[rrd-developers] Re: Feater Request: RPN operator => RRD

Mark Lawrence nomad at null.net
Wed Jun 21 09:41:58 MEST 2006

> you can do this in CDEF by testing for unknown and putting 0 or 1 then 
> you SUM the result to get the known vs unkonwn ration for the data you 
> look at ...

This doesn't work with consolidated data. Imagine 3 out of 5 data points 
with UNKN values and you are working with an RRA that has consolidated 
all five points - usually into a single UNKN value. You have "lost" the 
values of the two known data points.

>> 3. a new Function SUM like TREND but sums all values instead of building
>> an average.
>> My favorite would be the third one.

This would also be my preferred solution.

Mark Lawrence

Unsubscribe mailto:rrd-developers-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-developers-request at list.ee.ethz.ch?subject=help
Archive     http://lists.ee.ethz.ch/rrd-developers
WebAdmin    http://lists.ee.ethz.ch/lsg2.cgi

More information about the rrd-developers mailing list