[boost] [Block Pointer] benchmark

Hi, Just for the records I have benchmarked block_ptr using: https://svn.boost.org/svn/boost/sandbox/block_ptr/libs/smart_ptr/example/ben... And I get the following: auto_ptr: 9208870 ns shared_ptr: 22958516 ns block_ptr: 75860365 ns Which is pretty good given the complexity it goes thru. I was wondering if there is any hope in having a pool::ordered_malloc() call of O(1) instead of O(n) and a faster pool::is_from()? The latter could be just a check to see if a pointer is within reserved memory pages of the pool. I tried to talk to the author of pool but I got no response. Thanks, -Phil