Re: [boost] [Block Pointer] benchmark

Subject: Re: [boost] [Block Pointer] benchmark
From: Phil Bouchard (philippe_at_[hidden])
Date: 2011-05-24 19:52:00

On 5/24/2011 4:07 PM, Nevin Liber wrote:
>
> Your claim is " It is a fast as the popular smart pointer *
> boost::shared_ptr<T>*".  Yet, in single-threaded code and shared_ptr using
> new instead of make_shared, block_ptr still takes 3.3x as long as
> shared_ptr.
>
> That is *a lot* of overhead...

I just tested it using make_shared & make_block and I get:
make:
auto_ptr:                   11109841 ns
shared_ptr:                 21215277 ns
block_ptr:                 143637475 ns

new:
auto_ptr                     4583447 ns
shared_ptr:                 10675000 ns
block_ptr:                  67152785 ns

FYI make_shared is slower than new because of the temporary it creates. 
  If people what speed they should stick to operator new in all cases.

-Phil