NetBSD/lib/libkvm/kvm_getloadavg.3

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.\" $NetBSD: kvm_getloadavg.3,v 1.10 2003/08/07 16:44:36 agc Exp $
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.\"
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.\" @(#)kvm_getloadavg.3 8.1 (Berkeley) 6/4/93
.\"
.Dd August 18, 2002
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.Dt KVM_GETLOADAVG 3
.Os
.Sh NAME
.Nm kvm_getloadavg
.Nd get system load averages
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.Sh LIBRARY
.Lb libkvm
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.Sh SYNOPSIS
.In sys/resource.h
.In kvm.h
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.br
.Ft int
.Fn kvm_getloadavg "kvm_t *kd" "double loadavg[]" "int nelem"
.Sh DESCRIPTION
The
.Fn kvm_getloadavg
function returns the number of processes in the system run queue
of the kernel indicated by
.Fa kd ,
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
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If the load average was unobtainable, \-1 is returned; otherwise,
the number of samples actually retrieved is returned.
.Sh SEE ALSO
.Xr uptime 1 ,
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.Xr getloadavg 3 ,
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.Xr kvm 3 ,
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.Xr kvm_open 3 ,
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.Xr sysctl 3