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Absolute FreeBSD, 2nd Edition by Michael W. Lucas

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CPU, Memory, and I/O with top(1)

The top(1) tool provides a good overview of system status, displaying information about CPU, memory, and disk usage. Just type top to get a full-screen display of system performance data. The display updates every two seconds, so you have a fairly accurate, close to real-time system view.

last pid:    977;  load averages:   1.14,   0.80,  0.18  up 0+00:18:03  18:30:34
 41 processes:  2 running, 39 sleeping
 CPU states: 0.0% user, ...

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