[rrd-users] Re: RRA:MAX not acting like I thought when "multiple updates in a single step"

Jean-Francois Patenaude jf.patenaude at bell.ca
Mon Aug 11 15:45:45 MEST 2003

> You asked for 60 seconds per interval.  None of the 60-second intervals
> had a maximum rate of 50.

I thought the following line meant that, at some point, we had a value of
"50" somewhere in the 60 seconds interval.

	rrdtool update test.rrd 900000125:50

Hence, how come that value isn't reflected in the final result if I'm
asking for a "MAX".   I can see that some average is made throughout the
interval but I don't understand why it's acting like that.  A maximum is
a maximum.  I don't understand why the maximum is in fact the "maximum
of an average throughout an interval".

> Try the following:
> rrdtool create test.rrd --step 1 --start 900000000 DS:test:GAUGE:600:0:100 RRA:MAX:0.5:60:576

Yes, I already knew that this would work ... but it still doesn't answer
my first question.

On the other hand, this brings me a new question ...  if I already have
some graphs configured with "300 seconds" step, is it possible to convert
those in "1 second" step ?


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