Re: [Boost-users] boost::function performance issues with C++11

On 4 Jul 2014 at 5:10, wrote:

However, I found that it's quite slow when compiled with -std=c++11. In detail, it takes 173874 milliseconds with C++11, while it takes 3676 seconds without C++11.

About 50 times slower!! How can that be? [snip] In case you need to know my enviorment, my OS is Arch, compiler is gcc 4.9.0, and optimizations are default. The execution time (ms) of three versions I tried: boost::function with C++11 : 173874 boost::function without C++11 : 3676 std::function in C++11 : 29233

Any thoughts are appreciated!

I'd check C++ 11 mode on GCC 4.6. It could be as simple as an outdated GCC version switch. Niall -- ned Productions Limited Consulting http://www.nedproductions.biz/ http://ie.linkedin.com/in/nialldouglas/