Sys::Statistics::LinuxUsermContributed PSys::Statistics::Linux::Compilation(3)NAMESys::Statistics::Linux::Compilation - Statistics compilation.
SYNOPSIS
use Sys::Statistics::Linux;
my $lxs = Sys::Statistics::Linux->new( loadavg => 1 );
my $stat = $lxs->get;
foreach my $key ($stat->loadavg) {
print $key, " ", $stat->loadavg($key), "\n";
}
# or
use Sys::Statistics::Linux::LoadAVG;
use Sys::Statistics::Linux::Compilation;
my $lxs = Sys::Statistics::Linux::LoadAVG->new();
my $load = $lxs->get;
my $stat = Sys::Statistics::Linux::Compilation->new({ loadavg => $load });
foreach my $key ($stat->loadavg) {
print $key, " ", $stat->loadavg($key), "\n";
}
# or
foreach my $key ($stat->loadavg) {
print $key, " ", $stat->loadavg->{$key}, "\n";
}
DESCRIPTION
This module provides different methods to access and filter the
statistics compilation.
METHODSnew()
Create a new "Sys::Statistics::Linux::Compilation" object. This creator
is only useful if you don't call "get()" of "Sys::Statistics::Linux".
You can create a new object with:
my $lxs = Sys::Statistics::Linux::LoadAVG->new();
my $load = $lxs->get;
my $stat = Sys::Statistics::Linux::Compilation->new({ loadavg => $load });
Statistic methods
sysinfo()cpustats()procstats()memstats()pgswstats()netstats()netinfo()
"netinfo()" provides raw data - no deltas.
sockstats()diskstats()diskusage()loadavg()filestats()processes()
All methods returns the statistics as a hash reference in scalar
context. In list all methods returns the first level keys of the
statistics. Example:
my $net = $stat->netstats; # netstats as a hash reference
my @dev = $stat->netstats; # the devices eth0, eth1, ...
my $eth0 = $stat->netstats('eth0'); # eth0 statistics as a hash reference
my @keys = $stat->netstats('eth0'); # the statistic keys
my @vals = $stat->netstats('eth0', @keys); # the values for the passed device and @keys
my $val = $stat->netstats('eth0', $key); # the value for the passed device and key
Sorted ...
my @dev = sort $stat->netstats;
my @keys = sort $stat->netstats('eth0');
pstop()
This method is looking for top processes and returns a sorted list of
PIDs as an array or array reference depending on the context. It
expected two values: a key name and the number of top processes to
return.
As example you want to get the top 5 processes with the highest cpu
usage:
my @top5 = $stat->pstop( ttime => 5 );
# or as a reference
my $top5 = $stat->pstop( ttime => 5 );
If you want to get all processes:
my @top_all = $stat->pstop( ttime => $FALSE );
# or just
my @top_all = $stat->pstop( 'ttime' );
search(), psfind()
Both methods provides a simple scan engine to find special statistics.
Both methods except a filter as a hash reference. It's possible to pass
the statistics as second argument if the data is not stored in the
object.
The method "search()" scans for statistics and rebuilds the hash tree
until that keys that matched your filter and returns the hits as a hash
reference.
my $hits = $stat->search({
processes => {
cmd => qr/\[su\]/,
owner => qr/root/
},
cpustats => {
idle => 'lt:10',
iowait => 'gt:10'
},
diskusage => {
'/dev/sda1' => {
usageper => 'gt:80'
}
}
});
This would return the following matches:
* processes with the command "[su]"
* processes with the owner "root"
* all cpu where "idle" is less than 50
* all cpu where "iowait" is grather than 10
* only disk '/dev/sda1' if "usageper" is grather than 80
The method "psfind()" scans for processes only and returns a array
reference with all process IDs that matched the filter. Example:
my $pids = $stat->psfind({ cmd => qr/init/, owner => 'eq:apache' });
This would return the following process ids:
* processes that matched the command "init"
* processes with the owner "apache"
There are different match operators available:
gt - grather than
lt - less than
eq - is equal
ne - is not equal
Notation examples:
gt:50
lt:50
eq:50
ne:50
Both argumnents have to be set as a hash reference.
Note: the operators < > = ! are not available any more. It's possible
that in further releases could be different changes for "search()" and
"psfind()". So please take a look to the documentation if you use it.
EXPORTS
No exports.
TODOS
* Are there any wishs from your side? Send me a mail!
REPORTING BUGS
Please report all bugs to <jschulz.cpan(at)bloonix.de>.
AUTHOR
Jonny Schulz <jschulz.cpan(at)bloonix.de>.
Thanks to Moritz Lenz for his suggestion for the name of this module.
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.
perl v5.14.12011-0Sys::Statistics::Linux::Compilation(3)
