Hi!Buonasera!
Creating a file.rrd using:
rrdtool create file.rrd --step 5
DS:input:COUNTER:600:U:U \
DS:output:COUNTER:600:U:U \
RRA:AVERAGE:0.5:1:720 \
RRA:AVERAGE:0.5:5:864 \
RRA:AVERAGE:0.5:24:900 \
RRA:MAX:0.5:1:720 \
RRA:MAX:0.5:5:700 \
RRA:MAX:0.5:24:900 \
and creating .gif files using:
rrdtool graph fileaverage.gif --start $t0 --end $tf\
....
DEF:...=file.rrd:...:AVERAGE \
DEF:...=file.rrd:...:AVERAGE \
.....
rrdtool graph filemax.gif --start $t0 --end $tf\
....
DEF:...=file.rrd:...:MAX\
DEF:...=file.rrd:...:MAX \
.....
I'm not sure what I really see on the graph, I mean that if I compare the two
graphs I'm not sure the first one is retrieved by averaging values in the
second one.
Another problem is this one:
I'd like to know if I misunderstood the maening of RRAs:
I think the average is made over "1" sample every period of 5 seconds for the
last hour,every 25 seconds for the last 5 hour every 2 minutes for the last
day.
I think the max value concerns 1 sample every 5 seconds for the last hour,every
25 seconds for the last 5 hour and so on.
Help me understanding where is my mistake.
Regards
Vito Annecca
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