Hi Bronto:

I am not sure if i get it right if you are specifying something else than creating a data source (DS) using "RRDTool::OO". If not then my bad but If that is creating a COMPUTE DS then its pretty straight forward . COMPUTE data source is nothing but data source type ABSOLUTE. This is the same way i create a GAUGE data source using RRDTool::OO

#! /usr/bin/perl -w
#simple test ABSOLUTE DS
use strict;
use RRDTool::OO;

# creating new rrd object file 
  my $rrd = RRDTool::OO->new(
      file => "testrrd.rrd" );

# Create a round-robin database
    $rrd->create(
         step        => 1,  # one-second intervals
         data_source => { name      => "mynewDS",
                          type      => "ABSOLUTE" },
         archive     => { rows      => 5 });
[download]

This would create a new rrd data file testrrd.rrd with DS the specified DS type.

Hi

What do you exactly mean when you say that a COMPUTE and an ABSOLUTE are the same thing? From the rrdcreate man page I'd say they aren't:

Read more... (1080 Bytes)

I am new to both rrdtool and RRDTool::OO, so if I am missing something obvious please bear with me and tell me ;)

Ciao!
--bronto

---

In theory, there is no difference between theory and practice. In practice, there is.

First, you need to create an RRDTool::OO object in dry run mode. Then you prepare all the "standard" data sources in the usual way, and call create. It won't actually execute the call, but now you can retrieve a reference to the function that it would have called, along with a reference to the function arguments. You can now fiddle with the arguments and call the function when you are ready.