[rrd-users] Re: GAUGE graphs (router memory)

[Chris Marlow]

You need to give it a time frame to graph - As an example, use the -start
-86400 to graph the past 24 hours..  Just like when you use rrdtool fetch.

-Chris

-----
Christopher S. Marlow
AIX Infrastructure / 24x7 Security
Burlington, VT
Phone: 802-769-3253
Tie line: 446-3253
e-mail: marlowc at us.ibm.com


Oliver Cook <ollie at uk.clara.net>@mutare.noc.clara.net> on 02/15/2001
09:02:02 AM

Sent by:  Ollie Cook <ollie at mutare.noc.clara.net>


To:   rrd-users at list.ee.ethz.ch
cc:
Subject:  [rrd-users] GAUGE graphs (router memory)




Hi,

I am having a little trouble with rrdtool 1.0.28. I am trying to graph the
memory usage in some of our routers, and having successfully setup traffic
monitoring, thought this would not be a problem.

I setup the RRD as follows:

/usr/local/rrdtool/bin/rrdtool create ../rrd/temperature.rrd --step 300
DS:inlet
:GAUGE:600:U:U DS:outlet:GAUGE:600:U:U RRA:AVERAGE:0.5:1:1200
RRA:MIN:0.5:12:240
0 RRA:MAX:0.5:12:2400 RRA:AVERAGE:0.5:12:2400

And can verify that data is going into this RRD (via a perl script):

/usr/local/rrdtool/bin/rrdtool fetch ../rrd/temperature.rrd AVERAGE -s
-3000
                    inlet        outlet

 982242300: 1.8000000000e+01 2.5000000000e+01
 982242600: 1.8000000000e+01 2.5000000000e+01
 982242900: 1.8000000000e+01 2.5000000000e+01
 982243200: 1.8000000000e+01 2.4006666667e+01
 982243500: 1.8000000000e+01 2.4993333333e+01
 982243800: 1.8000000000e+01 2.5000000000e+01
 982244100: 1.8000000000e+01 2.5000000000e+01
 982244400: 1.8000000000e+01 2.5000000000e+01
 982244700: 1.8000000000e+01 2.5000000000e+01
 982245000: 1.8000000000e+01 2.5000000000e+01
 982245300: 1.8000000000e+01 2.5000000000e+01
 982245600: NaN NaN

However, when I try to generate a graph of these data:

/usr/local/rrdtool/bin/rrdtool graph ../temP-day.gif -t "Temperature"
DEF:inlet=../rrd/temperature.rrd:inlet:AVERAGE DEF:exhaust
=../rrd/temperature.rrd:outlet:AVERAGE AREA:inlet:#00FF00:"Inlet"
LINE1:exhaust:#0000FF:"Exhaust"

All that it generates is a blank graph. The axes are there with the correct
values (in this case, bottom=10, top=25). However, there are no lines or
areas, nor a legend.

Any help would be most gratefully received,

Cheers,

Ollie

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