[rrd-users] memory graphs

[Leonardo dos Santos Goldim]

Hi guys,
i'm here again...
weel, i'm trying to build the memory graph, but some strange problems 
are happen...
here are the step i do:

first i create the rrd file:
RRDs::create($RRDPATH."/system/memory.rrd",
                         "--step=300",
                         "DS:used:COUNTER:200:0:U",
                         "DS:cached:COUNTER:200:0:U",
                         "DS:buffer:COUNTER:200:0:U",
                         "DS:shared:COUNTER:200:0:U",
                         "DS:free:COUNTER:200:0:U",
                         "RRA:AVERAGE:0.5:1:1440",
                         "RRA:AVERAGE:0.5:30:336",
                         "RRA:AVERAGE:0.5:60:744",
                         "RRA:AVERAGE:0.5:1440:365",
                         "RRA:MIN:0.5:1:1440",
                         "RRA:MIN:0.5:30:336",
                         "RRA:MIN:0.5:60:744",
                         "RRA:MIN:0.5:1440:365",
                         "RRA:MAX:0.5:1:1440",
                         "RRA:MAX:0.5:30:336",
                         "RRA:MAX:0.5:60:744",
                         "RRA:MAX:0.5:1440:365",
                         "RRA:LAST:0.5:1:1440",
                         "RRA:LAST:0.5:30:336",
                         "RRA:LAST:0.5:60:744",
                         "RRA:LAST:0.5:1440:365");

second, i update data:
$MEMDATA  = `free -m |grep Mem | tr -s ' '`;
($trash,$MEMSIZE,$MEMUSED,$MEMFREE,$MEMSHARED,$MEMBUFFER,$MEMCACHED) =
split("\ ",$MEMDATA);
RRDs::update ($RRDPATH."/system/memory.rrd",
"N:".$MEMUSED.":".$MEMCACHED.":".$MEMBUFFER.":".$MEMSHARED.":".$MEMFREE);
my $Err = RRDs::error;
die "Error while updating: $Err\n" if $Err;

so, i build the graph:
$DEF[0]="DEF:used=$RRDPATH/system/memory.rrd:used:AVERAGE";
$DEF[1]="DEF:cached=$RRDPATH/system/memory.rrd:cached:AVERAGE";
$DEF[2]="DEF:buffer=$RRDPATH/system/memory.rrd:buffer:AVERAGE";
$DEF[3]="DEF:shared=$RRDPATH/system/memory.rrd:shared:AVERAGE";
$DEF[4]="DEF:free=$RRDPATH/system/memory.rrd:free:AVERAGE";
RRDs::graph($GRAPHPATH."/system/memory.png",
                 "--title=Uso de Memoria",
                 "--imgformat=PNG",
                 "--vertical-label=Mb",
                 "--width=450",
                 "--height=150",
                 "--upper-limit=$MEMSIZE",
                 "--lower-limit=0",
                 "--rigid",
                 "--color=MGRID#80C080",
                 "--color=GRID#808020",
                 "--color=FRAME#808080",
                 "--color=ARROW#808020",
                 "--color=SHADEA#404040",
                 "--color=SHADEB#404040",
                 @DEF,
                 "AREA:used#FF0000:Usada",
                 "AREA:cached#0000FF:Cache",
                 "AREA:buffer#00FF00:Buffer",
                 "AREA:shared#00FFFF:Compartilhada",
                 "AREA:free#FFFF00:Livre",
                 "COMMENT:\\n",
                 "COMMENT:\\n",
                 "GPRINT:used:MAX:Maximo   \\: %.2lf",
                 "GPRINT:used:AVERAGE:Media   \\: %.2lf",
                 "GPRINT:used:MIN:Minimo   \\: %.2lf",
                 "GPRINT:used:LAST:Ultimo   \\: %.2lf",
                 "GPRINT:cached:MAX:Maximo   \\: %.2lf",
                 "GPRINT:cached:AVERAGE:Media   \\: %.2lf",
                 "GPRINT:cached:MIN:Minimo   \\: %.2lf",
                 "GPRINT:cached:LAST:Ultimo   \\: %.2lf");

but my graph be clear, (i attach my graph to the message).
somebody know why this happen?

tks



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