[rrd-users] rpn expressions without DEF or CDEF variables are not supported

[Yee-Ting Li]

Hi,

i'm trying to do some complex-ish calculations on rrd data, basically  
i wish to sum up the totals of two sources such that:

DEF:grid=service_grid_src.rrd:in_bytes:AVERAGE
DEF:bulk=service_bulk_src.rrd:in_bytes:AVERAGE
CDEF:bits=grid,8,*
CDEF:total=grid,bulk,+
VDEF:gridTotal=grid,TOTAL
VDEF:bulkTotal=bulk,TOTAL
CDEF:sumTotal=gridTotal,bulkTotal,+
LINE1:bits#ff0000:bits
PRINT:total:AVERAGE:%.3lf%sbytes
PRINT:gridTotal:%.6lf
PRINT:bulkTotal:%.6lf
PRINT:sumTotal:%6lf%sTOTAL

however, it complains that:

rpn expressions without DEF or CDEF variables are not supported

i have two questions:

- are there any plains to support this in the future?

- is there another way i can get the value of sumTotal to be printed  
out?


thanks,

Yee.

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