Why does curve is not compatible to legend value?

[joe_hznm]

Hi,


I use cacti to monitor 130Gbps bandwidth. By adding up all link bandwidth value, we got total bandwidth inbound and outbound.

But, we noticed that the curve on summary graph does NOT conform to maximum value shown below it. Wh?


Joe

[BSOD2600]

Post the rrdtool graph debug output (click the little wrench icon).

[joe_hznm]

RRDTool Command:

/usr/local/rrdtool-1.2.12/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Outbound Traffic Bandwidth Summary" \
--base=1000 \
--height=120 \
--width=580 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="" \
--slope-mode \
DEF:a="/home/apache/htdocs/netmon/rra/testinghighspeed_traffic_in_124.rrd":traffic_out:AVERAGE \
DEF:b="/home/apache/htdocs/netmon/rra/testinghighspeed_traffic_in_126.rrd":traffic_out:AVERAGE \
DEF:c="/home/apache/htdocs/netmon/rra/testinghighspeed_traffic_in_127.rrd":traffic_out:AVERAGE \
DEF:d="/home/apache/htdocs/netmon/rra/testinghighspeed_traffic_in_128.rrd":traffic_out:AVERAGE \
DEF:e="/home/apache/htdocs/netmon/rra/testinghighspeed_traffic_in_130.rrd":traffic_out:AVERAGE \
DEF:f="/home/apache/htdocs/netmon/rra/testinghighspeed_traffic_in_129.rrd":traffic_out:AVERAGE \
DEF:g="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_131.rrd":traffic_out:AVERAGE \
DEF:h="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_135.rrd":traffic_out:AVERAGE \
DEF:i="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_134.rrd":traffic_out:AVERAGE \
DEF:j="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_136.rrd":traffic_out:AVERAGE \
DEF:ba="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_133.rrd":traffic_out:AVERAGE \
DEF:bb="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_258.rrd":traffic_out:AVERAGE \
DEF:bc="/home/apache/htdocs/netmon/rra/chinanetzjegresswz_traffic_in_132.rrd":traffic_out:AVERAGE \
CDEF:cdefa=a,8,* \
CDEF:cdefb=b,8,* \
CDEF:cdefc=c,8,* \
CDEF:cdefd=d,8,* \
CDEF:cdefe=e,8,* \
CDEF:cdeff=f,8,* \
CDEF:cdefg=g,8,* \
CDEF:cdefh=h,8,* \
CDEF:cdefi=i,8,* \
CDEF:cdefj=j,8,* \
CDEF:cdefba=ba,8,* \
CDEF:cdefbc=bc,8,* \
CDEF:cdefbd=TIME,1142219551,GT,a,a,UN,0,a,IF,IF,TIME,1142219551,GT,b,b,UN,0,b,IF,IF,TIME,1142219551,GT,c,c,UN,0,c,IF,IF,TIME,1142219551,GT,d,d,UN,0,d,IF,IF,TIME,1142219551,GT,e,e,UN,0,e,IF,IF,TIME,1142219551,GT,f,f,UN,0,f,IF,IF,TIME,1142219551,GT,g,g,UN,0,g,IF,IF,TIME,1142219551,GT,h,h,UN,0,h,IF,IF,TIME,1142219551,GT,i,i,UN,0,i,IF,IF,TIME,1142219551,GT,j,j,UN,0,j,IF,IF,TIME,1142219551,GT,ba,ba,UN,0,ba,IF,IF,TIME,1142219551,GT,bb,bb,UN,0,bb,IF,IF,TIME,1142219551,GT,bc,bc,UN,0,bc,IF,IF,+,+,+,+,+,+,+,+,+,+,+,+,8,* \
AREA:cdefa#FF0000:"" \
AREA:cdefb#FF0000:"":STACK \
AREA:cdefc#FF0000:"":STACK \
AREA:cdefd#FF0000:"":STACK \
AREA:cdefe#FF0000:"":STACK \
AREA:cdeff#FF0000:"":STACK \
AREA:cdefg#FF0000:"":STACK \
AREA:cdefh#FF0000:"":STACK \
AREA:cdefi#FF0000:"":STACK \
AREA:cdefj#FF0000:"":STACK \
AREA:cdefba#FF0000:"":STACK \
AREA:bb#FF0000:"":STACK \
AREA:cdefbc#FF0000:"Total Traffic\:\n":STACK \
GPRINT:cdefbd:LAST:"Current\:%8.2lf %s" \
GPRINT:cdefbd:AVERAGE:"Average\:%8.2lf %s" \
GPRINT:cdefbd:MAX:"Maximum\:%8.2lf %s" \
GPRINT:cdefbd:MIN:"Minimum\:%8.2lf %s\n" \
COMMENT:"Available Bandwidth\: 130Gbps Mon 13 Mar 11\:15\:01 CST 2006 \n"
RRDTool Says:

OK

[gandalf]

Please try changing the Base Value from 1000 to 1024 and check, whether the numbers fit
Reinhard

[joe_hznm]

No. It does not help.

[nugai]

joe_hznm: Is your issue that the vertical axis shows a range of 100 G only?

If so, there is no problem because rrdtool adjusts the values according to the Max value in the file (i.e. if you select a time range of 07:00 - 08:00 on 12-Mar-06, you'll probably see the vertical axis labeled as 40 G only).