[rrd-users] Re: Fetching data from RRA's

[W. James Showalter, Jr.]

That worked!!  It appears that I need to specify the time period.  As
Tobi said in an earlier message it keys on time first, resolution
second.  Since I was never specifying time and there was only one 24 hour
period, it used the 24 hour period (default) instead and ignored the
resolution. I guess the resolution is used to break ties when the time
periods for RRA's are the same and ignored otherwise - just a hunch
though.

Thanks!
Jim


On Mon, 16 Aug 1999, Alex van den Bogaerdt wrote:

> >  
> > Now, I assume that if I want to fetch the contents of the second RRA, I type:
> > 
> > rrdtool fetch test.rrd AVERAGE -r 7200
> > 
> > Since every data point is based on 7200 seconds (2 hours) worth of data.
> > However, I keep getting the data for the 24 hour RRA. Am I
> > misunderstanding something?  I did a dump and the data is definitely
> > there.
> >   
> 
> Seems fine to me. Either I'm having the same problem in parsing the docs,
> or you've found an undocumented feature.
> 
> Have you tried to fetch more than one day of data (--start end-2d) ?
> 
> Regards,
> Alex
> 

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