NICE(3C)                COMMAND REFERENCE                NICE(3C)



NAME
     nice - set program priority

SYNOPSIS
     int 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 problems from the administration.

     Negative increments are ignored except on behalf of the
     superuser.  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).

RETURN VALUE
     The nice utility returns -1 on failure, leaving the global
     variable errno set to indicate the error, and 0 on success.

SEE ALSO
     nice(1), renice(1), fork(2), and setpriority(2).
























Printed 3/13/89                                                 1

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