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researchv10 Dan Cross

.TH NICE 2
.CT 2 time_man
.SH NAME
nice \(mi set program priority
.SH SYNOPSIS
.B void nice(incr)
.SH DESCRIPTION
The scheduling
priority of the process is augmented by
.IR 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.
Priority 19 is recommended for programs
that should only execute in ``idle'' time.
.PP
Only the super-user can effect negative increments.
Priorities less than \-20
(most urgent)
are treated as \-20.
Priorities greater than 19
are treated as 19.
.PP
The priority of a process is
passed to a child process by
.IR fork (2).
For a privileged process to return to normal priority
from an unknown state,
.I nice
should be called successively with arguments
\-40
(goes to priority
\-20
because of truncation),
then 20
(to get to 0).
.SH "SEE ALSO"
.IR nice (1),
.IR fork (2)

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