[rrd-users] Re: Predicting based on averages?

[Tobias Oetiker]

Today Michael Wells wrote:


 | rrdtool graph totaltraffic_month.png -v "Bytes/sec" --start -2419200 --title
 | "Combined network traffic, 28 days" \
 |                 DEF:rl0in=rl0.rrd:input:AVERAGE \
 |                 DEF:rl0out=rl0.rrd:output:AVERAGE \
 |                 AREA:rl0in#00CC00:"Total inbound traffic" \
 |                 LINE2:rl0out#CC0000:"Total outbound traffic" \
 |                 CDEF:combined=totalout,totalin,+ \
 |                 CDEF:moncm=combined,2419200,* \
 |                 CDEF:monin=totalin,2419200,* \
 |                 CDEF:monout=totalout,2419200,* \
 |                 "COMMENT:\\n" \
 |                 "COMMENT:\\n" \
 |                 "GPRINT:monin:AVERAGE:Estimated 28 day throughput %8.2lf %s
 | inbound\\n" \
 |                 "GPRINT:monout:AVERAGE:Estimated 28 day throughput %8.2lf %s
 | outbound\\n" \
 |                 "GPRINT:moncm:AVERAGE:Estimated 28 day throughput %8.2lf %s
 | combined\\n" \
 | 	> /dev/null

three cheers ... finally someone who makes good use of the rrdtool
'we always store rates' and does not ask for the 'total'

tobi

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