---
name: "Sys::Statistics::Linux::PgSwStats"
section: "3pm"
platform: "linux"
package: "libsys-statistics-linux-perl"
version: "0.66-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Sys::Statistics::Linux::PgSwStats"
---

# Sys::Statistics::Linux::PgSwStats(3pm)

Collect linux paging and swapping statistics.

## 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)](/proc/5.md)**

## 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.