|| FreeBSD Library Functions Manual
get load average of the system
Kernel Data Access Library (libkvm, -lkvm)
#include < kvm.h>
kvm_getloadavg( kvm_t *kd, double loadavg, int nelem);
kvm_getloadavg() function returns the number of processes in the system run queue of the kernel indicated by
kd, averaged over various periods of time. 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.
DIAGNOSTICS If the load average was unobtainable, -1 is returned; otherwise, the number of samples actually retrieved is returned.