d-bus vs other interprocess communication system

[Adriano Pallavicino]

Hi, i am Adriano ad i come from Italy. I have a question about d-bus and how 
many resources utilize. Of course is the best way to share data to and from 
processes, less code to write, so less possibility to introduce a bug. But, 
how many resources cost it? If i have an arm11 500MHz with 64Mb of ddr ram 
there isn't a problem, but if i have a small system with small ram? Is better 
to use a shared/mapped memory? where is the border line that can help me in 
the choice of one system or another? Thank you very much

Adriano