FW: [hobbit] FW: RRD data points - need help with graph distortion

["Wood, Mike" <Mike.Wood (at) kci1.com>]

Thanks to all who replied.

Mike Wood
UNIX System Administrator
Kinetic Concepts Inc.
5751 NW Parkway
San Antonio, TX, 78249


-----Original Message-----
From: Everett, Vernon [mailto:Vernon.Everett (at) woodside.com.au]
Sent: Monday, November 10, 2008 6:35 PM
To: hobbit (at) hswn.dk
Subject: RE: [hobbit] FW: RRD data points - need help with graph distortion

I also remember seeing an add-on which allowed you to dump your data points into a MySQL database.
This would allow you to maintain max granularity for as long as your disk space held out.
If I recall, there was no modification or recompilation of the code required. (But don't quote me on that)
Search the archive, and see what comes up.

Cheers
    Vernon

-----Original Message-----
From: Stef Coene [mailto:stef.coene (at) docum.org]
Sent: Tuesday, 11 November 2008 7:15 AM
To: hobbit (at) hswn.dk
Subject: Re: [hobbit] FW: RRD data points - need help with graph distortion

On Monday 10 November 2008, Wood, Mike wrote:
> Looks like my graphs didn't come through on the E-mail.  Trying
> different attachment type...
>
>
> From: Wood, Mike [mailto:Mike.Wood (at) kci1.com]
> Sent: Monday, November 10, 2008 9:06 AM
> To: hobbit (at) hswn.dk
> Subject: [hobbit] FW: RRD data points - need help with graph
> distortion
>
> Hi All,
>
> I asked this question last week, but maybe I wasn't clear enough as to
> what I was asking... - Management wants to avoid graph distortion on
> my 60 day CPU Util graph if possible.  I think that more datapoints
> would address the problem. The first graph looks good (30 day graph).
> The 2nd one distorts what is really going on (60 day graph - same
> server).  Is there any way to make the 2nd graph more granular?
> Thanks for looking! -
I have a perl script to update all the rrd files:

- it uses rrdtool resize <rrd file> GROW to add extra datapoints so the rrd has 5760 data points / rra (per default it has 756 data points)

- it adds also MAX and MIN rra's, this is more tricky because I export the rrd to xml, change the xml info and revert back to an rrd file.

Unfortunatly, I can not share this script.  But with use RRDs ; use File::Find (); you can get info about the file and find them ;)


Stef

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