opendarwin man page for getloadavg

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

NAME
       getloadavg - get system load averages

SYNOPSIS
       #include <stdlib.h>

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

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       getloadavg():
	   Since glibc 2.19:
	       _DEFAULT_SOURCE
	   In glibc up to and including 2.19:
	       _BSD_SOURCE

DESCRIPTION
       The  getloadavg() function returns the number of processes in the system run queue averaged over various periods of time.  Up to nelem sam-
       ples 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.

ATTRIBUTES
       For an explanation of the terms used in this section, see attributes(7).

       +-------------+---------------+---------+
       |Interface    | Attribute     | Value   |
       +-------------+---------------+---------+
       |getloadavg() | Thread safety | MT-Safe |
       +-------------+---------------+---------+
CONFORMING TO
       Not in POSIX.1.	Present on the BSDs and Solaris.

SEE ALSO
       uptime(1), proc(5)

COLOPHON
       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2016-03-15							     GETLOADAVG(3)