| /* |
| * 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 org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| import org.openjdk.jmh.annotations.Benchmark; |
| import org.openjdk.jmh.annotations.Scope; |
| import org.openjdk.jmh.annotations.Setup; |
| import org.openjdk.jmh.annotations.State; |
| import org.openjdk.jmh.annotations.TearDown; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Benchmarks Log4j 2, Log4j 1, and Logback using the DEBUG level which is disabled for this test. One of the primary |
| * performance concerns of logging frameworks is adding minimal overhead when logging is disabled. Some users disable |
| * all logging in production, while others disable finer logging levels in production. This benchmark demonstrates the |
| * overhead in calling {@code logger.isDebugEnabled()} and {@code logger.debug()}. |
| */ |
| // HOW TO RUN THIS TEST |
| // java -jar target/benchmarks.jar ".*DebugDisabledBenchmark.*" -f 1 -i 5 -wi 5 -bm sample -tu ns |
| @State(Scope.Thread) |
| public class DebugDisabledBenchmark { |
| Logger log4jLogger; |
| org.slf4j.Logger slf4jLogger; |
| org.apache.log4j.Logger log4jClassicLogger; |
| Integer j; |
| |
| @Setup |
| public void setUp() { |
| System.setProperty("log4j.configurationFile", "log4j2-perf2.xml"); |
| System.setProperty("log4j.configuration", "log4j12-perf2.xml"); |
| System.setProperty("logback.configurationFile", "logback-perf2.xml"); |
| |
| log4jLogger = LogManager.getLogger(DebugDisabledBenchmark.class); |
| slf4jLogger = LoggerFactory.getLogger(DebugDisabledBenchmark.class); |
| log4jClassicLogger = org.apache.log4j.Logger.getLogger(DebugDisabledBenchmark.class); |
| j = Integer.valueOf(2); |
| } |
| |
| @TearDown |
| public void tearDown() { |
| System.clearProperty("log4j.configurationFile"); |
| System.clearProperty("log4j.configuration"); |
| System.clearProperty("logback.configurationFile"); |
| } |
| |
| @Benchmark |
| public boolean baseline() { |
| return true; |
| } |
| |
| @Benchmark |
| public boolean log4jIsDebugEnabled() { |
| return log4jLogger.isDebugEnabled(); |
| } |
| |
| @Benchmark |
| public boolean slf4jIsDebugEnabled() { |
| return slf4jLogger.isDebugEnabled(); |
| } |
| |
| @Benchmark |
| public boolean log4jClassicIsDebugEnabled() { |
| return log4jClassicLogger.isDebugEnabled(); |
| } |
| |
| @Benchmark |
| public void log4jDebugStringConcatenation() { |
| log4jLogger.debug("This is a debug [" + j + "] message"); |
| } |
| |
| @Benchmark |
| public void slf4jDebugStringConcatenation() { |
| slf4jLogger.debug("This is a debug [" + j + "] message"); |
| } |
| |
| @Benchmark |
| public void log4jClassicDebugStringConcatenation() { |
| log4jClassicLogger.debug("This is a debug [" + j + "] message"); |
| } |
| |
| @Benchmark |
| public void log4jDebugParameterizedString() { |
| log4jLogger.debug("This is a debug [{}] message", j); |
| } |
| |
| @Benchmark |
| public void slf4jDebugParameterizedString() { |
| slf4jLogger.debug("This is a debug [{}] message", j); |
| } |
| } |