jstack

Introduction

jstack is used to view the thread stack information of a Java process.

Installation Mode

Use OpenJDK to install this tool. For Bisheng JDK, it is a built-in tool.

Usage

• If a Java environment is configured, you can directly run the jstack command.
• If no Java environment is not configured, run the ps -ef | grep java command to find the Java process. Then, switch to the JDK bin directory and run the ./jstack command.

  Syntax:

  1	jstack -l $pid > jstack.log

  

  This command is used to save jstack logs to the local jstack.log file.

  Common parameters are as follows:

  Parameter	Description
  -F	Forcibly prints the stack information when the jstack does not respond.
  -l	Adds the lock information in addition to the common stack information.
  -m	Displays all stack information of the Java and native C/C++ frameworks in hybrid mode.