[rrd-users] Re: Need help in RRDtool usage...

[Kalpesh Patel]

Yap I did indeed find them in the doc directory of the package after
spending some time...unfortunately I was expecting to get basic knowledge in
the tutorial by Alex at
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tutorial/rrdtutorial.html
.

This was my faux paus as I did not spend enough time to look for the
information.

Although I do have few other questions. Given following options to the
RRDs::create:

@options = ("-b", $start, "-s", $step,
            "DS:rows:GAUGE:$heartbeats:0:U",
            "RRA:AVERAGE:0.999:1:$runs");

What is the relationship between $start and $step if I want to start
collecting the data at a $step when it created for the first time?

I would also assume that the tool extrapolates the data for which data
inserted do not perfectly align the time specified in the step when the
database is created. Is there anyway to prevent the tool from extrapolating
the data and take the value that was fed?

I also assume that when running the dump function of the RRDtool, the
database shows NaN entries for time prior to creation time.

Kalpesh...

 -----Original Message-----
From: 	James Schnack [mailto:acrux14 at hotmail.com]
Sent:	Sunday, June 02, 2002 7:46 PM
To:	alex at ergens.op.HET.NET; kpatel at dli.com
Cc:	rrd-users at list.ee.ethz.ch
Subject:	Re: [rrd-users] Re: Need help in RRDtool usage...

>
> > In particular I am interested in understanding what the additional
>fields
> > entail (such as 200:U:U, and AVERAGE:0.5:1 in above) when creating the
>RRA.
> > I was unable to find any information from the examples in the package or
>the
> > tutorial on the web site.
>
>I'm sure this is covered.  If not in the docs then on faq.mrtg.org

It is covered, in the manual. See the rrd create man page:
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/manual/rrdcreate.html
This would be what Kalpesh has been looking for.
Regards,
J.

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