nice(3)

NAME

nice - set program scheduling priority

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <unistd.h>
int
nice(int incr);

DESCRIPTION

This interface is obsoleted by setpriority(2).

The nice() function obtains the scheduling priority of the

process from
the system and sets it to the priority value specified in

incr. The priority is a value in the range -20 to 20. The default prior

ity is 0;
lower priorities cause more favorable scheduling. Only the

super-user
may lower priorities.

Children inherit the priority of their parent processes via

fork(2).

SEE ALSO

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

HISTORY

A nice() syscall appeared in Version 6 AT&T UNIX.

BSD June 4, 1993

BSD