> > > rrdtool create test.rrd > > > DS:myvalues:COUNTER:600:U:U > > > RRA:AVERAGE:0.5:1:27360 ## 95 days > > > * RRA:AVERAGE:0.5:6:336 ## 7 days > > > * RRA:AVERAGE:0.5:24:372 ## 31 days > > > RRA:AVERAGE:0.5:288:365 ## 365 days > > > * RRA:MIN:0.5:1:27360 ## 95 days > > > RRA:MIN:0.5:6:336 ## 7 days > > > RRA:MIN:0.5:24:372 ## 31 days > > > RRA:MIN:0.5:288:365 ## 365 days > > > * RRA:MAX:0.5:1:27360 ## 95 days > > > RRA:MAX:0.5:6:336 ## 7 days > > > RRA:MAX:0.5:24:372 ## 31 days > > > RRA:MAX:0.5:288:365 ## 365 days
> Yes, I agree and disagree with you, but maybe I'm missing something. I > think the the last two entries for 95 days are redundant, because it's > only 1 sample being taken meaning the MIN. MAX and AVERAGE will be the > same. Or am I looking at it in the wrong way ? In these RRA's: > > > RRA:AVERAGE:0.5:1:27360 ## 95 days > > > * RRA:MIN:0.5:1:27360 ## 95 days > > > * RRA:MAX:0.5:1:27360 ## 95 days MIN, MAX and AVERAGE are always the same, except perhaps, when you update more then once within a step interval. All the other RRA's have multiple pdp's per cdp, so they consolidate multiple values. Take these RRA's: > > > RRA:AVERAGE:0.5:6:336 ## 7 days > > > RRA:MIN:0.5:6:336 ## 7 days > > > RRA:MAX:0.5:6:336 ## 7 days If you updated your RRA just once every step value and you updated the rrd db with the values 1,2,3,4,5,6 the result will be: MIN=1 AVERAGE=3.5 MAX=6. So here MIN and MAX are not quite redundant. So why define a RRA with one pdp per cdp? Well you may want to update more than once per step interval and I think you need them to be able to graph them in a high resolution. Serge. p.s I did not study the source code, so some of my assumptions also may be erroneous. ------------- Op de inhoud van dit e-mailbericht en de daaraan gehechte bijlagen is de inhoud van de volgende disclaimer van toepassing: http://www.zeelandnet.nl/disclaimer.php -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
