Process State Summary

This section of the display shows the total number of processes and how many are in each of the various process states.

State names vary across systems. Here is a list of the more common state names:

On cpu Assigned to a CPU and currently running
Running Currently able to run
Sleeping Awaiting an external event, such as input from a device
Stopped Stopped by a signal, as with control Z
Swapped Virtual address space swapped out to disk
Zombie Exited, but parent has not called "wait" to receive the exit status