/** * Logback: the reliable, generic, fast and flexible logging framework. * Copyright (C) 1999-2015, QOS.ch. All rights reserved. * * This program and the accompanying materials are dual-licensed under * either the terms of the Eclipse Public License v1.0 as published by * the Eclipse Foundation * * or (per the licensee's choosing) * * under the terms of the GNU Lesser General Public License version 2.1 * as published by the Free Software Foundation. */ package ch.qos.logback.classic.issue.lbcore243; import ch.qos.logback.classic.LoggerContext; import ch.qos.logback.classic.joran.JoranConfigurator; import ch.qos.logback.core.joran.spi.JoranException; import org.apache.log4j.xml.DOMConfigurator; import org.slf4j.Logger; import org.slf4j.LoggerFactory; // WARNING This code compiles but does not measure anything useful because log4j-over-slf4j is a dependency. Log4j // should be used instead public class PerformanceComparatorLog4j { static org.apache.log4j.Logger log4jlogger = org.apache.log4j.Logger.getLogger(PerformanceComparatorLog4j.class); public static void main(String[] args) throws JoranException, InterruptedException { initLog4jWithoutImmediateFlush(); // Let's run once for Just In Time compiler log4jDirectDebugCall(); System.out.println("###############################################"); System.out.println("Log4j without immediate flush: " + log4jDirectDebugCall() + " nanos per call"); System.out.println("###############################################"); } private static long log4jDirectDebugCall() { Integer j = new Integer(2); long start = System.nanoTime(); for (int i = 0; i < Common.loop; i++) { log4jlogger.debug("SEE IF THIS IS LOGGED " + j + "."); } return (System.nanoTime() - start) / Common.loop; } static String DIR_PREFIX = "src/test/java/ch/qos/logback/classic/issue/lbcore243/"; static void initLog4jWithoutImmediateFlush() { DOMConfigurator domConfigurator = new DOMConfigurator(); domConfigurator.configure(DIR_PREFIX + "log4j_without_immediateFlush.xml"); } static void initLog4jWithImmediateFlush() { DOMConfigurator domConfigurator = new DOMConfigurator(); domConfigurator.configure(DIR_PREFIX + "log4j_with_immediateFlush.xml"); } }