kvm_getloadavg(3) - NetBSD Manual Pages

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KVM_GETLOADAVG(3)       NetBSD 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 sys- tem 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 num- ber of samples actually retrieved is returned.
SEE ALSO
uptime(1), getloadavg(3), kvm(3), kvm_open(3), sysctl(3) NetBSD 9.99 December 11, 2018 NetBSD 9.99
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