Re: [Boost-users] Boost Python is slow?

Subject: Re: [Boost-users] Boost Python is slow?
From: Tyomich on the AIR (cadchrk_at_[hidden])
Date: 2009-07-13 00:34:31

> Boost.Python is a little slower than wrapping directly using Python C-API, 
> especially in very simple cases like yours. (It is a variant of the 
> abstraction penalty.) However, it is hard to believe that it is 4x slower. 
> Would you mind posting complete compilable examples so that we can take a look 
> at it?
> Regards,
> Ravi

Sure! Here they are: http://www.filefactory.com/file/ahda0d8/n/_export_Boost_vs_pure_Python_7z
I tried to get/set and increase the member of a struct and here are my results:

Getting boost.python point 1000000 times:
0.30395876051
Getting Python point 1000000 times:
0.096010029312

Setting boost.python point 1000000 times:
0.373980616451
Setting Python point 1000000 times:
0.109051436823

Increasing boost.python point 1000000 times:
0.708493801882
Increasing Python point 1000000 times:
0.20538183019

The numbers are time in seconds taken to accomplish calculations. As you can see, Boost.Python is apparently 3-4 times slower than its equivalent in pure Python.