[rrd-users] Calculation of average

[rp2]

I have the  created the following rrd and on filling in value I get the
following output which I cant explain. Basically I was trying to test what
happens if I send data faster than the step size. 

$> rrdtool create test.rrd --start 920804400 --step 5
DS:speed:COUNTER:600:U:U RRA:AVERAGE:0.5:1:24 
$> rrdtool update test.rrd 920804401:10 920804402:10 920804403:10
920804404:10 920804405:10 
$> rrdtool update test.rrd 920804406:10 920804407:10 920804408:10
920804409:10 920804410:10 
$> rrdtool update test.rrd 920804411:10 920804412:10 920804413:10
920804414:10 920804415:50 
$> rrdtool update test.rrd 920804416:20 920804417:20 920804418:20
920804419:20 920804420:50 


$> rrdtool fetch test.rrd AVERAGE --start 920804400 --end 920804500 speed 

 920804405: 0.0000000000e+00 
 920804410: 0.0000000000e+00 
 920804415: 8.0000000000e+00 
 920804420: 8.5899345920e+08 
 920804425: -nan 
 920804430: -nan 
 920804435: -nan 
 920804440: -nan 
... 

I dont understand how the value 8.5899345920e+08 is calculated. Could some
please explain? 

RP2 
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