>From http://kam.mff.cuni.cz/~ondra/benchmark_string/ >> Currently we compare following variants >> glibc - glibc-2.13 version You should compare with glibc master branch instead of 2.13. Some changes were done after 2.13 release (regarding with strlen, memchr, strnlen, and some other routines). -- Liubov Dmitrieva Intel Corporation