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System administrators are interested in system load
This is what is reported by the uptime command:
7:19pm up 65 days, 7:23, 24 users, load average: 0.22, 0.44, 0.81
And by tools like xload
It is the average number of jobs that are ready to be run
(This omits jobs that are sleeping, waiting for I/O, etc.)
If it exceeds the number of CPUs, then the system is overloaded
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