/ 
Linux-Info-1.3
River stage one • 2 direct dependents • 3 total dependents
/ Linux::Info::PgSwStats

NAME

Linux::Info::PgSwStats - Collect linux paging and swapping statistics.

SYNOPSIS

use Linux::Info::PgSwStats;

my $lxs = Linux::Info::PgSwStats->new;
$lxs->init;
sleep 1;
my $stat = $lxs->get;

Or

my $lxs = Linux::Info::PgSwStats->new(initfile => $file);
$lxs->init;
my $stat = $lxs->get;

DESCRIPTION

Linux::Info::PgSwStats gathers paging and swapping statistics from the virtual /proc filesystem (procfs).

For more information read the documentation of the front-end module Linux::Info.

PAGING AND SWAPPING STATISTICS

Generated by /proc/stat or /proc/vmstat.

pgpgin      -  Number of pages the system has paged in from disk per second.
pgpgout     -  Number of pages the system has paged out to disk per second.
pswpin      -  Number of pages the system has swapped in from disk per second.
pswpout     -  Number of pages the system has swapped out to disk per second.

The following statistics are only available by kernels from 2.6.

pgfault     -  Number of page faults the system has made per second (minor + major).
pgmajfault  -  Number of major faults per second the system required loading a memory page from disk.

METHODS

new()

Call new() to create a new object.

my $lxs = Linux::Info::PgSwStats->new;

Maybe you want to store/load the initial statistics to/from a file:

my $lxs = Linux::Info::PgSwStats->new(initfile => '/tmp/pgswstats.yml');

If you set initfile it's not necessary to call sleep before get().

It's also possible to set the path to the proc filesystem.

 Linux::Info::PgSwStats->new(
    files => {
        # This is the default
        path   => '/proc',
        stat   => 'stat',
        vmstat => 'vmstat',
    }
);

init()

Call init() to initialize the statistics.

$lxs->init;

get()

Call get() to get the statistics. get() returns the statistics as a hash reference.

my $stat = $lxs->get;

raw()

Get raw values.

EXPORTS

Nothing.

SEE ALSO

AUTHOR

Alceu Rodrigues de Freitas Junior, <arfreitas@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2015 of Alceu Rodrigues de Freitas Junior, <arfreitas@cpan.org>

This file is part of Linux Info project.

Linux-Info is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Linux-Info is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Linux Info. If not, see <http://www.gnu.org/licenses/>.