minix/lib/libc/gen/getloadavg.3
Lionel Sambuc f14fb60209 Libraries updates and cleanup
* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2013-01-14 11:36:26 +01:00

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.\" $NetBSD: getloadavg.3,v 1.15 2011/04/12 04:55:05 jruoho Exp $
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.\" @(#)getloadavg.3 8.1 (Berkeley) 6/4/93
.\"
.Dd April 12, 2011
.Dt GETLOADAVG 3
.Os
.Sh NAME
.Nm getloadavg
.Nd get system load averages
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdlib.h
.Ft int
.Fn getloadavg "double loadavg[]" "int nelem"
.Sh DESCRIPTION
The
.Fn getloadavg
function returns the number of processes in the system run queue
averaged over various periods of time.
Up to
.Fa nelem
samples are retrieved and assigned to successive elements of
.Fa loadavg Ns Bq .
The system imposes a maximum of 3 samples, representing averages
over the last 1, 5, and 15 minutes, respectively.
.Sh RETURN VALUES
If the load average was unobtainable, \-1 is returned; otherwise,
the number of samples actually retrieved is returned.
.Sh SEE ALSO
.Xr uptime 1 ,
.Xr kvm_getloadavg 3 ,
.Xr sysctl 3
.Sh HISTORY
The
.Fn getloadavg
function appeared in
.Bx 4.3 Reno .