mirror of https://github.com/mkerrisk/man-pages
96 lines
3.2 KiB
Groff
96 lines
3.2 KiB
Groff
.\" Copyright (c) 1989, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" %%%LICENSE_START(BSD_3_CLAUSE_UCB)
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\" %%%LICENSE_END
|
|
.\"
|
|
.\" @(#)getloadavg.3 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.\" 2007-12-08, mtk, Converted from mdoc to man macros
|
|
.\"
|
|
.TH GETLOADAVG 3 2016-03-15 "Linux" "Linux Programmer's Manual"
|
|
.SH NAME
|
|
getloadavg \- get system load averages
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.B #include <stdlib.h>
|
|
.sp
|
|
.BI "int getloadavg(double " loadavg[] ", int " nelem );
|
|
.fi
|
|
.sp
|
|
.in -4n
|
|
Feature Test Macro Requirements for glibc (see
|
|
.BR feature_test_macros (7)):
|
|
.in
|
|
.sp
|
|
.BR getloadavg ():
|
|
.nf
|
|
Since glibc 2.19:
|
|
_DEFAULT_SOURCE
|
|
In glibc up to and including 2.19:
|
|
_BSD_SOURCE
|
|
.fi
|
|
.SH DESCRIPTION
|
|
The
|
|
.BR getloadavg ()
|
|
function returns the number of processes in the system run queue
|
|
averaged over various periods of time.
|
|
Up to
|
|
.I nelem
|
|
samples are retrieved and assigned to successive elements of
|
|
.IR loadavg [].
|
|
The system imposes a maximum of 3 samples, representing averages
|
|
over the last 1, 5, and 15 minutes, respectively.
|
|
.SH RETURN VALUE
|
|
If the load average was unobtainable, \-1 is returned; otherwise,
|
|
the number of samples actually retrieved is returned.
|
|
.\" .SH HISTORY
|
|
.\" The
|
|
.\" BR getloadavg ()
|
|
.\" function appeared in
|
|
.\" 4.3BSD Reno .
|
|
.SH VERSIONS
|
|
This function is available in glibc since version 2.2.
|
|
.SH ATTRIBUTES
|
|
For an explanation of the terms used in this section, see
|
|
.BR attributes (7).
|
|
.TS
|
|
allbox;
|
|
lb lb lb
|
|
l l l.
|
|
Interface Attribute Value
|
|
T{
|
|
.BR getloadavg ()
|
|
T} Thread safety MT-Safe
|
|
.TE
|
|
.SH CONFORMING TO
|
|
Not in POSIX.1.
|
|
Present on the BSDs and Solaris.
|
|
.\" mdoc seems to have a bug - there must be no newline here
|
|
.SH SEE ALSO
|
|
.BR uptime (1),
|
|
.BR proc (5)
|