id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
9637,Boost.Container vector::resize() performance issue,Dariush Forouher <dariush@…>,Ion Gaztañaga,"Hi,

I noticed that resize() on a boost vector is quite slow compared to the equivalent operation on a std::vector:

{{{
int size=2000000;

std::vector<char, std::allocator<char> > vec;
vec.resize(size); // ~500 us

boost::container::vector<char, std::allocator<char> > vec2;
vec2.resize(size); // ~3000 us
}}}

I've attached a test program, compiled with ""g++ -O3 -o test test.cpp""

Environment:
* gcc version 4.6.4 (Ubuntu/Linaro 4.6.4-1ubuntu1~12.04) 
* boost 1.55.0

(Side note: the performance is even worse when compiled with -O0).

cheers
Dariush",Bugs,closed,To Be Determined,container,Boost 1.55.0,Optimization,fixed,,