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# NAME
Sys::CpuLoad - retrieve system load averages
# VERSION
version 0.29
# SYNOPSIS
```perl
use Sys::CpuLoad 'load';
print '1 min, 5 min, 15 min load average: ',
join(',', load()), "\n";
```
# DESCRIPTION
This module retrieves the 1 minute, 5 minute, and 15 minute load average
of a machine.
# EXPORTS
## load
This method returns the load average for 1 minute, 5 minutes and 15
minutes as an array.
On Linux, Solaris, FreeBSD, NetBSD and OpenBSD systems, it will make a
call to ["getloadavg"](#getloadavg).
If `/proc/loadavg` is available on non-Cygwin systems, it
will call ["proc\_loadavg"](#proc_loadavg).
Otherwise, it will attempt to parse the output of `uptime`.
On error, it will return an array of `undef` values.
As of v0.29, you can override the default function by changing
`$Sys::CpuLoad::LOAD`:
```perl
use Sys::CpuLoad 'load';
no warnings 'once';
$Sys::CpuLoad::LOAD = 'uptimr';
@load = load();
```
If you are writing code to work on multiple systems, you should use
the `load` function. But if your code is intended for specific systems,
then you should use the appropriate function.
## getloadavg
This is a wrapper around the system call to `getloadavg`.
If this call is unavailable, or it is fails, it will return `undef`.
Added in v0.22.
## proc\_loadavg
If `/proc/loadavg` is available, it will be used.
If the data cannot be parsed, it will return `undef`.
Added in v0.22.
## uptime
Parse the output of uptime.
If the [uptime](https://metacpan.org/pod/uptime) executable cannot be found, or the output cannot be
parsed, it will return `undef`.
Added in v0.22.
As of v0.24, you can override the executable path by setting
`$Sys::CpuLoad::UPTIME`, e.g.
```perl
use Sys::CpuLoad 'uptime';
no warnings 'once';
$Sys::CpuLoad::UPTIME = '/usr/bin/w';
@load = uptime();
```
# SEE ALSO
[Sys::CpuLoadX](https://metacpan.org/pod/Sys::CpuLoadX)
# SOURCE
The development version is on github at [https://github.com/robrwo/Sys-CpuLoad](https://github.com/robrwo/Sys-CpuLoad)
and may be cloned from [git://github.com/robrwo/Sys-CpuLoad.git](git://github.com/robrwo/Sys-CpuLoad.git)
# BUGS
Please report any bugs or feature requests on the bugtracker website
[https://github.com/robrwo/Sys-CpuLoad/issues](https://github.com/robrwo/Sys-CpuLoad/issues)
When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.
# AUTHORS
- Robert Rothenberg <rrwo@cpan.org>
- Clinton Wong <clintdw@cpan.org>
# CONTRIBUTORS
- Slaven Rezić <slaven@rezic.de>
- Victor Wagner
- Dmitry Dorofeev <dima@yasp.com>
- Vincent Lefèvre <vincent@vinc17.net>
# COPYRIGHT AND LICENSE
This software is copyright (c) 1999-2002, 2020 by Clinton Wong <clintdw@cpan.org>.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
|
