Java 日志框架log4j 和logback 打印一条语句所用的时间比较

最新推荐文章于 2023-10-24 18:32:40 发布

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#Log4j #logback

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本文通过实际测试比较了Logback、Log4j及自定义LogUtil三种日志框架的性能表现，结果显示Logback在处理相同数量的日志记录时速度明显优于Log4j，且随着日志长度增加，两者的效率差距逐渐减小。

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话不多说，先上代码：

/**   
 * @Project: sagtest 
 * @Title: TestLog.java 
 * @Package: com.bestpay.sag.junit.test 
 * @Description: TODO 
 * @Author: weizhi2018  weizs_999@163.com
 * @CreateDate: 2013-8-9 下午03:59:10 
 * @Copyright: 2013  
 * @Version: V1.0   
 */

package com.bestpay.sag.junit.test;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @ClassName TestLog
 * @Description TODO
 * @Author weizhi2018
 * @Date 2013-8-9 下午03:59:10
 * 
 */

public class TestLog {

	private static Logger LOGBACK = LoggerFactory.getLogger(TestLog.class);

	private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger
			.getLogger(TestLog.class);
	
	private static LogUtil LOGUTIL = LogUtil.getLogger(TestLog.class);
	/**
	 * @Title main
	 * @Description TODO
	 * @Author weizhi2018
	 * @param @param args
	 * @return void
	 * @throws
	 */

	public static void main(String[] args) {

		String logstr = "abcdefg1234567890,.;'[]-==@!@#$%^&*()_+河南";
		int lines = 10000;
		

		long startTimeLogback = System.currentTimeMillis();
		for (int i = 0; i < lines; i++) {
			LOGBACK.info(logstr);
		}
		long endTimeLogback = System.currentTimeMillis();
		
		long startTimeLog = System.currentTimeMillis();
		for (int i = 0; i < lines; i++) {
			LOG.info(logstr);
		}
		long endTimeLog = System.currentTimeMillis();
		
		
		long startTimeLogUtil = System.currentTimeMillis();
		for (int i = 0; i < lines; i++) {
			LOGUTIL.info(logstr);
		}
		long endTimeLogUtil = System.currentTimeMillis();
		
		
		LOGBACK.info("日志长度:{}", logstr.length());
		LOGBACK.info("日志行数:{}", lines);
		LOGBACK.info("Logback耗时(ms):{}", endTimeLogback - startTimeLogback);
		LOGBACK.info("Log4j耗时(ms):{}", endTimeLog - startTimeLog);
		LOGBACK.info("LogUtil耗时(ms):{}", endTimeLogUtil - startTimeLogUtil);
	}

}

LogUtil.java

/**   
 * @Project: TestLog 
 * @Title: LogUtil.java 
 * @Package: com.bestpay.sag.junit.test 
 * @Description: TODO 
 * @Author: weizhi2018  weizs_999@163.com
 * @CreateDate: 2013-8-9 下午04:40:43 
 * @Copyright: 2013  
 * @Version: V1.0   
 */

package com.bestpay.sag.junit.test;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @ClassName LogUtil
 * @Description TODO
 * @Author weizhi2018 
 * @Date 2013-8-9 下午04:40:43 
 *
 */

public class LogUtil {

	private Logger instance;
	
	public static LogUtil getLogger(Class clazz){
		LogUtil logUtil = new LogUtil();
		logUtil.setInstance(LoggerFactory.getLogger(clazz));
		return logUtil;
	}

	public void info(String arg0){
		this.getInstance().info(arg0);
	}
	
	public void info(String arg0,Object arg1){
		this.getInstance().info(arg0,arg1);
	}

	public Logger getInstance() {
		return instance;
	}

	public void setInstance(Logger instance) {
		this.instance = instance;
	}

}

输出结果：

2013-08-09 10:59:16:[INFO]  [main] 4865  日志长度:41
2013-08-09 10:59:16:[INFO]  [main] 4865  日志行数:10000
2013-08-09 10:59:16:[INFO]  [main] 4865  Logback耗时(ms):860
2013-08-09 10:59:16:[INFO]  [main] 4865  Log4j耗时(ms):2441
2013-08-09 10:59:16:[INFO]  [main] 4865  LogUtil耗时(ms):1111

经比对可发现，log4j 与 logback 打印相同日志的时间在3：1

而且进一步验证发，日志长度越长，两者比例会变小，在100个字符长度时，log4j：logback = 3：2 左右