[rrd-users] Re: *shrugs*

Chris Knipe savage at savage.za.org
Mon Apr 21 19:40:51 MEST 2003

Thank you Paul,

I guess my topic is after all appropriate... *shrugs*

I'll give some of the latest Beta's a try... I did saw a few mentions of
VDEF, but was mostly unable to find anything concrete about it - I added to
over 4,000 unique hits to the RRD web site yesterday, so excuse me if I
can't recall the exact URL right now...

High ho, High ho, it's back to the drawing board I go??


----- Original Message -----
From: "Paul Smith" <paul at foundry0.com>
To: "Chris Knipe" <savage at savage.za.org>
Sent: Monday, April 21, 2003 3:58 PM
Subject: Re: [rrd-users] *shrugs*

> Chris Knipe wrote:
> >Paul,
> >
> >If I use GAUGE, then I cannot draw the normal graphs with it.  It can't
> >that difficult to do, and I cannot believe that in over a year that I've
> >been working on this, no one was able to provide me with a solution, or a
> >reason as to why this cannot be done...
> >
> >
> >
> >--
> >me
> >
> >
> >
> Chris,
>         Ah... now I understand. Wow, that IS a sticky one. With rrdtool,
> it's a lot easier to massage the numbers as they're going into the rrd
> than as they're coming out. You just don't have much control over what
> happens to the numbers at graph-time: if you can't do it with a CDEF,
> you're pretty much out of luck. You might want to take a look at RRDTool
> 1.1 Beta... there's a new CDEF-like concept called a VDEF which might be
> useful in doing what you're describing. Beyond that, the shortest route
> to what you're after is, of course, Perl. It wouldn't be hard for an
> experienced Perl (or Python, or shell) coder to write a script that will
> pull info from one rrd, monkey with the data, dynamically create a new
> temporary rrd, then get a graph from it. But even that's not very
> efficient... it would probably be too slow and resource-intensive to put
> on a live webpage.
> --
> Paul Smith
> Foundry Zero
> www.foundryzero.com
> (919) 805-9212

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