Kaixo Alex van den Bogaerdt!!! First of all..... THANK YOU VERY MUCH for your help!!!!!
> > What does this mean???? > > What is it you don't understand? I specifically wrote how to do > this calculation. I thought i understand in some way how rrd file works, but i did not understand at all. > As a formula: > total_time = time_per_PDP * amount_of_PDPs_per_CDP * amount_of_CDPs OK..... a write down.... > > i thought that with 3725 i will have a five years rrd file..... > > There's *no* way I can come up with this number so explain. While > you're doing that maybe we can see where you go wrong. Taken from rrdtool tutorial...... 600 samples of 5 minutes (2 days and 2 hours) 700 samples of 30 minutes (2 days and 2 hours, plus 12.5 days) 775 samples of 2 hours (above + 50 days) 797 samples of 1 day (above + 732 days, rounded up to 797) With this formula: 2261 = 2 + 12 + 50 + 1 + (732 * 3) for three years > For 5 years worth of data: > > 5 years would be 5 * 365 days + two extra = 1827 days. (The two extra > days are for february 29th). > > 1827 days * 86400 seconds per day = 157852800 seconds. > The amount of steps in the last PDP is 288. > The amount of time per PDP is 60 > > So: > total_time = time_per_PDP * amount_of_PDPs_per_CDP * amount_of_CDPs > 157852800 = 60 * 288 * amount_of_CDPs > > 157852800 = 17280 * amount_of_CDPs > 157852800/17280 = amount_of_CDPs > amount_of_CDPs = 9135 To clear: time_per_PDP = --step value amount_of_PDPs_per_CDP = steps (RRA) amount_of_CDPs = rows (RRA) this are OK???? then from the above example (tutorial): 60 * 288 * 797 = 13772160 segs =~ 159 days but in the tutorial says 732 days I am confused....... Then..... must i change 3725 for 9135.... ????? must i change all??? Well, i have the following: rrdtool create port_xxx.rdd --step 60 \ DS:in:COUNTER:600:U:U \ DS:out:COUNTER:600:U:U \ RRA:AVERAGE:0.5:1:600 \ RRA:AVERAGE:0.5:6:700 \ RRA:AVERAGE:0.5:24:775 \ RRA:AVERAGE:0.5:288:3725 \ RRA:MAX:0.5:1:1:600 \ RRA:MAX:0.5:6:700 \ RRA:MAX:0.5:24:775 \ RRA:MAX:0.5:288:3725; what do you change to: 1) have a five years of data 2) make a graph of two hours and see smooth 3) make a graph of a year of 2,3,4 or 5 years ago Well i think that for now if enough!!!! THANK YOU for your help!!! -- 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
