[mrtg] Help with memory stats

[Kelly]

Hello,

I´m using the script below, to get de memory stats, but my graphs are always
the same, a line.
Could anyone help?

This is my .cfg file
### Global Config Options

#  for Debian
WorkDir: /var/www/mrtg

#  or for NT
# WorkDir: c:\mrtgdata

### Global Defaults

#  to get bits instead of bytes and graphs growing to the right
 Options[_]: growright, bits
RunAsDaemon: yes

######################################################################
# System: debian
# Description: Linux debian 2.2.20-idepci #1 Sat Apr 20 12:45:19 EST 2002
i686
# Contact: Root <root at localhost> (configure /etc/snmp/snmp.local.conf)
# Location: Unknown (configure /etc/snmp/snmp.local.conf)
######################################################################



Target[mem]:'/var/www/mrtg/memory.pl'
Options[mem]:  growright,noinfo,gauge
Unscaled[mem]: ymwd
MaxBytes[mem]: 268435456
YLegend[mem]:Percentual
ShortLegend[mem]:%
Legend1[mem]:Uso de memoria do sistema
LegendI[mem]:Mem. Livre
LegendO[mem]:blah
Legend2[mem]:Mem Util
Title[mem]:Uso de Memoria
PageTop[mem]:<h1>Uso de Memoria</h1>
        <table>
                <tr><td>Sistema:</td><td>Sistema</td></tr>
                <tr><td>Responsavel:</td><td>admin</td></tr>
                <tr><td>Descricao:</td><td>Uso de Memoria</td></tr>
        </table>
############### End Memory

and this is the script:

#!/usr/bin/perl
# This small utility is used to collect the available memory and
# used memory. For free memory, it sums the free, cached and buffers.

# You must enable the "gauge" feature to have a proper graph
# as those numbers do not grow
#
# Colin Tinker
# g1gsw at titanic.demon.co.uk

# setup local vars

my($machine);

# Enter default macine name here

$machine = "g1gsw.ampr.org";

# This allows command args to override defaults listed above

if  (scalar(@ARGV) > 1 )
    {
    print("USAGE: memory.pl {machine}\n");
    exit(-1);
    }

    if  ($ARGV[0] ne '' && $ARGV[0] ne '#')
        {

        $machine = $ARGV[0];
        }

# Calculate free memory

    $getfree = `cat /proc/meminfo | grep Mem:`;
    $getfree =~ /^Mem:\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)/;

# Each (\D+) = $1 or $2 or $3 etc

    $outfree = $3;
    $outbuffers = $5;
    $outcached = $6;
# Total free memory

    $gettotal = $outfree+$outcached+$outbuffers;
    print $gettotal."\n";

# Get used memory free

    $getused = `cat /proc/meminfo | grep Swap:`;
    $outused = $1-$gettotal;
    print $outused."\n";

# Get uptime

    $getuptime = `/usr/bin/uptime`;

# Parse though getuptime and get data
    $getuptime =~ /^\s+(\d{1,2}:\d{2}..)\s+up\s+(\d+)\s+(\w+),/;

#Print getuptime data for mrtg

    print $2." ".$3."\n";

# Print machine name for mrtg

    print $machine."\n";

--------------------------
Kelly Cristine Göedert
RG Contadores Associados
(48)3025-6424 - ramal 219
www.rgcontadores.com.br
---------------------------

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