[rrd-users] Problem with rrdtool graph PRINT statement

[Olly Butterfield]

Hi

I'm currently trying to produce some textual output from an rrdfile, to 
show essentially the average transfer rate (in bits/sec) of a network 
interface. This is to be integrated into a php script. Here is what I'm 
running:

/usr/bin/rrdtool graph -
--start=1117580400
--end=1117904400
DEF:crin="cr1_traffic_in_48.rrd":traffic_in:AVERAGE 
DEF:crout="cr1_traffic_in_48.rrd":traffic_out:AVERAGE
CDEF:cdefin=crin,8,*
CDEF:cdefout=crout,8,*
PRINT:cdefin:AVERAGE:"Average\:%8.2lf%s"
PRINT:cdefout:AVERAGE:"Average\:%8.2lf%s"

(reproduced here on separate lines for clarity)

The php script I'm using gets the timestamp for the start of the month 
and for the the end point that i want to use. What I would expect to 
happen is that 2 values are printed to the standard out, but nothing 
seems no be happening - no errors and no output. I've tried rrdtool 
fetch but for what I want to do, it's very very messy.

Thanks in advance


Olly B

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