Re: [opennms-discuss] How to change jrobin/rrdtool

[Jerome C. <jca...@to...>]

>> Is there any advantage to using JRB over RRD or vice-versa?

I don't think this was answered.  Does anyone have input?

Thanks,
Jerome


________________________________________
From: Klaus Steden [kl...@mo...]
Sent: Wednesday, November 14, 2012 1:47 PM
To: General OpenNMS Discussion
Subject: Re: [opennms-discuss] How to change jrobin/rrdtool

Is there any advantage to using JRB over RRD or vice-versa?

I've hand-rolled some things that collect data using rrdtool, but to get the information presentable in OpenNMS requires an annoying conversion step that takes a long time, especially for collections with a lot of RRD files. I've got one script that gathers 500+ data sources into RRDs and converting to JRBs takes nearly 15 minutes, so I've had to decouple the data collection and data conversion steps. If I could use RRD natively, that eliminates the overhead of converting ...

If I were to switch up my config now, would OpenNMS still be able to graph older JRB files when displaying, or would I have to convert everything en masse beforehand?

thanks,
Klaus

________________________________________
From: Les Mikesell [les...@gm...]
Sent: Wednesday, November 14, 2012 10:09 AM
To: General OpenNMS Discussion
Subject: Re: [opennms-discuss] How to change jrobin/rrdtool

On Wed, Nov 14, 2012 at 11:46 AM, Roskens, Ronald
<Ron...@bi...> wrote:
> You could handle it inside the jrobin java calls, or after the xml dumps. From a java perspective, all you really need to get the xml is:
>         RrdDb rrd = new RrdDb(<filename>);
>         rrd.dumpXml(<xmlfilename>);
>         rrd.close();

But once you have this, can rrdtool merge the data from a
one-element-per-file jrb into a storebygroup layout?  And do it
without overwriting existing data collected natively as rrd?   I have
an old system collecting the jrb's and a new one with rrd's and would
backfill a few graphs if there is a way to automate it.

--
   Les Mikesell
     les...@gm...

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