[rrd-users] interpretation of rrd creation

[Kenny Chan]

Hi folks,

I'm new to rrdtool. I'm having some problem interpreting the rrd 
creation code below. I read the tutorial from 
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tutorial/.  I cannot 
find explanation for xff . let's use following RRA as example

RRA:AVERAGE:0.3:288:1461

(RRA:CF:xff:step:rows)

what is 0.3 representing here?


I have problem understanding  the RRA part below, please correct me if 
I'm wrong.
-------------------------------------------
rrdtool create target.rrd
--start 1023654125
--step 10
DS:mem:GAUGE:300:0:671744
RRA:AVERAGE:0:1:288
RRA:AVERAGE:0.3:6:1440
RRA:AVERAGE:0.3:72:1460
RRA:AVERAGE:0.3:288:1461
---------------------------------------------

RRA:AVERAGE:0:1:288
my interpretation::
   the data will be saved every 10 seconds for 288 rows, which means the 
graph is saved for  (288*10) / (60sec/min) = 48 mins.

Am I correct?


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