[rrd-users] Re: problems summing many sources together
georges at norm.lu
Fri Jun 9 00:20:59 MEST 2006
> > (...)
> This creates 44 extra arrays containing ranges.
> > CDEF:intot=in1,UN,0,in1,IF,in1,UN,0,in1,IF,in2,UN,0,in2,IF,in3,UN,0,in3,I
> > (....)
> This creates two extra arrays containing ranges.
Ah right, ok
> If your system is low on memory and will have to use swap space, I bet
> the first mentioned way will be much slower.
> On the other hand, if you hit a limit in your operating system, where
> lines become too long, you may have to do your adding in at least a
> couple of steps.
The system I'm doing the graphing on has surely enough ram to handle those 44
arrays and more.
I guess I would rather hit the maximum line-length limit.
> > Also, is there no more efficient solution for doing this ?
> How much is 1 plus 2 plus unknown plus 4 plus 5 ?
> There is only one answer: unknown.
Right. I just assumed that rrd would automatically translate unknown to 0 in
Or that there was a global option to tell it so...
Anyway, thanks for your help and clear explanations !
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