[Boost-users] speed comparison between raw ptr and smart_ptrs

Does anyone have a url for a speed comparison between raw ptr and the boost smart_ptrs? e.g. ptr->someValue / ptr->someFunction() raw someValue scoped_ptr someBiggerValue shared_ptr someBiggerValue I am pretty certain I have seen this data before, but I can't find it anywhere and google is not turning up anything (or I am using wrong search terms). thanks ~msew