[cricket-users] CDEF games

[Matt M. <mj...@un...>]

Is there some way to get Cricket to at least DEF all the datasources  
in the current RRD when making a call to 'rrdtool graph'?  Some of  
the data I need to graph is much more interesting when some  
computation is done that refers to other data collected for the same  
target (e.g., AdvFS filesystem use should be graphed taking all  
mountpoints in the domain into account), and if they were all DEF'd  
one could use 'scale=' to do the needed work fairly easily.

(It would be even cooler if I could declare my own DEFs to be added  
to the default as one could then refer to other RRDs as well, but  
this would be enough for now.)

I know I can use an external gatherer to compute the appropriate  
numbers at collection time and just store those, but it'd be more  
useful to collect the raw numbers and then compute from them.  A bit  
of time with google shows that someone did hack Cricket to do this at  
some point, but it was quite a while ago and whatever happened it  
isn't documented as being in 1.0.5.

Matt

-- 
Matt McLeod
Systems Programmer
Information Infrastructure
The University of Melbourne