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1.\" Copyright (c) 1989, 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
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32.\" @(#)getloadavg.3 8.1 (Berkeley) 6/4/93
33.\" $FreeBSD: src/lib/libc/gen/getloadavg.3,v 1.8 2001/10/01 16:08:51 ru Exp $
34.\"
35.Dd June 4, 1993
36.Dt GETLOADAVG 3
37.Os
38.Sh NAME
39.Nm getloadavg
40.Nd get system load averages
41.Sh LIBRARY
42.Lb libc
43.Sh SYNOPSIS
44.In stdlib.h
45.Ft int
46.Fn getloadavg "double loadavg[]" "int nelem"
47.Sh DESCRIPTION
48The
49.Fn getloadavg
50function returns the number of processes in the system run queue
51averaged over various periods of time.
52Up to
53.Fa nelem
54samples are retrieved and assigned to successive elements of
55.Fa loadavg Ns Bq .
56The system imposes a maximum of 3 samples, representing averages
57over the last 1, 5, and 15 minutes, respectively.
58.Sh DIAGNOSTICS
59If the load average was unobtainable, \-1 is returned; otherwise,
60the number of samples actually retrieved is returned.
61.Sh SEE ALSO
62.Xr uptime 1 ,
63.Xr kvm_getloadavg 3 ,
64.Xr sysctl 3
65.Sh HISTORY
66The
67.Fn getloadavg
68function appeared in
69.Bx 4.3 Reno .