java 如何从正在运行的 JBoss 实例生成和分析线程转储？
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How do you generate and analyze a thread dump from a running JBoss instance?
提问by Teflon Ted
How do you generate and analyze a thread dump from a running JBoss instance?
如何从正在运行的 JBoss 实例生成和分析线程转储？
采纳答案by Matt Solnit
There is a JBoss-specific method that is slightly more user-friendly:
有一个 JBoss 特定的方法对用户更友好一些：
http://community.jboss.org/wiki/GenerateAThreadDumpWithTheJMXConsole
http://community.jboss.org/wiki/GenerateAThreadDumpWithTheJMXConsole
This is especially useful when you don't have direct access to the host machine (which "kill" would require).
当您无法直接访问主机（“杀死”需要）时，这尤其有用。
回答by Teflon Ted
http://java.sun.com/developer/technicalArticles/Programming/Stacktrace/
http://java.sun.com/developer/technicalArticles/Programming/Stacktrace/
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"On UNIX platforms you can send a signal to a program by using the kill command. This is the quit signal, which is handled by the JVM. For example, on Solaris you can use the command kill -QUIT process_id, where process_id is the process number of your Java program.
“在 UNIX 平台上，您可以使用 kill 命令向程序发送信号。这是退出信号，由 JVM 处理。例如，在 Solaris 上，您可以使用 kill -QUIT process_id 命令，其中 process_id 是Java 程序的进程号。
Alternatively you can enter the key sequence <ctrl>\ in the window where the Java program was started. Sending this signal instructs a signal handler in the JVM, to recursively print out all the information on the threads and monitors inside the JVM."
或者，您可以在启动 Java 程序的窗口中输入键序列 <ctrl>\。发送此信号会指示 JVM 中的信号处理程序，以递归方式打印出有关 JVM 内线程和监视器的所有信息。”
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"Determining the Thread States
"确定线程状态
You will see many different threads in many different states in a snapshot from a JVM stack trace. The key used is:
您将在来自 JVM 堆栈跟踪的快照中看到处于许多不同状态的许多不同线程。使用的密钥是：
R Running or runnable thread
R 正在运行或可运行的线程
S Suspended thread
S 悬线
CW Thread waiting on a condition variable
CW 线程等待条件变量
MW Thread waiting on a monitor lock
等待监视器锁的 MW 线程
MS Thread suspended waiting on a monitor lock"
MS 线程暂停等待监视器锁”
回答by Andrei
回答by user98761
Thread.getAllStackTraces() (since Java 1.5)
Thread.getAllStackTraces()（从 Java 1.5 开始）
回答by Stephan
Two options:
两种选择：
OPTION 1Generate a thread dump using JMX Console
选项 1使用 JMX 控制台生成线程转储
In order to generate a thread dump:
为了生成线程转储：
- Open the JMXConsole (for example:
http://localhost:8080) - Navigate to
jboss.system:type=ServerInfombean (hint:you can probably just CTRL-F and enter type=ServerInfo in the dialog box) - Click on the link for the Server Info mbean.
- Navigate to the bottom where it says
listThreadDump - Click it and get your thread dump
- 打开JMXConsole（例如：
http://localhost:8080） - 导航到
jboss.system:type=ServerInfombean（提示：您可能只需按 CTRL-F 并在对话框中输入 type=ServerInfo） - 单击服务器信息 mbean 的链接。
- 导航到它说的底部
listThreadDump - 单击它并获取您的线程转储
Notes:
笔记：
If you are using Internet Explorer you should use File > Save Asto save the output instead of copying the data to a text editor. For some reason when you copy the text from Internet Explorer the line breaks are not copied and all of the output ends up on a single line.
如果您使用 Internet Explorer，您应该使用File > Save As保存输出而不是将数据复制到文本编辑器。出于某种原因，当您从 Internet Explorer 复制文本时，不会复制换行符，并且所有输出最终都在一行中。
OPTION 2Generate a Thread Dump using Twiddle
选项 2使用 Twiddle 生成线程转储
Alternatively you can use twiddle to execute the listThreadDump()method and pipe the returned HTML directly to file. Use this command line:
或者，您可以使用 twiddle 执行该listThreadDump()方法并将返回的 HTML 直接通过管道传输到文件。使用这个命令行：
<JBOSS_HOME>/bin/twiddle invoke "jboss.system:type=ServerInfo" listThreadDump > threads.html
回答by Vadzim
https://community.jboss.org/wiki/ThreadDumpJSPpage features standalone self-contained threaddump.war that can be used without JMX.
https://community.jboss.org/wiki/ThreadDumpJSP页面具有独立的自包含 threaddump.war，无需 JMX 即可使用。
回答by Vadzim
Sometimes JBoss locks so much that even jmx-concole doesn't respond. In such case use kill -3 on Linux and SendSignalon Windows.
有时 JBoss 锁定太多，甚至 jmx-concole 都没有响应。在这种情况下，在 Linux上使用 kill -3，在 Windows上使用SendSignal。
