This is the same information contained in the header line displayed by w(1).
System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable state is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for disk. The averages are taken over the three time intervals. Load averages are not normalized for the number of CPUs in a system, so a load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.
- -p, --pretty
- show uptime in pretty format
- -h, --help
- display this help text
- -s, --since
- system up since, in yyyy-mm-dd HH:MM:SS format
- -V, --version
- display version information and exit
- information about who is currently logged on
- process information