[rrd-users] importing large dataset

[Mag Gam]

Alex,

Thanks for getting back to me.

These are actually rates. It is a CPU utilization rate. These values are
point in time. So, at 2/3/03 11:00      CPU utilization is at 10%
Does that help for clarification?



On Sat, Apr 26, 2008 at 9:57 AM, Alex van den Bogaerdt <
alex at ergens.op.het.net> wrote:

> On Sat, Apr 26, 2008 at 09:30:03AM -0400, Mag Gam wrote:
> > I would like to import a very large dataset lets say 100MB text file.
> The
> > file consists like this.
> >
> > Date                  Value
> > 2/3/03 11:00       10
> > 2/3/03 11:01       12
> > 2/3/03 11:02       13
> > 2/3/03 11:03       30
> > 2/3/03 11:04       12
> > 2/3/03 11:05       13
> >
> > It keeps going on. I can generate the epoch on the left side. However, I
> am
> > unclear how to load this into rrdtool. I have followed the tutorial and
> I
> > was not able to model my data properly. Can someone please show me an
> > example for the data above?
>
> What do these numbers mean?
> When were they valid?
>
>
> RRDtool is not a graphing program. Use e.g. gnuplot for that.
>
> If these numbers are rates, you still need to know when these rates
> were valid.  For instance: "12", does this mean a rate between
> "2/3/03 11:00" and "2/3/03 11:01" or between
> "2/3/03 11:01" and "2/3/03 11:02"?  A small but significant difference.
> RRDtool uses end times (thus: updating for 2/3/03 11:01 is updating the
> interval upto and including 2/3/03 11:01).
>
> Are these times in some local time or in UTC?  If they are in local time,
> make sure to compensate for this and don't forget about daylight saving
> (if any).
>
> You will need to convert each pair into <timestamp>:<value>, and then
> give those as input to rrdtool.  This is a *very* basic operation, so
> perhaps you need to explain the problem you encounter a bit more.
>
> --
> Alex van den Bogaerdt
> http://www.vandenbogaerdt.nl/rrdtool/
>
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