[rrd-users] RRA and -r option in graph

[Ketan Patel]

a quick question -

i collect data every 5 mins (300 secs). rrd file has an average RRA with 0.5:6:48 (48 samples of half an hour each), 0.5:288:31 (31 samples of 1 day each). 

with this rra defined, is it possible to plot a graph showing values per hour of a day? i tried 300, 600, 900, 1800 as -r option in rrdfetch option, but everytime the output is for 24 hours. 

Do I need to change RRA of different specifications or should I use different -r value?

cheers

k2


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