http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59439
--- Comment #3 from Ben Maurer <ben.maurer at gmail dot com> --- Created attachment 31405 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31405&action=edit Benchmark _build/opt/experimental/bmaurer/benchmark snprintf 1 threads took 20 ms 2 threads took 20 ms 3 threads took 20 ms 4 threads took 20 ms 5 threads took 22 ms .. 31 threads took 43 ms iostream 1 threads took 108 ms 2 threads took 219 ms 3 threads took 371 ms 4 threads took 451 ms 5 threads took 559 ms 6 threads took 655 ms 7 threads took 763 ms 8 threads took 908 ms 9 threads took 1015 ms ... 31 threads took 3176 ms