[rrd-users] Storing RRD data and HDD I/O

Andy Riebs andy.riebs at hp.com
Tue Apr 8 18:15:44 CEST 2008

Hi Ilja,

There are 2 ways to interpret your query, so I'll answer them both:

1. No, there is no difference between storing the single datum "0" or "100"
2. Depending on your OS, file system, disk drive and controller, and rrd 
layout, it is possible that storing many data will generate more disk 
I/O than storing a single datum.


Ilja Bobkevič wrote:
> Hello,
> It could be a stupid question and I'm sorry if it is.
> Does someone know when rrd file is updated is there any dependencies
> between hdd I/O and value stored? In other words, is there any
> difference between storing 0 or 100 to rrd file concerning hdd I/O use?
> Thanks.
> Regards,
> Ilja.
> _______________________________________________
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> rrd-users at lists.oetiker.ch
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Andy Riebs,  HP High Performance Computing Linux R&D
             Technology for better business outcomes
Linux Software,      <http://www.hp.com/go/clusters>
Catalyst Program,   <http://www.hp.com/go/catalysts>
My opinions are not necessarily those of HP
(w) +1.603.884.1521, andy.riebs at hp.com
(h) andy at candooz.com              (Data are not is.)

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