The activity module shows current active processes and their details, you can search within the list of activities, fetch general information (like load averages, number of processes, etc.) using the info button in the footer of the grid.

PID The process id of this process
USERNAME Username executed this process
PRI Current priority of the process
NICE NICE is the nice amount (in the range -20 to 20)
SIZE Total size of the process (text, data, and stack)
RES Current amount of resident memory, RAM currently in use by the process
C is the processor number on which the process is executing (visible only on SMP systems)
TIME The number of system and user cpu seconds that the process has used
WCPU Weighted cpu percentage
COMMAND Command string


The services page shows the configured services and status, you can stop/start/restart all of them here.