[drraw-users] Why is granularity 30 minutes?

[Martin Schuster (IFKL IT OS DSM CD)]

Zembower, Kevin wrote:
> [...]
> #Average one reading every 5 minutes and store 24 hours
> [...]
> I update this RRD every 5 minutes. However, my highest granularity
> graph in drraw seems to aggregate the data into 30 minute averages
> (see the attached image).
> 
It looks like you are plotting over a timeframe of 30 hours --
as you are only keeping the 5min-data for 24 hours, rrdgraph has
to use the next available granularity.

Hint: Use biiig RRDs. 288 values is usually to small! (Unless you
are really concerned about disk usage :)
I usually go for the range 2000..20000 (in your case, 288 is one
day, so you could use 14*288=4032 to have the fine-grained resolution
for the last two weeks)

hth,
-- 
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