final long start = System.nanoTime(); |
| o.run(); |
| final long finish = System.nanoTime(); |
| return finish - start; |
| } |
| |
| private void printSummary(String desc, StatisticalSummary summary) { |
| final String border = "==============================="; |
| System.out.println(border); |
| System.out.println(desc); |
| System.out.println(summary.toString()); |
| System.out.println(border); |
| } |
| } |