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