[rrd-users] PRINT question

Robert Hagens rhagens at envysion.com
Thu Apr 23 01:42:25 CEST 2009

I am new to RRD, but have spent about 12 hours struggling with this, so
I hope someone can help. 


I am creating an rrd

/usr/bin/rrdtool create /tmp/ea.rrd --start 1240207200 --step 7200
DS:ds:GAUGE:43200:0:100 RRA:LAST:0.5:1:100


And loading some data into it (I realize the values are all one)

/usr/bin/rrdtool update /tmp/ea.rrd 1240246749:1 1240252503:1
1240259704:1 1240266904:1 1240274104:1 1240281305:1 1240288503:1
1240295704:1 1240302903:1 1240310104:1 1240317304:1 1240324504:1
1240331703:1 1240338903:1 1240346103:1 1240353304:1 1240360503:1
1240367704:1 1240374903:1 1240382104:1 1240389304:1 1240396503:1
1240403704:1 1240410904:1 

Now, I just want to print the data out. I try


/usr/bin/rrdtool graph /tmp/ea.rrd --start 20090420
'DEF:ds0=/tmp/ea.rrd:ds:LAST' 'PRINT:ds0:LAST:%2.2lf'


And get





I was expecting to get a list of values?

On a related note, these values represent time points where a device is
on-line (hence one; if it was off line, the value would be zero). I
would like to compute availability by computing every 24 hours the
number of points that are 1 over the total number (which should be 12).
Any suggestions on how to do that? 


Thanks in advance,





Robert Hagens | Chief Technical Officer| Envysion, Inc. 

950 Spruce Street | Louisville, CO 80027

303.590.2365 office | 303.590.2351 fax

rhagens at envysion.com <mailto:rhagens at envysion.com>  | www.envysion.com
<http://www.envysion.com/>  | Visit our blog


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