- processes
Process counts: Number of running, sleeping, zombie, ... processes.
+ - procevent
+ Listens for process starts and exits via netlink.
+
- protocols
Counts various aspects of network protocols such as IP, TCP, UDP, etc.
Acts as a StatsD server, reading values sent over the network from StatsD
clients and calculating rates and other aggregates out of these values.
+ - sysevent
+ Listens to rsyslog events and submits matched values.
+
- swap
Pages swapped out onto hard disk or whatever is called `swap' by the OS..