Patch de desempenho Ruby.

$ rvm use ruby-1.9.3-p194
$ time rails s thin

real
0m12.019s
user
0m10.098s
sys
0m1.001s


$ rvm
use ruby-1.9.3-p286-falcon
$ time rails s thin

real
0m5.490s
user
0m3.758s
sys
0m0.841s

$ rvm
use ruby-1.9.3-p286-falcon --default