[Nagiosplug-devel] Re: Nagiosplug-devel digest, Vol 1 #707 - 4 msgs

[Andreas Ericsson]

Thomas M. Payerle wrote:
>>However, performance data from a few plugins is required to respect
>>floating point numbers.   Can I suggest this function is changed to
>>accept real numbers and not integers?
> 
> A possible caveat: I believe rrdtool round robin databases only accept
> integral values, at least I ran into that when playing with this on a
> couple of my systems.  Although I have not thoroughly confirmed this, and
> was not running the latest and greatest version of rrdtool, and I suspect
> it might not be a major change to rrdtool to fix (I believe it must store
> floating point due to its interpolation algorithms, but the tools appear
> only look at integral part of the arguments).

It is trivial to convert floating point data to integer data, just as it 
is trivial to store an 8 character string in a long long. I believe this 
code can be left to the performance data parser in case rrdtool truly 
lacks this functionality.

>  I was meaning to contact
> the rrdtool developer after looking into it more thoroughly, but have been
> swamped of late; for my needs I just had plugin report as a percentage.
> 
> None of the above directly impacts the Nagios performance data question,
> but as I suspect one of the most common uses of performance data is to
> populate rrdtool databases, I thought I would alert you to the potential
> issue.
> 

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer