This scenario comprises the following FastFormat code, and functional equivalents for all other libraries examined:

    { for(unsigned i = 0; i < ITERATIONS; ++i)
    {
      std::string  forename  = "Professor";
      char         surname[] = "Yaffle";
      int          age       = 134;

      std::string  sink;

      fastformat::fmt(sink, "My name is {0} {1}; I am {2} years old; call me {0}"
                    , forename, surname, age);
    }}

This is the test/performance/performance.test.cvu.ex.1 performance test included in the FastFormat 0.2.1 beta 6 distribution.