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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 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. ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ¬ββββββββββββββββ¬ββββββββββ βInterface β Attribute β Value β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββΌββββββββββββββββΌββββββββββ€ βgetloadavg() β Thread safety β MT-Safe β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ΄ββββββββββββββββ΄ββββββββββ CONFORMING TO Not in POSIX.1. Present on the BSDs and Solaris. SEE ALSO uptime(1), proc(5) Linux 2021-03-22 GETLOADAVG(3)