benchmark/index.js
function(callback) {
        block = "";
        for(var i = 0; i < opts.size; i++) block + ".";
        testAbility(callback);
    }
function(callback) {
        block = "";
        for(var i = 0; i < opts.size; i++) block + ".";
        testAbility(callback);
    }
function ( callback ) { block = "" ; for ( var i = 0 ; i < opts . size ; i ++ ) block + "." ; testAbility ( callback ) ; }
step 3.
start testing
step 3 . start testing