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Linux 2.6 - man page for getloadavg (linux section 3)

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

NAME
       getloadavg - get system load averages

SYNOPSIS
       #define _BSD_SOURCE	   /* See feature_test_macros(7) */
       #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  succes-
       sive elements of loadavg[].  The system imposes a maximum of 3 samples, representing aver-
       ages 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)

COLOPHON
       This  page  is  part of release 3.55 of the Linux man-pages project.  A description of the
       project,    and	  information	 about	  reporting    bugs,	can    be    found     at
       http://www.kernel.org/doc/man-pages/.

Linux					    2007-12-08				    GETLOADAVG(3)
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