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CentOS 5.1 |
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getloadavg(3) |
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GETLOADAVG(3) BSD Library Functions 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.
DIAGNOSTICS
If the load average was unobtainable, −1 is returned; otherwise, the number of samples actually retrieved is returned.
SEE ALSO
uptime(1), proc(5)
HISTORY
The getloadavg() function appeared in 4.3BSD−Reno. This function is available in glibc since version 2.2.
CONFORMING TO
Not in POSIX.1-2001. Present on the BSDs and Solaris.
4.3BSD June 4, 1993 4.3BSD
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getloadavg(3) | |