NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | VERSIONS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON 

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

NAME         top

       getloadavg - get system load averages

SYNOPSIS         top

       #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         top

       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         top

       If the load average was unobtainable, -1 is returned; otherwise, the
       number of samples actually retrieved is returned.

VERSIONS         top

       This function is available in glibc since version 2.2.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────┬───────────────┬─────────┐
       │Interface    │ Attribute     │ Value   │
       ├─────────────┼───────────────┼─────────┤
       │getloadavg() │ Thread safety │ MT-Safe │
       └─────────────┴───────────────┴─────────┘

CONFORMING TO         top

       Not in POSIX.1.  Present on the BSDs and Solaris.

SEE ALSO         top

       uptime(1), proc(5)

COLOPHON         top

       This page is part of release 4.12 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)