Alibaba arthas tutorial for newbies

background

Arthas It is Alibaba's open source Java diagnostic tool.

github open source address: GitHub - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java Diagnostic Tool Arthas

Getting Started Tutorial

1. Download arthas and test run the demo

curl -O https://arthas.aliyun.com/arthas-boot.jar 
java -jar arthas-boot.jar

2. idea configure arthas command auxiliary plug-in

Search in the idea plug-in repository: arthas idea

Plug-in introduction: arthas idea - IntelliJ IDEs Plugin | Marketplace

Run a demo

1. I wrote a java demo to test the use of arthas

public class Demo {

    public static void main(String[] args) {
        for (int i = 0; i < 10; i++) {
            getInfo(String.valueOf(i));
        }
    }

    private static void getInfo(String params) {
        System.out.println(params);
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

2. Use the plug-in, right-click the method and find the appropriate arthas command.

 What I have here: trace -E arthas.Demo|formal.util.date.Display getInfo|main -n 5 --skipJDKMethod false '1==1'

3. Start the java process

4. Start arthas and change the default port to prevent port conflicts

java -jar arthas-boot.jar --telnet-port 9998 --http-port -1

5. Select the corresponding java process, enter arthas, and then paste the above arthas command into it

trace -E arthas.Demo|formal.util.date.Display getInfo|main -n 5  --skipJDKMethod false '1==1'

6. Check the running results and analyze the time-consuming method