### 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