Arthas is a Java application diagnosis tool open sourced by Alibaba. It can help developers quickly locate problems in applications and improve application performance and stability. This article will introduce the basic usage of Arthas and examples of common commands to help readers gain a deeper understanding of this powerful tool.
1. Install Arthas
The installation of Arthas is very simple, just execute the following command on the command line:
curl -O https://alibaba.github.io/arthas/arthas-boot.jar
java -jar arthas-boot.jar
2. Connect application
Connecting the application is the first step in using Arthas. You can use the following command to connect to the running Java application:
./as.sh <pid>
Among them, <pid>is the process ID of the Java application. After the connection is successful, Arthas will enter the interactive mode, and you can enter commands for diagnosis.
3. Examples of common commands
- View application thread information
thread
- View application heap memory information
jvm
- View application GC information
gc
- View application classloading information
class
- View application method call information
trace <class> <method>
where <class>is the class name and <method>is the method name.
Four. Summary
Arthas is a very powerful Java application diagnostic tool that can help developers quickly locate problems in applications. This article introduces the basic usage of Arthas and examples of common commands. I hope readers can understand the powerful functions of Arthas through this article and improve the performance and stability of the application.