[rrd-users] rrdtool fetch ..

[Stephan Henningsen]

Hi.

I don't understand how the --resolution in rrdtool fetch
works.  I would think, that --resolution 60 --start -1hour
when sampling every 60 secs, would return two values: one
stored one hour ago, and one just now.

Anyway, that's what I want: Fetch the first (-1hour) and
last value from RRD, preferably just one RRA in the RRD if
possible.

This is how I created the RRD:

# Sample ever 60 secs.
# Must receive sample every 60 secs.
# Average of 1 sample past hour.
# Average of 60 samples past year.

rrdtool create $RRD --step 60           \
        DS:effekt:GAUGE:60:U:U          \
        DS:energi:GAUGE:60:U:U          \
        RRA:AVERAGE:0.5:1:60            \
        RRA:AVERAGE:0.5:60:8760

I hope someone can help me, thanks.

-- 
Stephan Henningsen  /
                   /  tisprut productions[tm]



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