Re: [boost] Performance test of shared_ptr, ptr_vector, cow_ptr, and copy_ptr

"David Maisonave" <dmaisonave@commvault.com> wrote:

In fact, even the copy_ptr was twice as fast as the boost::shared_ptr and cow_ptr in populating the container.

It seems reference counting has a much bigger impact on performance than I had anticipated.

It might not be the reference counting itself but more the fact that shared_ptr needs to allocate the counter object using "new" for every created object. Using intrusive_ptr instead would avoid this issue. It might also make a difference if you have BOOST_SP_USE_QUICK_ALLOCATOR defined. -- Catalin