[Bug libstdc++/54075] [4.7.1] unordered_map insert 3x slower than 4.6.2

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54075



--- Comment #27 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-22 
21:05:41 UTC ---

I can only recommend profiling (by gprof or other means).