text: 
  ### Thread related
  
  * `COUNT`: the count of active threads
  
  * `DAEMON-COUNT`: the count of active daemon threads
  
  * `PEAK-COUNT`: the maximum count of the live threads since JVM starts
  
  * `STARTED-COUNT`: the total count of the created threads since JVM starts
  
  * `DEADLOCK-COUNT`: the count of deadlocked threads
  
  ### File descriptor related
  
  * `MAX-FILE-DESCRIPTOR-COUNT`：the count of max file descriptor JVM process can open
  
  * `OPEN-FILE-DESCRIPTOR-COUNT`：the current count of file descriptor JVM process open
  