GETLOADAVG(3) Linux Programmer s Manual GETLOADAVG(3)

NAME getloadavg - get system load averages

SYNOPSIS #define _BSD_SOURCE #include <stdlib.h>

int getloadavg(double loadavg[], int nelem);

DESCRIPTION The getloadavg() function returns the number of processes in the system run queue 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.

RETURN VALUE If the load average was unobtainable, -1 is returned; otherwise, the number of samples actually retrieved is returned.

VERSIONS This function is available in glibc since version 2.2.

CONFORMING TO Not in POSIX.1-2001. Present on the BSDs and Solaris.

SEE ALSO uptime(1), proc(5), feature_test_macros(7)

COLOPHON This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at

Linux 2007-12-08 GETLOADAVG(3)