[rrd-users] trying to understand the tutorial

[Mario Ohnewald]

Hello!
I want to monitor the traffic of my router and i stared of with the
example from the tutorial, but i dont understand everything about it
yet.

This is my script (see below) wich runs every 5 mins. 

Created with:
rrdtool create myrouter.rrd         \
            DS:input:COUNTER:600:U:U   \
            DS:output:COUNTER:600:U:U  \
            RRA:AVERAGE:0.5:1:600      \
            RRA:AVERAGE:0.5:6:700      \
            RRA:AVERAGE:0.5:24:775     \
            RRA:AVERAGE:0.5:288:797    \
            RRA:MAX:0.5:1:600          \
            RRA:MAX:0.5:6:700          \
            RRA:MAX:0.5:24:775         \
            RRA:MAX:0.5:288:797

what woudl i have to change if i would want to run the script every
10seconds?

RRA:MAX:0.5:1:600
What does 0.5 stand for?
what does 1 stand for? What does 600 stand for? = 600 Samples in 1
minute?

I have read the tutorial a few time, but it seems i never understood
that!





#!/bin/sh
i=1
in=10
out=20

while [ $i > 1500 ]; do

in=$[$in+25]	# make something up
out=$[$out+13]	# make something up

rrdtool update myrouter.rrd N:$in:$out

rrdtool graph /usr/local/httpd/htdocs/spiekey/myrouter-day.gif --start
-86400 \
            DEF:inoctets=myrouter.rrd:input:AVERAGE \
            DEF:outoctets=myrouter.rrd:output:AVERAGE \
            AREA:inoctets#00FF00:"In traffic" \
            LINE1:outoctets#0000FF:"Out traffic"

sleep 300
done


Thank you very much!

Mario Ohnewald

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