It looks like this:

MyType * pMy = my_segment->construct<MyType>(anonymous_instance)();

my_segment->destroy_ptr(pMy);

Where MyType is some typical struct and my_segment is correctly constructed boost::interprocess::managed_shared_memory * is around 10 times slower than the equivalent:

MyType * pMy = new MyType();

delete pMy;

I did not expect this. I though the two allocation algorithms should be similar in implementation and performance. Is there some good reason for such a huge difference.

Edit: The test was conducted over a huge number of iterations.