Why do std::string operations perform poorly?

Question

I made a test to compare string operations in several languages for choosing a language for the server-side application. The results seemed normal until I finally tried C++,

Answer 1

For C++, try to use std::string for "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - in my implementation string::find(const charT* s, size_type pos = 0) const calculates length of string argument.