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Hello.

I'm graphing roundtrip times and packet loss rates using rrdtool.
The graphs are creates using:

rrdtool graph  /tmp/rtt_and_loss.png -a PNG \
--width 600 --height 300 --start -1month \
DEF:rttmin=3Drtt_195.62.99.234.rrd:min:MIN \
DEF:rttavg=3Drtt_195.62.99.234.rrd:avg:AVERAGE \
DEF:rttmax=3Drtt_195.62.99.234.rrd:max:MAX \
DEF:loss=3Drtt_195.62.99.234.rrd:loss:AVERAGE \
CDEF:loss1=3Dloss,0,10,LIMIT,UN,UNKN,INF,IF \
CDEF:loss2=3Dloss,10,25,LIMIT,UN,UNKN,INF,IF \
CDEF:loss3=3Dloss,25,50,LIMIT,UN,UNKN,INF,IF \
CDEF:loss4=3Dloss,50,75,LIMIT,UN,UNKN,INF,IF \
CDEF:loss5=3Dloss,75,100,LIMIT,UN,UNKN,INF,IF \
COMMENT:"Packet Loss Percentage        ."  \
AREA:rttavg#00ff00:"Round-Trip Time in milliseconds\n"  \
STACK:loss1#6C9BCD:"0-10%"  \
GPRINT:rttmin:LAST:"                        Current\:%8.2lf %s\n"  \
STACK:loss2#FFFF00:"10-25%"  \
GPRINT:rttavg:AVERAGE:"                       Average\:%8.2lf %s\n"  \
STACK:loss3#FFCC66:"25-50%"  \
GPRINT:rttmax:MAX:"                       Maximum\:%8.2lf %s\n"  \
STACK:loss4#FF9900:"50-75%\n"  \
STACK:loss5#FF0000:"75-100%\n"

The result looks o.k, but sometimes the STACK goes below the
graph and right through the legend (shown in attached file
rtt_and_loss.png). The graph was produced using rrdtool 1.0.49

Does anyone experience similar problems or can point me
to a solution?

Many thanks in advance,

Andreas Maus.

--=20
Dipl.-Ing. Andreas Maus             science+computing ag
System Administration               Hagellocher Weg 71-75
mail: a.maus@science-computing.de   72070 Tuebingen, Germany
tel.: +49 7071 9457 456             www.science-computing.de


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