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@(#)nice.3 6.1 (Berkeley) 05/09/85

C 4 nice - set program priority nice(incr) This interface is obsoleted by setpriority(2).

The scheduling priority of the process is augmented by incr . Positive priorities get less service than normal. Priority 10 is recommended to users who wish to execute long-running programs without flak from the administration.

Negative increments are ignored except on behalf of the super-user. The priority is limited to the range -20 (most urgent) to 20 (least).

The priority of a process is passed to a child process by fork (2). For a privileged process to return to normal priority from an unknown state, nice should be called successively with arguments -40 (goes to priority -20 because of truncation), 20 (to get to 0), then 0 (to maintain compatibility with previous versions of this call).

nice(1), setpriority(2), fork(2), renice(8)