Re: How does cacti calculates AVG?

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=1331809200 \
--end=1331845200 \
--title="Oracle - sessions RAC" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
COMMENT:"From 2012/03/15 08\:00\:00 To 2012/03/15 18\:00\:00\c" \
COMMENT:"  \n" \
--vertical-label="" \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
DEF:a="/opt/collectd/var/lib/collectd/srv-rac01/oracle-OracleDatabase/gauge-Oracle-Sessions.rrd":value:AVERAGE
\
LINE2:a#FF0000FF:"Sessions\:"  \
GPRINT:a:LAST:"Current\:%8.0lf"  \
GPRINT:a:MAX:"Max\:%8.0lf"  \
GPRINT:a:AVERAGE:"Avg\:%8.0lf\n"


2012/3/15 Gandalf <[email protected]>

> There are two different ways of printing an AVG with cacti. Please provide
> the
> rrdtool graph statement used to clarify. Goto Graph Management and switch
> to
> DEBUG to see that statement
> Reinhard
>
> On 15.03.2012 20:25, Andre Luis wrote:
> > I am monitoring the number of sessions on a database.
> > now I am seeing On the graph on the period of 2012-03-14 00:00 to
> > 2012-03-15:00 ... and the avg on the graph is 200 sessions on this
> period...
> > but if I sum all the data stored on the rrd on the same period (using
> > rrdtool fetch), then divide by number of the datas, then I got something
> > about 100 sessions..
> >
> > anyone knows why is this happening?
> > so, how does cacti calculates the AVG?
> >
>
>
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