Embedded C++ : to use STL or not?

Question

I have always been an embedded software engineer, but usually at Layer 3 or 2 of the OSI stack. I am not really a hardware guy. I have generally always done telecoms product

Answer 1

In addition to all comments, I would propose you reading of Technical Report on C++ Performance which specifically addresses topics that you are interested in: using C++ in embedded (including hard real-time systems); how exception-handling usually implemented and which overhead it has; free store allocation's overhead.

The report is really good as is debunks many popular tails about C++ performance.