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arthas/tutorials/katacoda/command-jvm-cn/notes-on-column-headers.md

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### THREAD相关
* `COUNT`: JVM当前活跃的线程数
* `DAEMON-COUNT`: JVM当前活跃的守护线程数
* `PEAK-COUNT`: 从JVM启动开始曾经活着的最大线程数
* `STARTED-COUNT`: 从JVM启动开始总共启动过的线程次数
* `DEADLOCK-COUNT`: JVM当前死锁的线程数
### 文件描述符相关
* `MAX-FILE-DESCRIPTOR-COUNT`JVM进程最大可以打开的文件描述符数
* `OPEN-FILE-DESCRIPTOR-COUNT`JVM当前打开的文件描述符数