CDEF: disk used space instead of free (informant)

[mrh]

hi guys!
do you think this CDEF expression is right? My graph shows a broken image (nothing): cdef=CURRENT_GRAPH_MAXIMUM_VALUE,-,CURRENT_DATA_SOURCE

THANKS!
mrh

[rony]

Cdef should be:

Code: Select all

cdef=CURRENT_GRAPH_MAXIMUM_VALUE,CURRENT_DATA_SOURCE,-

As for the variable replacment, I haven't done it, so I don't know if it will work. But your cdef rpn (Reverse Polish Notation) is incorrect.

[mrh]

now it's showing some data, but not what I'm trying to fetch. I'll explain: I'd like to do: upper limit of the graph - free mem. This should give me the used mem...

Thank you Tony

[mrh]

Thank you Tony, you're right and the CDEF worked!