[rrd-users] creating targets based on math equations

[PAUL WILLIAMSON]

>>> "Nabil BouDiab" <mr_bou at yahoo.com> 03/08/07 9:03 AM >>>
> Hello, 
> 
> I am trying to monitor using MRTG total memory and used memory .. 
> however we only have OIDs for used and free memory. 
> 
snip
> 
> this will eventually give us total memory as IN and 2x used memory as
OUT 
> 
> any ideas ?? 
> 
> Thanks 
> Nabil

Create an external script and do the math there, feeding 
MRTG/RRDTool with the appropriate values.

Paul