How can I use Perl and RRD to plot ping times?

Question

I'm trying to do my first rrd graph through Perl. I have tried RRD::Simple and rrds and just can't get either one to work.

Here's what I have so far:

use strict;
use RRD::Simple ();

# Create an interface object
my $rrd = RRD::Simple->new( file => "server.rrd" );

# Put some arbitary data values in the RRD file for the same
# 3 data sources called bytesIn, bytesOut and faultsPerSec.
 $rrd->create(
            EqSearch => "DERIVE",
            MfSearch => "DERIVE",
            EQCostBasis => "DERIVE",
            MFCostBasis => "DERIVE"
        );

$rrd->update(
            EqSearch => 2,
            MfSearch => 3,
            EQCostBasis => 10,
            MFCostBasis => 15
        );

# Generate graphs:
# /var/tmp/myfile-daily.png, /var/tmp/myfile-weekly.png
# /var/tmp/myfile-monthly.png, /var/tmp/myfile-annual.png
my %rtn = $rrd->graph(
            destination => "/Users/cmuench/Documents/Code/perl",
            title => "Server A",
            vertical_label => "",
            interlaced => "",
            periods => [qw(hour)]
        );

The output is:

Answer 1

From your above script, the main issue is that you don't have enough data to show in graphs. you can see the data in your rrd using 'rrdtool fetch`.

If you can use bash instead of perl. Look at this "Round Trip and Packet Loss stats with rrdtool"

If you still want to use perl module RRD::Simple, please look at the examples provided with this module i.e. RRD::Simple::Examples Or provide more details about the problem you are facing.