青海网站建设怎么建设,建网站学什么专业,seo网络营销推广,做网站流量赚钱StopWatch在单个文件的单个方法中确时还蛮好用的#xff0c;但跨多个文件#xff0c;多个方法的同一线程内调试就有明显的不舒服。一是要建立ThreadLocal共享StopWatch的实例。二是StopWatch的start和stop必须形成闭合。在方法嵌套的场景。比如要查看大方法执行时间#xff…StopWatch在单个文件的单个方法中确时还蛮好用的但跨多个文件多个方法的同一线程内调试就有明显的不舒服。一是要建立ThreadLocal共享StopWatch的实例。二是StopWatch的start和stop必须形成闭合。在方法嵌套的场景。比如要查看大方法执行时间还要查看大方法里面的某个调用的执行时间。这就没法做到了。3就是StopWatch以纳秒为单位阅读不舒服非高并发网站没那么高的要求毫秒即可因此做了这款调试工作。只记录线程某些栈节点的抵达时间。形成一个时间轴。最后打印这个时间轴的相邻时间差即可。调试中只要确定费时的代码在哪个小区间一般有经验的话能很快定位到问题代码。 效果如下图 代码实现 有需要的可以拿去美化下
public class RunnerAnalyzer {private final static ThreadLocalListRunnerInfo CONTAINER new ThreadLocal();public static void start(String nodeName) {ListRunnerInfo runnerInfos CONTAINER.get();if (null runnerInfos) {CONTAINER.set(new ArrayList());}ListRunnerInfo container CONTAINER.get();container.add(new RunnerInfo(nodeName));CONTAINER.set(container);}public static void clear() {CONTAINER.remove();}public static void prettyPrint(long moreThanTime) {RunnerAnalyzer.start(耗时记录结束);ListRunnerInfo runnerInfos CONTAINER.get();if (null runnerInfos) {return;}int size runnerInfos.size();int lastIndex size - 1;RunnerInfo first runnerInfos.get(0);RunnerInfo last runnerInfos.get(lastIndex);long totalTime last.getTime() - first.getTime();// 只打印超过某一时间的免得压力测试的时候疯狂刷if (totalTime moreThanTime) {return;}StringBuilder sb new StringBuilder();sb.append(---------------------------------------------\n);String totalMessage 总耗时 totalTime \n;sb.append(totalMessage);String title 抵达时间 耗时 占比 节点名称\n;sb.append(title);for (int i 0; i size; i) {RunnerInfo runnerInfo runnerInfos.get(i);String showTimeName runnerInfo.getShowTime() ;sb.append(showTimeName);if (i ! 0) {RunnerInfo lastNode runnerInfos.get(i - 1);long lastNodeTime lastNode.getTime();long during runnerInfo.getTime() - lastNodeTime;String duringStr during ;sb.append(duringStr);String rate ZYNumberUtils.rate(during, totalTime) ;sb.append(rate);} else {sb.append(0 );sb.append( );}String nodeName runnerInfo.getNodeName() \n;sb.append(nodeName);}sb.append(---------------------------------------------\n);System.out.println(sb.toString());clear();}
}
public class RunnerInfo {private String nodeName;private long time;private String showTime;public RunnerInfo(String nodeName) {this.nodeName nodeName;Date date new Date();this.time date.getTime();this.showTime ZYDateUtils.formart(date, yyyy-MM-dd HH:mm:ss:SSS);}
}
