Thank you! with DERIVE it draws what I need
But there is one more problem with "Speed IN" and "Speed OUT" in comments
as you can see the Average speed is near 80kb/s
but Speed IN shows ~32000kb/s
graphics are drawing from the script with such command
rrdtool graphv graphic-daily_1.png \
-w500
-h100
-b 1024
--title Daily
--start -12h
--end $now
--imgformat PNG
--interlace
DEF:in=$rdb:IN:AVERAGE
DEF:out=$rdb:OUT:AVERAGE
DEF:in_ex=$rdb:IN_EX:AVERAGE
DEF:out_ex=$rdb:OUT_EX:AVERAGE
AREA:in#00DD00:in
LINE1:out#F15500:out
AREA:in_ex#FF0000:in_ex
LINE1:out_ex#0561FA:out_ex
GPRINT:in:LAST:Speed IN\\: \%6.2lf kbyte
GPRINT:out:LAST: OUT\\: \%6.2lf kbyte
I tried to insert "GPRINT:in:AVERAGE:Speed IN\\: \%6.2lf kbyte"
but "Speed IN" shows the same wrong speed, and I can not imagine where it
takes that number
http://rrd-mailinglists.937164.n2.nabble.com/file/n6398174/graphic-daily_1.png
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