Copyright (c) 1980 Regents of the University of California.
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.
@(#)nice.3 6.1 (Berkeley) 05/09/85
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.
@(#)nice.3 6.1 (Berkeley) 05/09/85
NICE 3C ""
C 4 NAME
nice - set program priority
SYNOPSIS
nice(incr) DESCRIPTION
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).
"SEE ALSO"
nice(1), setpriority(2), fork(2), renice(8)