[rrd-users] RRDTOOL Good with step 300, Bad with step 600

xajepa angles at hotmail.fr
Mon Mar 14 08:37:58 CET 2011

thanks, thanks, thanks

Date: Fri, 11 Mar 2011 13:38:39 -0800
From: ml-node+6162953-1078388733-324630 at n2.nabble.com
To: angles at hotmail.fr
Subject: Re: RRDTOOL Good with step 300, Bad with step 600

xajepa wrote: 

>If I chose a step 600 (not equal to 300), it is bad : 
>Bad Code : 
>rrdtool create  ${FICRRD}.rrd --step 600 --start 978303900 
>DS:b600:GAUGE:600:0:U \ 
>           RRA:AVERAGE:0:1:3 
>  rrdtool update  ${FICRRD}.rrd \ 
>           978304500:2 \ 
>           978305100:1 \ 
>           978305700:4 

978304500 is not an integer multiple of 600 - therefore your data it 
normalised into buckets that start/end on times that are. 

See "Rates, normalizing and consolidating" 

Simon Hobson 

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed 
author Gladys Hobson. Novels - poetry - short stories - ideal as 
Christmas stocking fillers. Some available as e-books. 

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