NAME

Sys::Statistics::Linux::PgSwStats - Collect linux paging and swapping statistics.

SYNOPSIS

    use Sys::Statistics::Linux::PgSwStats;

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

Or

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

DESCRIPTION

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

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

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 = Sys::Statistics::Linux::PgSwStats->new;

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

    my $lxs = Sys::Statistics::Linux::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.

     Sys::Statistics::Linux::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

No exports.

SEE ALSO

proc(5)

REPORTING BUGS

Please report all bugs to <jschulz.cpan(at)bloonix.de>.

AUTHOR

Jonny Schulz <jschulz.cpan(at)bloonix.de>.

COPYRIGHT

Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

cpanm Sys::Statistics::Linux

perl -MCPAN -e shell
install Sys::Statistics::Linux