[rrd-users] Start time with rrdtool create

Glenn MacGregor Glenn.MacGregor at sonos.com
Fri Jul 6 21:25:59 CEST 2007

Sorry for the multiple posts but I am stuck in a hole here.

I have hundreds of archived XML files which contain data that I would
like to put into rrd files. I process the files looking for the oldest
timestamp, I then create an rrd file using that time (unix time). I
start adding to this file using update, but nothing gets added. I assume
this is due to the rra/rrd not have my specified starting time. Is there
anyway to use rrd for this type of application?



-----Original Message-----
From: rrd-users-bounces at lists.oetiker.ch
[mailto:rrd-users-bounces at lists.oetiker.ch] On Behalf Of Glenn MacGregor
Sent: Friday, July 06, 2007 3:16 PM
To: Tobias Oetiker
Cc: rrd-users at lists.oetiker.ch
Subject: Re: [rrd-users] Start time with rrdtool create

Let me add to my last post.

rrdtool create test.rrd --step 300 --start 1182758400
DS:sr:GAUGE:600:U:U RRA:AVERAGE:0.5:1:1200
rrdtool dump test.rrd > test.xml

You will notice the last entry in the only rra is the start time. This
is not what I would expect.



-----Original Message-----
From: Tobias Oetiker [mailto:tobi at oetiker.ch]
Sent: Friday, July 06, 2007 11:22 AM
To: Glenn MacGregor
Cc: rrd-users at lists.oetiker.ch
Subject: Re: [rrd-users] Start time with rrdtool create


use rrdtool info or rrdtool dump to see what is in the rrd file ...
rrdxport is for reports ...


Today Glenn MacGregor wrote:

> Hi All,
> I am using rrdtool 1.2.23 trying to create a rrd file starting 1 month

> ago.
> rrdtool create test.rrd --step 300 --start 1180670400 
> DS:param:GAUGE:600:U:U RRA:AVERAGE:0.5:1:1200 RRA:AVERAGE:0.5:6:336
> RRA:AVERAGE:0.5:24:372 RRA:AVERAGE:0.5:144:730
> output from rrdtool xport:
> <start>1183646700</start>
> <step>300</step>
> <end>1183733100</end>
> As you can see the start time is quite a bit different than the start 
> time I input. Is there a reason for this discrepancy?
> Thanks
>  Glenn

Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
http://it.oetiker.ch tobi at oetiker.ch ++41 62 213 9902

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