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Command: kvm_getloadavg | Section: 3 | Source: NetBSD | File: kvm_getloadavg.3
KVM_GETLOADAVG(3) FreeBSD Library Functions Manual KVM_GETLOADAVG(3)
NAME
kvm_getloadavg - get system load averages, from live or dead kernels
LIBRARY
Kernel Data Access Library (libkvm, -lkvm)
SYNOPSIS
#include <sys/resource.h>
#include <kvm.h>
int
kvm_getloadavg(kvm_t *kd, double loadavg[], int nelem);
DESCRIPTION
The kvm_getloadavg() function returns the number of processes in the
system run queue of the kernel or core file, indicated by kd. Up to
nelem samples are retrieved and assigned to successive elements of
loadavg[]. The system imposes a maximum of 3 samples, representing
averages over the last 1, 5, and 15 minutes, respectively. On a live
system, the load average is obtained by calling getloadavg(3). If
performing post mortem on a kernel core file, kvm_getloadavg is able to
extract the system load averages at the time of death from the core file
directly.
RETURN VALUES
If the load average was unobtainable, -1 is returned; otherwise, the
number of samples actually retrieved is returned.
SEE ALSO
uptime(1), getloadavg(3), kvm(3), kvm_open(3), sysctl(3)
FreeBSD 14.1-RELEASE-p8 December 11, 2018 FreeBSD 14.1-RELEASE-p8