getloadavg - get system load averages

NAME LIBRARY SYNOPSIS DESCRIPTION RETURN VALUE ATTRIBUTES STANDARDS HISTORY SEE ALSO

SYNOPSIS

#include <stdlib.h>

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

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

The getloadavg() function returns the number of processes in the system run queue averaged over various periods of time. Up to n 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.

ATTRIBUTES

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

STANDARDS

BSD.

HISTORY

4.3BSD-Reno, Solaris. glibc 2.2.