[rrd-users] Re: Calculating traffic

[Iñaki Martínez]

Kaixo Alex van den Bogaerdt!!!

 Now i am more confused...... :-(

> >   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              \
> 
> What this means is:
> 
> Each PDP is worth 60 seconds (--step).
> 
> Updates cannot be further apart than 600 seconds (600 in DS).
> 
> If updates occur, say, every 300 seconds then with each update there
> will be 5 PDPs calculated.
> 
> The rate calculated for each of these PDPs is then checked against
> the minimum (U == unknown) and maximum (also U) values.  When the
> rate is allowed, it will be used to compute the value for a CDP.
> 
> CDP calculation:
> 0.5 times the amount of PDPs needed per CDP may be unknown.  The RRAs
> need 1,6,24 and 288 PDPs per CDP.  The RRA stores 600,700,775,3725 of
> these CDPs.
> 
> Total time per RRA:
> The total time per RRA is the time per PDP (your --step time) multiplied
> with the amount of PDPs per CDP (steps) multiplied by the amount of CDPs.
> The numbers are:
> 60*1*600 == 36000 seconds == 10 hours
> 60*6*700 == 252000 seconds == 70 hours = 2 days 22 hours
> 60*24*775 == 1116000 seconds == 12 days 22 hours
> 60*288*3725 == 64368000 seconds == 745 days

 What does this mean????

 i thought that with 3725 i will have a five years rrd file.....


 Well, another question......


 is the rrd file created well o wrong????
 can it be improved??? i mean getting values each minute....


 If the rrd file were about ram o processes... what to change????


 Thanks all of you for your answers!!!!!!



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