[rrd-users] Re: Updating RRD file with GAUGE DST

[Alex van den Bogaerdt]

On Wed, Nov 12, 2003 at 03:23:41PM +0100, Pitisi wrote:

> I create a RRD file with the following command:

[condensed the email]
> 
> rrdtool create fic.rrd --start 1067264480 --step 10 \
>   DS:Metrique:GAUGE:20:U:U RRA:AVERAGE:0.5:1:360
> rrdtool update fic.rrd --template Metrique 1067264490:200
> rrdtool fetch fic.rrd AVERAGE --start 1067264480 --end 1067264520
>               Metrique
> 
> 1067264480: nan
> 1067264490: nan
> 1067264500: nan
> 1067264510: nan
> 1067264520: nan

Using a really old rrdtool (1.0.9) I get this:
                 Metrique

1067264480:           NaN
1067264490:        200.00
1067264500:           NaN
1067264510:           NaN
1067264520:           NaN

Using v1.0.39 I get this:
                 Metrique

1067264480: nan
1067264490: 2.0000000000e+02
1067264500: nan
1067264510: nan
1067264520: nan

In both cases it works as expected.

> If I delete fic.rrd and restart the same experience, but replace
> 1067264490:200 in the first update by 1067264480:200 (at the first entry
> in the RRD file), everythings works correctly:

So it seems that the implicit unknown entry from 1067264480-10 to 1067264480
influences the interval from 1067264480 to 1067264480+10.

Strange. What version?

-- 
http://www.googlism.com/index.htm?ism=alex+van+den+bogaerdt&type=1

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