[unix-history] / usr / man / man2 / nice.2

.TH NICE 2 
.SH NAME
nice \- set program priority
.SH SYNOPSIS
.B 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.
.PP
Negative increments are ignored except on behalf of 
the super-user.
The priority is limited to the range
\-20 (most urgent) to 20 (least).
.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),
20 (to get to 0),
then 0 (to maintain compatibility with previous versions
of this call).
.SH "SEE ALSO"
nice(1)
.SH "ASSEMBLER (PDP-11)"
(nice = 34.)
.br
(priority in r0)
.br
.B sys nice
Commit	Line	Data
e6817382 BJ	1	.TH NICE 2
	2	.SH NAME
	3	nice \- set program priority
	4	.SH SYNOPSIS
	5	.B nice(incr)
	6	.SH DESCRIPTION
	7	The scheduling
	8	priority of the process is augmented by
	9	.IR incr .
	10	Positive priorities get less
	11	service than normal.
	12	Priority 10 is recommended to users
	13	who wish to execute long-running programs
	14	without flak from the administration.
	15	.PP
	16	Negative increments are ignored except on behalf of
	17	the super-user.
	18	The priority is limited to the range
	19	\-20 (most urgent) to 20 (least).
	20	.PP
	21	The priority of a process is
	22	passed to a child process by
	23	.IR fork (2).
	24	For a privileged process to return to normal priority
	25	from an unknown state,
	26	.I nice
	27	should be called successively with arguments
	28	\-40 (goes to priority \-20 because of truncation),
	29	20 (to get to 0),
	30	then 0 (to maintain compatibility with previous versions
	31	of this call).
	32	.SH "SEE ALSO"
	33	nice(1)
	34	.SH "ASSEMBLER (PDP-11)"
	35	(nice = 34.)
	36	.br
	37	(priority in r0)
	38	.br
	39	.B sys nice