gen/FreeBSD/nice.3

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  32 .\"     @(#)nice.3      8.1 (Berkeley) 6/4/93
  33 .\" $FreeBSD: src/lib/libc/gen/nice.3,v 1.11 2001/10/01 16:08:51 ru Exp $
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  35 .Dd June 4, 1993
  36 .Dt NICE 3
  37 .Os
  38 .Sh NAME
  39 .Nm nice
  40 .Nd set program scheduling priority
  41 .Sh LIBRARY
  42 .Lb libc
  43 .Sh SYNOPSIS
  44 .In unistd.h
  45 .Ft int
  46 .Fn nice "int incr"
  47 .Sh DESCRIPTION
  48 .Bf -symbolic
  49 This interface is obsoleted by
  50 .Xr setpriority 2 .
  51 .Ef
  52 .Pp
  53 The
  54 .Fn nice
  55 function obtains the scheduling priority of the process
  56 from the system and sets it to the priority value specified in
  57 .Fa incr .
  58 The priority is a value in the range -20 to 20.
  59 The default priority is 0; lower priorities cause more favorable scheduling.
  60 Only the super-user may lower priorities.
  61 .Pp
  62 Children inherit the priority of their parent processes via
  63 .Xr fork 2 .
  64 .Sh SEE ALSO
  65 .Xr nice 1 ,
  66 .Xr fork 2 ,
  67 .Xr setpriority 2 ,
  68 .Xr renice 8
  69 .Sh HISTORY
  70 A
  71 .Fn nice
  72 syscall appeared in
  73 .At v6 .