[rrd-users] RRds::graph

[Smita]

Hi,
 I have an RRD like this:

 RRDs::create ($rrd, "--start", $start,
                 "DS:avgrtt:GAUGE:900:U:U",
                 "DS:variance:GAUGE:900:U:U",
                 "DS:pktloss:GAUGE:900:U:U",
                 "RRA:AVERAGE:0.5:1:24",
                 "RRA:AVERAGE:0.05:4:24",
                 "RRA:AVERAGE:0.05:48:14",
                 "RRA:AVERAGE:0.05:96:366");

 I am generating a graph using RRDs:: graph as follows:

 RRDs::graph "$rrddir/pktloss.gif", "--end", "$time", "--start",
"$start", "--end             "--title", "Average Pkt Loss between $from
and $to",
            "-v", "PACKET LOSS (%)", "-w", "600", "-h", "150",
            "--alt-autoscale", "--alt-autoscale-max",
            "--color", "BACK#000000", "--color", "GRID#888888",
            "--color", "MGRID#BBBBBB", "--color", "FONT#FFFFFF",
            "--color", "CANVAS#000000",
            "DEF:loss=$rrd:pktloss:AVERAGE",
            "LINE2:loss#0000FF",
            "GPRINT:loss:AVERAGE:Packet Loss Percentage";


I am updating the DSs so that interval between two data points doesn't
exceed the heartbeat period (i.e. 900 in this case). But I am getting a
blank graph with y-axis ranging from 0 to 1.0
I have no clue why this is happening. Any ideas on why this may happen
would be greatly appreciated?
Thanks
Smita

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